Renewable energy Meriliin Lend Estonian University of Life Sciences Tartu 2013 Topics Renewable energy Solar energy Wind energy Hydroelectric power Geothermal energy Biomass energy Renewable energy Renewable energy comes from sources that naturally renew, or will not run out in our lifetimes. Includes sunlight, wind, water, geothermal heat and various forms of biomass. Renewable energy cannot be exhausted and is constantly renewed. Does not harm the environment. Saves money. Solar energy Solar energy is the technology used to harness the sun's energy and make it useable. Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. Solar energy use has surged at about 20 percent a year over the past 15 years, thanks to rapidly falling prices and gains in efficiency. Solar energy is inexhaustible. Noise free. Does not harm the environmen...
Name at least 3 renewable energy sources. What consequence might there be if we use non-renewable energy too much? Which energy technology is the world's fastest growing? With what name is renewable energy also known as? Light Heat Electricity Generated from natural resources. Doesn't harm the environment. Can't be replenished Most of our energy. May cause global warming. Wind energy is the fastest growing. Most renewable energy comes from the sun. Hydroelectric energy is the oldest and largest source. Renewable energy a.k.a "green" energy. Thank you for listening! We use energy every day. It surrounds us in different forms, such as light, heat, and electricity. Our bodies use the energy stored in molecules of substances like carbohydrates and protein to move, breathe, grow, and think. We also use energy to do work and to play. Humans have invented thousa...
Environment and renewable energy 1. How can we help bring about a change in behavior? * Renewable energy is the sun and the water that people use, but not yet so widely. Required on all homes, various stations, hypermarkets solar panels to use the potential energy, the stock of which is not completed within 5 billion years. * Renewable sources such as wind and solar are intrinsically unsuited to meeting the demand for continuous, reliable supply on a large scale – which comprises most demand in developed countries. The criteria for any acceptable energy supply will continue to be cost, safety, and security of supply, as well as environmental considerations. 2. How can we encourage sustainable development? * To encourage you in the following way. To allocate money for the construction of such stations to States that are unable to pay for expensive power plants. Permanent sponsorshi...
ELEKTROENERGEETIKA INSTITUUT Referaat Taastvad Energiaallikad Esitamise tähtaeg 14.04.2009 Õppejõud: Hannes Agabus Tudeng: Sergei Belosapko Nikita Naumov Tallinn 2009 Contents: 1. Renewable energy 1.1. Costs................................................................................................................... 2 1.2. Potential future utilization..............................................................................4 1.3. Why Don't We Use More Renewable Energy? ...........................................5 2. Energy Types 2.1. Wind Energy.......................................................................................................6 2.1.1. Annual Generation........................................................................................7 2.1.2. ...
Natural resources-our treasure Natural resources are land or raw materials like minerals, fluids, gases, organic matters and also woods, groundwater, animals and so on, in other words it's everything that human hasn't created. These resources are also used in industry. We get natural resources from the environment. Many of them are essential for our survival while others are used for satisfying our wants. Renewable resources: Some natural resources can be reproduced within a few years or decades. These are called renewable resources. Solar radiation, wind and hydroelectricity, are perpetual resources that are in no danger of a lack of long-term availability. Some natural renewable resources such as geothermal power, fresh water, timber, and biomass must be carefully managed to avoid exceeding the worlds capability to displace them. Solar energy is the energy derived directly from the Sun...
Green Energy Program paid for and brought to by -Anja Bananja -Franz the Manz - And Just Chadrick Overview- What is Green Energy? Different Types? What is sustainability? German Green Energy Cost and Efficiency Recycling What is Green Energy? -It is energy resources that are renewable -Can be naturally replenished -Clean, Safe and not harmful to the environment (aka mother earth) Types of Green Energy Green Energy going cute Solar Power · Is produced by using photovoltaic cells, which capture sunlight and turns that into energy. Problems ? -The sun has got to shine -The cost of solar panels and the systems range between $20k-40k -The light from the sun produces a very small amount of energy Wind Power -These giant pinwheels spin from strong winds which spins ...
Hello My name is JOHN SMITH and I am here to talk about Hydroelectricity. Global energy use has risen by 70% since 1971 and continues to increase at the rate of 2% per year. There are many scenarios for future demand. One solution would be to use more hydropower. In 2005, renewable energy represented one-fifth of total power generation. Hydropower is the most advanced of the renewable and represents 87% of this production. 160 countries all over the world are using hydropower. Five countries make up more than half of the world's hydropower production. Those countries are: Brazil,Canada, China, Russia and the USA. (Production) *Most of the energy comes from the potential energy of dammed water driving a water turbine and generator. In this case the energy extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. *Pumped storage hydroelectricity produces electricity to supp...
Water creates energy Eduard Kamenski 11a form The world uses energy from many different sources, such as: hydroelectric power, nuclear power plants, solar energy, and wind generated power. There are positive and negative aspects of each source, but which source of energy is best? My opinion is that the best source of energy is water and I'll bring up some facts why do I think so. Hydroelectric power is currently the world's largest renewable source of electricity. It accounts for six percent of the worldwide energy supply or about fifteen percent of the world's electricity. Water has been found to be a major source of energy. Water power is utilized at present mainly as hydro-electricity. It is produced from moving water and from falls with the help of turbines and dynamos. Hydro-electricity has acquired great significance as a source of energy in the country in the present times and is being put to different uses. The following are the...
SISUKORD ENERGY STORY................................................................................................................4 USES OF ENERGY............................................................................................................. 4 2.1 Uses of energy in homes...............................................................................................5 2.2 Types of energy used in homes.................................................................................... 6 2.3 Energy use in different types of homes........................................................................ 6 2.4 Commercial Energy Use...............................................................................................9 2.5 Industrial and Manufacturing Energy Use..................................................................11 2.6 Transportation Energy Use.................................................
Sustainable city planning Sandra Erik 11L What is sustainable city planning? • A sustainable city, or also know as eco-city, is a city designed with consideration of environmental impact, inhabited by people dedicated to minimization of required inputs of energy, water and food, and waste output of heat, air pollution - CO2, methane, and water pollution. • It should meet the needs A sustainable city should be able to... • feed itself with minimal reliance on the surrounding countryside, and power itself with renewable sources of energy. • create the smallest possible ecological footprint • produce the lowest quantity of pollution possible • efficiently use land • compost used materials - Practical Achievement • Different agricultural systems - agricultural plots within the city – reduces distance. • Renewable energy sources - wind turbines, solar panels,...
Environmental problems today Nowadays we need to stand face to face against the environmental problems in spite of our everyday routine, that may affect the nature. Which are the most problematic environmental problems and how can we avoid them ? To start with, the biggest problem is global warming. The temperature is rising due to air pollution, which is caused by smoke from factories and of rising levels of CO2 . As a result, smog and soot causes health problems. Also, a big problem is deforestation. Due to the fact that it is causing destruction of the rainforest, it contaminates the water. To solve these problems, we certainly should use renewable sources of energy and we need to avoid dangerous gases. For example, we should switch off lights every time when we leave a room. Moreover, we should take public transport more often and stop using CFC's. We can solve environmental problems only if we follow certain rules. that it i...
FOREST BIOENERGY Outline Introduction: wood as a fuel Main body: diferent wood made energy products Conclusin: summarising the usage References Introduction • Fossil fuels: dominant source of energy. • Biomass accounts about 10% energy supply • Wood- based fuels from fast- growing species. • Forest biomass: reneweable energy • Forest biomass, mainly used in the Nordic countries. Wood based fuels sources •Energy forest •Forest biomass •Recycled wood Wood Biomass • Biologicalmaterial derived from living, or recently living organisms. • Can be used after converting it to various forms of biofuel. • Woodchips • Pellets Bioenergy • Energy produced from biomass. • Electricity, heat, and transportation fuels. • Eesti Energia and bioenergy. Benefits of Biomass • Environmental Benefits • Economic Benefits • Energy Benefits Biofuels • Solid fuels Pellets, briquettes • Liquid fuels Ethanol Bio-d...
SOLAR ENERGY Karol Pakkas What is solar power? Solar power is energy that comes from the sun. The sunlight gives off energy as heat. Solar power is a renewable source of energy. How does solar power work? Solar panels are used to collect sunlight. Solar panels are made up of photovoltaic cells that convert the sunlight into energy. Why do we need it? How does it lead to better health? Solar power is source of clean energy. It does not produce pollution or greenhouse gases or carbon compounds. Solar power would be a lot safer for the environment and a lot better for the health of people. What would happen if we don't use solar power? If we don't start using solar power, we would use oil and coal. They produce pollution and will cause millions of people to suffer from respiratory related problems. The oil and coal will run out and peopl...
SOLAR ENERGY Karol Pakkas What is solar power? Solar power is energy that comes from the sun. The sunlight gives off energy as heat. Solar power is a renewable source of energy. How does solar power work? Solar panels are used to collect sunlight. Solar panels are made up of photovoltaic cells that convert the sunlight into energy. Why do we need it? How does it lead to better health? Solar power is source of clean energy. It does not produce pollution or greenhouse gases or carbon compounds. Solar power would be a lot safer for the environment and a lot better for the health of people. What would happen if we don't use solar power? If we don't start using solar power, we would use oil and coal. They produce pollution and will cause millions of people to suffer from respiratory related problems. The oil and coal will run out and peopl...
GLOBAL WARMING Global warming is the observed century-scale rise in the average temperature of Earth's climate system. Since 1971, 90% of the increased energy has been stored in the oceans, mostly in the 0 to 700m region. Despite the oceans' dominant role in energy storage, the term "global warming" is also used to refer to increases in average temperature of the air and sea at Earth's surface. Since the early 20th century, the global air and sea surface temperature has increased about 0.8 °C (1.4 °F), with about two-thirds of the increase occurring since 1980.Each of the last three decades has been successively warmer at the Earth's surface than any preceding decade since 1850. More than 90% certain that most of global warming was being caused by increasing concentrations of greenhouse gases produced by human activities.In 2010 that finding was recognized by the national science academies of all majo...
Wind power is very old power source, sailing ships have been using wind power for at least 5,500 years. The first practical windmills were built in Afghanistan, from the 7th century to grind corn and draw up water. The first windmill for electricity production was built in Scotland in 1887 to power the lighting in the cottage, thus making it the first house in the world to have its electricity supplied by wind power. During the Second World War, small wind generators were to recharge submarine batteries. In the 1990s, wind power became more important, because fossil fuels pollute the atmosphere and humanity needed alternative fuels. That's because wind power is so necessary. Wind power is also renewable energy and it doesn't cause greenhouse gases. Building windmills is actually quite expensive and they need repairing or replacing about every 12-15 years. And strong winds can also break the wind turbines. Considering these thin...
EESTLASTE SUHTUMINE TAASTUVENERGIASSE Uurimistöö Koostaja: Klass: Juhendaja: 2009 Sisukord Sissejuhatus..........................................................................................................................................3 1. Taastuvenergia..................................................................................................................................5 1.1 Päike...........................................................................................................................................5 1.1.1 Päikeseenergia eelised:.......................................................................................................5 1.1.2 Passiivne päikeseenergia......................................................................................
“Green Illusions” The Dirty Secrets of Clean Energy and the Future of Environmentalism Ozzie Zehner Author Ozzie Zehner Visiting scholar at University of California, Berkeley Kettering University ( BS – Engineering ) The University of Amsterdam ( MS/Drs – Science and Technology Studies ) http://boa.czp-vecer.si/vecer2000/20131211/5023698_ Primarily researches social, cultural, political and economic .jpg conditions influencing energy policy priorities and project outcomes Introduction This book talks about the negative side effects of the alternative energy like wind turbines, solar cells and bio fuels. We don't have an energy crisis. We have a consumption crisis. And this book, offers refreshingly straight talk about what's wrong with the way we think and talk about the problem. Though we generally bel...
Manual For Biofuels Koostas: Margus Mäe Introduction This book told me a lot of practical uses of solid biofuels and peat compustion technologies in estonia and baltic sea countries. The hole technological chain from production to flue gas cleaning is brought to reader ´s. Also the energy policy and reguierment for users is shown. Properties of boifuels and peat In the boiler plants of Baltic Sea countries a wide range of various woodbased fuels are burned. To some extent also straw and other biomass based fuels are used. All these fuels are considered as renewables and according to the international agreement the CO2 emitted by the combustion of these fuels is not listed as a greenhouse gas. Wood, in particular the shell of wood cells, consists mainly from cellulose, lignin and hemicellulose. Due to the high carbon and hydrogen content, the lignin has higher calorific value than cellu...
The republic of Ireland Class 10 Road signs New signs are in kilometric scale , but some old signs are still in mile scale There are multilangual signs Forests Ireland has only about 8 % of his whole land covered with forests. Centuries ago people destroyed the forests Now there is mostly peat. Economy 25 % of europe computers come from ireland Ireland had a big economic boom in late 20'th century but now its back on top Ireland has the second highest per capita income of any country in the EU next to Luxembourg Construction plays big part in Irish economy The weather Irish think there is 4 kinds of weather Typical Irish weather is few minutes rain , few minutes sun then again rain and so on Energy About 98% of Ireland's final energy is produced by burning coal, petroleum, peat, or natural gas Ireland has lately ...
Solar power What is solar power? Solar power is the energy, which is derived from solar radiation energy. Mainy used to heat and power production, but as well as natural lighting. Solar power released as a result of fusion reactions taking place in the sun. What is solar power? Päikeseenergia on energia, mis on saadud päikesekiirguse energiast. Põhiliselt kasutatakse seda soojuse ja elektri tootmiseks aga ka loomulikus valgustuses. Päikeseenergia vabaneb päikesel toimuvate termotuumareaktsioonide tulemusel. Using heat production production of electricity from solar energy Kasutamine: Soojuse tootmiseks (sh. tarbevee ja joogivee kütmiseks) kasutatakse päikesekütteseadmeid. Elektri tootmine päikeseenergiast võib toimuda fotoelement- ehk fotogalvaanilises elektrijaamas päikesepatareidega või päikese-soojuselektrijaamades läbi soojuse. ...
How to produce bioenergy from agricultural resources without harming the environment Jürgen Aosaar Jaak-Albert Metsoja Ahto Oja BOVA cource on biogas from biomass March 3-7 2008 Tartu Deciduous tree species on abandoned agricultural land Current situation • The long term development plan of the Estonian energy industry foresees a reduction in the use of fossil fuels and an increase in the share of biofuels: by the year 2010 renewable energy must account for 5.1% of total energy consumption Current situation (2) • In Estonia we have abandoned arable land about 400 000 ha, part of it is overgrowing naturally, and another part has been afforested • For short-rotation forestry in Estonia, ecologically and economically the most suitable tree is probably grey alder, which is a highly productive and soil improving species Grey alder...
Simple and small ways affect the enviroment for the better Everyone can do something for the enviroment. All of us should do something, because enviroment is very important to people. Our planet is changing and we need to help it change for the better. One way how to help the enviroment is saving energy. You should switch off anything, that uses electricity. If you’re not using it, then turn it off, it’s simple. This goes for lights, televisions and so on. Also try unplugging if possible, because even when an appliance is turned off, it still may use power. You could switch your light bulbs to LED light bulbs, because these are using less energy and even last longer. If you use renewable energy sources, you won’t cause burning fossil fuels, that causes pollution. Another way how to help the enviroment would be saving water. Turn off the water, when you’re not using it. People often leave water running, when they’re br...
Architecture and cities in the future · The painting by Frank R. Paul · Cities made of steel, glass and plastic · Massive skyscrapers, roof-top aerodromes, wide pedestrian boulevards, metal roadways, urban space launch pads, noise regulations. · Cities must change radically to achieve long-term sustainability. · Energy, food and water sources, transportation systems and basic infrastructure, must all adapt to emerging pressures from climate change, dw...
New energy sources Rauno Hermann Scheer Energy law example for 47 countries 6.3% to over 20% Numerous awards including The Right Livelihood Award Renewable energy in world Investments 63 billion USD > 120 billion USD 20062009 Wind energy: 74 000 MW to 135 000 MW Solar energy: 5100 MW to 19 000 MW WHAT ARE THE ALTERNATIVES TO TODAYS SOLAR, WIND AND BIOMASS ENERGY SOURCES? Osmotic power How it works? Pressure created by osmosis powers turbines Where could be used Where fresh and salt water meet (creeks, fjords) Desalination plants Now Worlds first test factory in Norway Tofte (2009) Disadvantages Km2s of membranes needed Norway, Tofte Click to edit Master text styles Second level Third level Fourth level ...
Hydroelectricity Sander Vidder Kristo London Hydroelectricity Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy. History Hydropower has been used since ancient times to grind flour and perform other tasks. In the mid1770s, French engineer Bernard Forest de Bélidor published Architecture Hydraulique which described vertical and horizontalaxis hydraulic machines. Hydroelectric Dam Generating methods Conventional (dams) Pumpedstorage Runoftheriver Underground Advantages Economics CO2 emissions Other uses of the reservoir Disadvantages Ecosystem damage and loss of land Siltation Relocation Failure hazard Estonia hydroelectricity´s Kamari hüdroelektrijaam Tudulinna hüdroelektrijaam Linnamäe hüdroelektrijaam Largest The Three Gorges Dam is th...
15.04.2012 Report California Tabasalu Gymnasium 7.b class Vivian ruumet California is a state located on the West Coast of the United States. There are many famaous cities like Los Angeles, San Fransisco and many others. California neighbour states are Oregon to the north, Nevada and Arizona to the west and Mexican to the south. The population of California is about 38,000,000 and area is 423,970 square kilometers. California`s climate varies from Mediterranean to subarctic. Much of the state has a climate with cool, rainy winters and dry summers. There are more rain in the southen part of California. The Golden Gate bridge in San Fransisco is one of the most famous landmark in California. The Golden Gate bridge have ...
vocabulary and material I have worked through. Despite of scientific text and complicated words I managed to understand the topic and make it as easy as possible for others to follow. Used sources http://www.habmigern2003.info/biogas/biogas.html http://www.biogas.psu.edu/Safety.html http://www.oecd.org/dataoecd/28/59/36203835.pdf http://www.scienzagiovane.unibo.it/english/solar-energy/glossary-solar- energy.html http://www.newenergyworldnetwork.com/renewable-energy-news/by- technology/biofuel-biomass/waste-to-energy-plants-gain-traction-in-2010.html http://ph.news.yahoo.com/rtrs/20101209/tbs-rhodia-biogas-7318940.html http://www.renewables-in-school.eu/worksBiogas.htm http://www.greenpowerindia.org/biogas_benefits.htm http://www.inseda.org/Presentation/Biogas-the%20future%20Sustainable %20Energy-Fr%20Mathew.pdf http://www.folkecenter.net/gb/rd/transport/biogas_for_transport/ http://www.fvee.de/fileadmin/publikationen/Workshopbaende/ws2003-2/ws2003-
The environment in realtion to mobility/transport in Europe Air pollution is problem all over the world. Through some pollution comes from these natural sources, most pollution is the result of human activity. The biggest causes are the operation of fossil fuel- burning power plants and automobiles that combust fuel. Combined, these two sources are responsible for about 90% of all air pollution in the United States. All kind of pollutions can lead us to serious health problems. For example, air pollution is increasingly being cited as the main cause of lung conditions such as asthma - twice as many people suffer from asthma today compared to 20 years ago. Every year, 3.2m Europeans are diagnosed with cancer - the most common cause of death after heart disease. Most widespread are cancers of the lungs, breast and colon. Diseases such as bronchitis, lung cancer and heart diseases may all eventually appear in people exposed to a...
Ecological problems Situation Reason Consequenses Suggestions for solutions Ozone layer is damaged · Using different sprays · Increase of UV-rays · Ozone friendly products · Burning rubber and other (causes cancer) · Campaigns to make people plastics · There is no life possible on aware of dangers · Factories produce sulphur the Earth without ozone layer Depletion of natural resources · Misusage of natural · Loss of luxurity · Using renewable resources ...
Tuuleenergia Euroopas ja maailmas Eurооpa Liidus pаndi 2013. ааstаl tuulееnеrgial töötаvаid еlеktrijааmu 11,2 gigаvаti (GW) ulаtusеs, mis tееb kõikidе liikmеsriikidе tuulееnergiа koguvõimsusеks 117,3 GW. Lisаfаktе: • Tааstuvеnеrgiа еsindаs 72% kõikidеst uutеst 2013. ааstal rаjаtud еlеktritооtmisе võimsustеst, kusjuurеs küttеõlil, kivisöеl töötаvаtе – ning tuumаjааmаdе kаsvunumbrid jäävаd jätkuvаlt nеgаtiivsеks tänu mullu tegevusе lõpеtаnud еlеktrijааmаde suurеmаlе osаkааlulе. • Tuulеpаrgid mооdustаvаd 32% kõikidеst ееlmisеl ааstаl Euroopа Liidus еhitаtud uutеst elektrijaamadest. • EL riikides investeeriti mullu tuulееnеrgiаssе invеstееriti 13,0 – 18,0 miljardit eurоt. Eestis ееlmisеl ааstаl vаlminud tuulеpаrkidе koguinvesteering ületаs 122 miljonit eurot. • 2013. aastal tootsid tuulikud Euroopa Liidus keskmiselt 8,0% vajaminevast elektrist. • 2013. aastal lisаndus Euroopаs kokku tuulееnеrgiаt 11,2 GW, sh meretuuleparke ehk offshore t...
1 Wave energy Introduction to wave energy There are several possibilities to harvest different forms of energy from the sea. One of these options is the usage of waves for the generation of electricity. The devices needed to perform this task are called wave energy converters. Wave energy is indirect solar energy in twice. At first there is the wind, which is caused by variations in atmospheric pressure due to a differential solar heating of earth's surface by the sun. Different regions of pressure drives a force which rises a movement of atmospheric air masses that causes the earths wind system. If wind strikes over the surface of an open water, waves are induced. First they are very flat with only a low level of energy. When there is a long distance over the water on which wind can attack the small ones, they became bigger and bigger with a l...
road signs All speed limit signs in the Republic changed to the metric system in 2005. Some direction signs still show distance in miles so tourists often mix them up. There are usually about 10 signs or more on one post , and its really hard to see them when driving, so tourists disturb traffic quite often when slowing down to read the signs All the signs are multilingual ,due to high percentage of English speakers Forests Ireland has only about 8 % of his whole land covered with forests. Centuries ago people cut the forests and didn't think about the future so nowadays there is mostly peat ( turvas) which Ireland uses to produce energy. Economy Ireland had a big economic boom in the late 20'th century, but now the Republic of Ireland is ranked the second wealthiest per capita country in the European Union. Education in Ireland is free at all levels, including college. The construction sector, which is inherently cyclical in nature, ...
We live in a constantly changing world There seems to be no stability or certanity about anything. Nations rise and fall, governments come to power and tumble, armies march and retreat, healthy people become sick and on and on the world goes. On the one hand the world we are living in is amazing, because science, medicine, technology, and so on are advancing at an ever-increasing pace. It has made our lives much easier than it was 100 years ago. For example we have phones, television, fast cars, eco towns, highrise buildings and so on. But on the other hand the world can also be frightful. People are starving, and do not have water to drink nor wash themselves. But somewhere someone has unlimited food and water and never thinks about those people who are in need. Due to the over consumption of water, gas, wood et cetera, we might be in a lack of mineral resources in the future. And if they run out, we need to find an alternative vari...
BARRIERS TO DISTRICT HEATING DEVELOPMENT IN SOME EUROPEAN COUNTRIES Abstract District heating (DH) offers low primary energy demand, high security of supply and small CO 2 emissions. Barriers to DH in the UK, Ireland, France, Romania and the Czech Republic have been compiled through publications and interviews. DH systems require large investments, have negative initial cash flow and long payback time, which obstructs financing. One actor should control DH from source to consumption. If the value chain is fragmented, contracts are required between the links. It increases risks and financing costs, like in the UK and Ireland, where DH is not established. There are few multi- family houses with central heating and it is expensive to build DH networks in built areas. Most French DH systems are operated according to long-term concessions by companies that sell electricity and gas. No strong actor provid...
3. slaid If we destroy some kind of spiece, we cant recreate it. They carrie unique information which cant be restored. Maybe in the future, the technology will get so far that they can recreate some extincted spieces. Here is araucaria mirabilis which was living approximately 160 million years ago If we create some culture on the field or cut down some alder forest and replace it with spruces, will it have interaction to the whole world? It's extremely difficult to answer, because there are so many factors. 4. slaid Renewable resources have became metaphor with meaning that its easy way to produce energy. Its easy to destroy our forests but it changes our ecosystem. They cause blowdowns, erosions and so on. 5.slaid scope of history Forests sometimes need to be updated. We need to take down trees with diseases. But we cant cut down trees which have cultu...
Margit Tepner k0848752 Sustainability aspects of biofuels 1. Introduction The literature review will discuss the sustainability aspects of biofuels. Food production will be the main concern as it is the most debated issue, but other aspects, such as land use change and water consumption will be also considered as they are essential aspects in the biofuels sustainability criteria. The review will discuss the viability of biofuels based on the current technologies. Second-generation biofuels are not yet commercially viable and therefore will not be discussed; although they could significantly improve the sustainability of biofuels when they break through to the industrial scale. 2. The scale of biofuels production 2.1. Drivers of biofuels production Lal (2010) stated that "three inter-connected challenges face humankind in the 21st century": food security, climate change, and energy security. The world...
Ecology and Environment I Word formation Noun Verb Adjective Eruption Protection Pollution - Penetration Contamination Emission - Depletion - Prediction Reduction Consumption Campaign/campaigner Disaster - Radiation Destruction - II Give the opposite ... Renewable resources Use Protect Admissibly Predicted III Fill in the correct word 1. The polar bear's .......................... is the icy waste...
10.kl VOCABULARY OF UNIT 4 acid rain happevihm address aadress afar kaugele (nt maale) alternative alternatiiv, valikuvõimalus ant sipelgas armour soomus, raudrüü array rivi, rida ballad ballaad ban keelustama budget eelarve can´t help ei saa midagi parata can´t stand ei talu car pool auto ühiskasutus centipede sajajalgne circumference ümbermõõt clad kaetud, riietatud clover ristikhein coal kivisüsi community kogukond, ühiskond consequence tagajärg conservation looduskaitse crimson veripunane, tulipunane daisy tree karikakra puu deceive tüssama, petma, eksiteele viima deforestation metsa lageraie demand nõudma diameter diameeter drawback puudus, tagasilöök drift triivima, hulkuma emit eraldama, kiirgama endangered species ohustatud/hävimisohus liigid energy use energia kasutus epic eepiline, kangelaslik face vastu astuma, silmitsi olema fairy land muinasjutumaa fil...
Air pollution Every day, the average person inhales about 20,000 liters of air. Every time we breathe, we risk inhaling dangerous chemicals that have found their way into the air. Air pollution includes all contaminants found in the atmosphere. These dangerous substances can be either in the form of gases or particles. Air pollution can be found both outdoors and indoors. Pollutants can be trapped inside buildings, causing indoor pollution that lasts for a long time. The sources of air pollution are both natural and human-based. As one might expect, humans have been producing increasing amounts of pollution as time has progressed, and they now account for the majority of pollutants released into the air. Air pollution has been a problem throughout history. Even in Ancient Romepeople complained about smoke put into the atmosphere. The effects of air pollution are diverse and numerous. Air...
Kui neid toksilisi materjale ei käidelda korrektselt, siis võivad need üpriski ohtlikuks nii keskkonnale kui ka inimestele osutuda. 2.5. Globaalne soojenemine Kuigi päikeseenergiast elektri genereerimine ei põhjusta globaalset soojenemist, siis näiteks tootmine, materjalide vedu, installatsioon, hooldus ja demonteerimine võivad seda küll tekitada mingil määral.1 1 „Environmental Impacts of Solar Power“ [Võrgumaterjal]: http://www.ucsusa.org/clean_energy/our-energy- choices/renewable-energy/environmental-impacts-solar-power.html#.VEYyr7CsWKE 7 3. Päikeseenergia tootmine 3.1. Päikeseenergia ja elekter 17. sajandil kirjeldati esmakordselt elektrienergiat ka teaduslikult, ning alates sellest ajast on inimkonna elektrienergia kasutamine jõudsalt kasvanud. Seni pole meil päikeseenergiast aga peaaegu üldse toodetud elektrit, kuigi võimalused selleks on.
NEW ZEALAND Geography: New Zealand is situated midway between the Equator and the South pole in the southern Pacific Ocean. It consists of two large islands, North Island and South Island, plus several smaller ones of which Stewart Island is the largest. North and South Islands are separated by the 32km wide Cook Strait. The total land area is 270,535 sq Km, about the size of Italy, the United Kingdom or the US state of Colorado. North Island is volcanically active with three active volcanoes. South Island has the high snow covered mountain peaks and glaciers of the Southern Alps, a range running almost 500Km along the Island. The longest river is the Waikato on North Island (425 Km), the largest inland stretch of water is Lake Taupo also on North Island (607 sq Km) and the highest point is Mount Cook on South Island (3754 m). Over 75% of New Zealand is above 200m. Land use is broken down to about: forested 30% - meadows and pastures...
TALLINNA ÜLIKOOL Matemaatika ja Loodusteaduste Instituut Loodusteaduste osakond Kas elame inimtegevusest põhjustatud kliimamuutuste ajal: poolt- ja vastuargumendid Referaat Tallinn 2012 Sisukord Kliimamuutused.....................................................................................................................4 Mis on kliimamuutused?...................................................................................................4 Kliimamuutused planeedil Maa.........................................................................................4 Inimtegevusest põhjustatud kliimamuutused: poolt- ja vastuargumendid.............................6 Kokkuvõte.........................................................................................................................9 Kasutatud kirjandus...
Tallinn 2013 Ott Speek Subject: English Geodesy Study group: GI-21b PETROLEUM PRESENTATION Petroleum (L. petroleum, from Greek: Πέτρα (rock) + Latin: oleum (oil) is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. The name Petroleum covers both naturally occurring unprocessed crude oils and petroleum products that are made up of refined crude oil. A fossil fuel, it is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure. Petroleum is recovered mostly through oil drilling. This comes after the studies of structural geology (at the reservoir scale), sedimentary basin analysis, reservoir characterization (mainly in terms of porosity and perme...
Tartu Kivilinna Gümnaasium Liis Viljak 10b Bodyshop Company The Body Shop International plc is a global manufacturer and retailer of naturally inspired, ethically produced beauty and cosmetics products. Founded in the UK in 1976 by Dame Anita Roddick, we now have over 2,100 stores in 55 countries, with a range of over 1,200 products, all animal cruelty free, and many with fairly traded natural ingredients. We were the first international cosmetics brand to be awarded the Humane Cosmetics Standard for our Against Animal Testing policy. And we have our own fair trade programme called Community Trade, making us the only cosmetics company with such an extensive commitment to trading fairly. Community Trade now works with 31 suppliers in 24 countries, providing over 15,000 people across the globe with essential income to build their futures. The Body Shop is a leader in the trend towards greater corporate transp...
Itaalia Vabariik Referaat Erik Salm Paide Ühisgümnaasium 2007 Itaalia Vabariik ISO 2-täheline kood: IT ISO 3-täheline kood: ITA Lipp: Vapp: Kaart: Geograafiline asend Itaalia Vabariik on riik Lõuna-Euroopas. Itaalia asub 800 km Vahemerre ulatuval saapakujulisel Apenniini poolsaarel. Põhjapoolne piirkond on mägine. Loodusliku piiri moodustavad Alpid. Maastik on suurte mägede ja sügavate orgude rohke. Itaaliale kuuluvad kaks Vahemere suurimat saart Sitsiilia ja Sardiinia - ning hulk väiksemaid saari. Põhjas on Itaalial maismaapiir Austria (430 km), Prantsusmaa (488 km), Sloveenia (232 km) ja Sveitsiga (740 km). Rannajoone pikkus on 7600 km. Enklaavina asuvad Itaalia territooriumil iseseisvad San Marino ja Vatikani riigid. Satelliitfoto Itaaliast Faktid: Pealinn: ...
Misso Keskkool New Zealand Precis Compiler: Maiki Joakit Instructor: Mailis Teppo Misso 2011 New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses (the North Island and the South Island), and numerous smaller islands, most notably Stewart Island/Rakiura and the Chatham Islands. The indigenous Mori language name for New Zealand is Aotearoa, commonly translated as land of the long white cloud. Population (1998): 3,801,000.New Zealand is notable for its geographic isolation; it is situated about 2,000 kilometres (1,200 mi) southeast of Australia across the Tasman Sea, and its closest neighbours to th...
All about High Tech High tech is technology that is at the cutting edge--the most advanced technology currently available. There is no specific class of technology that is high tech--the definition shifts over time--so products hyped as high tech in the 1960s would now be considered, if not exactly low tech, then at least somewhat obsolete. This fuzzy definition has led to marketing departments describing nearly all new products as high tech. Economy Because the high-tech sector of the economy develops or uses the most advanced technology known, it is often seen as having the most potential for future growth. This perception has led to high investment in high-tech sectors of the economy. High-tech startup enterprises receive a large portion of venture capital. However, if, as has happened in the past, investment exceeds actual potential, then investors can lose all or most of their investment. High tech is often viewed as high risk, but...
1.1990-92 majanduslanguse järgselt- following the receission of 1990-92 2.tõus osalise tööajaga töötamises- growth in part-time employment 3.avalike teenuste pakkumine- provision of public services 4.edendama ettevõtte konkurensivõimet- to improve the competitiveness of companies 5.kaupade ja teenuste hind- the proce of goods and services 6.keskkonna kaitsmine- protection of the environment 7.kulutuste eelisvaldkonnad- priority areas for expenditure 8.aastakäive- annual turnover 9.tööjaotus- division of labour, work allocation, labour distribution 10.kõrgkvaliteetsed seadmed- high quality equipment 11.tasakaaluhind- clearing price 12.töötlev tööstus- manufacturing industry, primary industry, secondary industry 13.pikaajalised majapidamiskaubad- household durables 14.sisemajanduse kogutoodand- gross domestic product 15.tulu välisturismist- overseas tourism revenue 16.vähenevate tulude seadus- the law of diminishing return 17.ehitustööstu...
Scotland ! Scotland (Gaelic: Alba) is a country in northwest Europe that occupies the northern third of the island of Great Britain. It is part of the United Kingdom, and shares a land border to the south with England. It is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the southwest. In addition to the mainland, Scotland consists of over 790 islands including the Northern Isles and the Hebrides. Edinburgh, the country's capital and second largest city, is one of Europe's largest financial centres. It was the hub of the Scottish Enlightenment of the 18th century, which saw Scotland become one of the commercial, intellectual and industrial powerhouses of Europe. Scotland's largest city is Glasgow, which was once one of the world's leading industrial metropolises, and now lies at the centre of the Greater Glasgow conurbation which dominates the Scottish Low...
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