1. energy is converted into electrical energy provided by biofuels, water, 2. , sun, fossil fuels or radioactive materials. In particular, when fossil fuels burn, 3. is heated, 4. is produced, a 5. is spun and finally a 6. is started. The advantages of fossil fuels are their high energy, 7. , 8. , availability and the fact that no treatment is needed. But there are also important disadvantages, such as air pollution, the fact that they are non-9. and the need for them to be extracted.
2.1 Write a definition of accessibility.aperta
Soluzione suggerita:The quality of something which is easy to obtain.
2.2 Write a definition of climate change.aperta
Soluzione suggerita:The change in the average temperature and weather in a certain area over a long period of time.
2.3 Write a definition of energy-efficient.aperta
Soluzione suggerita:Capable of producing a good amount of energy, especially in small quantities.
2.4 Write a definition of greenhouse gas.aperta
Soluzione suggerita:A gas that absorbs radiations from the sun, heating the earth’s surface.
2.5 Write a definition of non-renewable.aperta
Soluzione suggerita:Something that cannot be reproduced.
2.6 Write a definition of remains.aperta
Soluzione suggerita:Things which are left from the past.
2.7 Write a definition of the verb to run out.aperta
Soluzione suggerita:To finish or become exhausted.
2.8 Write a definition of steam.aperta
Soluzione suggerita:The gas produced by boiling water.
2.9 Write a definition of supply.aperta
Soluzione suggerita:A stock or amount of something which is ready to be used.
2.10 Write a definition of turbine.aperta
Soluzione suggerita:A rotating device used in the electricity production process.
3.1 Watch the video and answer the questions in no more than four words: what were fossil fuels formed from?aperta
Soluzione suggerita:Ancient plants and organisms.
3.2 After watching the video provided in the previous exercise, answer the questions in no more than four words: what prehistorical era were fossil fuels formed in?aperta
Soluzione suggerita:In the Carboniferous era.
3.3 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: how long did the decomposing process take to start?aperta
Soluzione suggerita:Millions of years.
3.4 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: along with organic matter, which factors determined the formation of fossil fuels?aperta
Soluzione suggerita:Temperature, time, and pressure.
3.5 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what are the three main types of fossil fuels?aperta
Soluzione suggerita:Coal, oil, and natural gas.
3.6 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what organisms formed coal?aperta
Soluzione suggerita:Ferns, plants, and trees.
3.7 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what is the feature of fossil fuels that makes them popular as an energy source?aperta
Soluzione suggerita:Their high energy density.
3.8 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what are fossil fuels great emitters of?aperta
Soluzione suggerita:Carbon dioxide.
3.9 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what is the consequence of the production of greenhouse gases?aperta
Soluzione suggerita:Climate change.
3.10 After watching the video provided in Exercise 3.1, answer the questions in no more than four words: what kind of energy sources is society looking at?aperta
Soluzione suggerita:Sustainable and renewable ones.