Bài giảng Tiếng Anh lớp 11 Unit 11: Sources of Energy (Reading)

Good morning Welcome to our class  Is it delicious? Do you often cook? Unit 11 Sources of energy (Reading) Vocabulary   Fossil fuels Coal Oil Natural gas  Nuclear energy Vocabulary   Wind power  Windmills Vocabulary  Solar panels  Solar energy Vocabulary  Hydroelectric Dam  Water power Vocabulary   Geothermal heat Vocabulary  Exhausted (adj) Exhaust (v,n) Vocabulary  - Reserve (v): - Alternative (a): - Dangerous (a): - Available (a): - Plentiful (a): - Release (v): - Infinite (a): Để dành, dự trữ Thay thế Nguy hiểm Có thể dùng được, sẵn có Có nhiều, phong phú Nhả ra, phóng ra Không giới hạn Vocabulary  TASK 1 : The words in the box all appear in the passage. Fill each blank with a suitable word alternative, limited, energy, released, exhausted Six hundred balloons were . at the ceremony They are looking for methods of making it People use to run machines, heat, cool their homes The food in the restaurant is cheap, but the choice is rather Fuel supplies are nearly released alternative energy limited exhausted TASK2 : Scan the passage and write down the advantage (s) and disadvantage (s) of each alternative sources of energy Sources of energy advantages Disadvantages Nuclear power Solar energy Water power Wind power Geothermal heat unlimited can be dangerous plentiful, clean, infinite, safe only possible during the day time clean, unlimited expensive clean, unlimited no wind no energy available only possible in some places TASK3: Answer the questions 1.What is our major source of energy?. Our major source of energy is fossil fuels 2. How many sources of energy are mentioned in the text, and which one do you think has the most potential? Five sources of energy are mentioned in the text. I think solar energy is the most potential. What do you need energy for? What do you need energy for? Does it renew itself? Non-renewable energy Complete the summary of the reading passage by filling each blank with a suitable word from the box. one, environment, alternative, limited, unlimited, sources, energy, fuels We need energy to live and work. Our major source of is oil. Oil is ..kind of fossil fuel. The amount of fossil . in the world is.. Therefore, we must save it, and at that time, we must find new sources of energy. Geothermal heat and nuclear power are sources of energy. They can give us electricity. Other alternative are the sun, waves and water. These sources are not only..and available but also clean and safe for the . People should develop and use them more and more in the future . one fuels limited alternative Sources unlimited environment energy Thank you for your listening Alternative (adj): a thing that you can choose to do or have out of two or more possibilities.   Alternation (n) Alternatively (adv) Potential (adj): that can develop into something or be developed in the future.  Potentiality ( n )   P otentialize (v)  Potentially (adv) While you read At present, most of our energy comes from fossil fuels (oil, coal, and natural gas). However, such reserves are limited. Because power demand is increasing rapidly, fossil fuels will be exhausted within a relatively short time. Therefore, people must develop and use alternative sources of energy. One alternative source is nuclear energy. Nuclear energy can provide enough electricity for the world’s need for hundreds of years, but it can be very dangerous. Another alternative source of energy is geothermal heat, which comes from deep inside the earth. Scientists use this heat to make energy. However, this energy is available only in a few places in the world. The sun, water, and the wind are other alternative sources of energy. The wind turns windmills and moves sailboats. It is a clean source of energy, and there is lots of it. Unfortunately, if the wind does not blow, there is no wind energy. When water from a high place to a lower place, it makes energy. This energy is use to create electricity. Water power gives energy without pollution. However, people have to build dams to use this energy. And as dams cost a lot of money, water energy is expensive. The sun releases large amounts of energy every day. This energy can be changed into electricity . Many country use energy for their daily life. Solar panels on the roofs of house can create enough energy to heat or cool an entire house. Solar energy is not only plentiful and infinite but also clean and safe. Although there are some disadvantage, the potential of alternative sources of energy is great. However, how to make full use of these sources of energy is a question for researchers all over the world.