School year: 2009 - 2010
Nguyen binh khiem high school
By: Dao Thi Huyen
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WARMLY WELCOME TO ALL THE TERCHERS
1.Three things you can feel but cannot see: wind, heat, cold, ...

2. Three things you can use to cook:
gas, electricity, wood,...

3. Three planets we can see easily from the Earth: Sun, Moon, Mercury,...

4. Three kinds of liquid: water, oil, petrol,...

Unit 11: Sources of energy
Lesson 1: Reading
Energy
Fossil
Fuels
Electricity
Wind
Petrol
Coal
Gas
Water
Nuclear
Solar
Geothermal
Oil
Sources
of energy
Wind mills ->wind energy
Solar panels  solar energy
Water power  electricity
Hydroelectric-power station / dam
Nuclear power
Nuclear power station
Geothermal heat
Nuclear energy (n) : Năng lượng hạt nhân
nguyên tử
Solar energy (n): Năng lượng mặt trời
Wind power (n): Năng lượng gió

Water power (n): Năng lượng nước
Geothermal heat (n): Địa nhiệt
Potential (n): Tiềm năng
Infinite (n): Không giới hạn
Read the passage and then do the task that follow
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 very 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 year, but it can be dangerous. Another alternative source of energy is geothermal heat, which comes from the 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 moves from a high place to a lower place, it makes energy. This energy is used 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, so water energy is expensive.
The sun releases large amounts of energy every day. This energy can be changed into electricity. Many countries use solar energy for their daily life. Solar panels on the roofs of houses 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 disadvantages, 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.
Task 1. The words in the box all appear in the passage. Fill each blank with a suitable word. (Use a dictionary when necessary)

Six hundred balloons were ………......at the ceremony.
They are looking for …………….. methods of making it.
People use ………….... to run machines, heat and cool their homes.
The food in the restaurant is cheap, but the choice is rather …. ..…. .
Fuel supplies are nearly ………………..
alternative
limited
energy
released
exhausted
Task 2: Scan the passage and write down the advantage(s) and disadvantage(s) of each alternative source of energy.
Task 3. Answer the questions
1. What is our major source of energy ?
2. How many sources of energy are mentioned in the text, and which one do you think has the most potential ?
Who Wants to Be a Millionaire?
Solar energy
Water power
Wind power
Nuclear power
Geothermal heat
Alternative sources of energy
Advantages
Disadvantages
Homework: - Do the exercise in part
‘ After you read’ on page 126.
- Prepare speaking lesson for the
next period