IV. Read and choose the answer.

                                        FOSSIL FUELS

The sun’s energy is stored in coal, natural gas, water and wind. Coal, oil and natural gas are known as fossil fuels. Fossil fuels were formed over millions of years when the remains and fossils of prehistoric plants and animals sank to the bottom of swamps and oceans.

We use the energy in these fossils fuels to make electricity. We use electricity in many different  ways. We light and heat our homes, schools and businesses using electricity, and to run computers, refrigerators, washing machines and air conditioners. Our cars and planes run on gasoline, which comes from oil. As of the year 2013, most of the energy we use comes from fossil fuels.
1. Where is the sun’s energy stored?

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2. What is the example of fossil fuels?

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3. Where do we get most of electricity from?

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4. What do we use electricity for? 

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5. Where does gasoline some from?

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Almost all our energy comes from oil, coal, and natural gas. We call them fossil fuels. The earth’s fossil fuels are running out. What will happen when there is no coal, oil and gas on earth? Scientists are trying to find and use other alternative sources of energy. We can use energy from the sun, the wind, and the water. Solar energy is unlimited. The sun supplies all the energy used to grow plants, to evaporate water for rain, and to maintain the temperature of the planet. All are necessary for human life. If we are able to collect solar energy, we will be sure to have this abundant source of power. Another source of energy from nature is the wind which is clean and plentiful. Energy from the wind has been used for centuries to move ships, grind grain, pump water and do other forms of work. In recent time, wind has been used to generate electricity. Water can also provide power. For a long time, people have used water to power machines. Some early uses of water were to mill grain, saw wood and power machinery for the textile industry. Today water is mostly used to generate electricity. 28. The fossil fuels on earth are ....................... A. unlimited B. being used up C. renewable D. not uesd now 29. Solar energy means the power from the ............................. A. fossil fuel B. temperature C. electricity D. sun 30. The word “abundant” in the passage is closest in meaning to ............................ A. necessary B. limited C. plentiful D. natural 31. Centuries ago, people used wind power to ........................... A. get water from underground B. grow plants C. maintain the earth’s temperature D. generate electricity 32. Nowadays water energy is mainly used to ................................ A. power machine B. mill grain C. saw wood D. generate electricity

Almost all our energy comes from oil, coal, and natural gas. We call them fossil fuels. The earth’s fossil fuels are running out. What will happen when there is no oil, coal and gas on the earth? Scientists are trying to find and use other alternative sources of energy. We can use energy from the sun, the wind, and the water. Solar energy is unlimited. The sun supplies all the energy used to grow plants, to evaporate water for the rain, and to maintain the temperature of the planet. All are necessary for human life. If we are able to collect solar energy, we will be sure to have this abundant source of power.

66.What are the other words or phrase for fossil fuels?

A. oil                       B. oil, gas, natural gas         C. natural gas                      D. coal

67.Natural sources of energy are energy from      .

A. the sun, wind, water                                      B. water                              C. wind                   D. the sun

68.From which do plants on the earth get energy?

A. the moon            B. the sun                           C. stars                              D. the Mars

69.We are asking the question, “What will happen when there is no oil, coal, and gas on the earth?” because           .

A. we are looking for other alternative sources of energy                                 B. we are looking forward to seeing great changes

C. we are now depending so much on oil, coal, and natural gas

D. other sources of energy can come from the sun, wind, and water

70.The word “abundant” in the passage is closest in meaning with            .

A. natural                B. necessary                       C. plentiful                          D. Limited

III. Read the passage carefully and choose the best answer (5 points).

      Almost all our energy comes from oil, coal, and natural gas. We call them fossil fuels. The earth’s fossil fuels are running out. What will happen when there is no oil, coal and gas on the earth?

      Scientists are trying to find and use other alternative sources of energy. We can use energy from the sun, the wind, and the water.

      Solar energy is unlimited. The sun supplies all the energy used to grow plants, to evaporate water for rain, and to maintain the temperate of the planet. All are necessary for human life. If we are able to collect solar energy, we will be sure to have        this abundant source od power.

      1.   From which do plants on the earth get energy?

            A. stars                 B. the Mars          C. the moon         D. the sun

      2.   What are the other words or phrase for fossil fuels?    

            A. natural gas      B. oil                     C. coal                  D. oil, gas, natural gas

      3.   Natural sources of energy are energy from                      .

            A. wind                B. the sun             C. water                D. the sun, wind, water

      4.   The word “abundant” in the passage is closet in meaning with                       .

            A. plentiful          B. limited             C. natural             D. necessary

      5.   We are asking the question, “What will happen when there is no oil, coal, and gas on the earth?” because                      .

            A. we are now depending so much on oil, coal, and natural gas         

            B. other sources of energy can come from the sun, wind, and water

            C. we are looking forward to seeing great changes

            D. we are looking for other alternative sources of energy

điền các từ sau vào ô trống :

There are a lot of ways we can help. We must keep water clean and not waste it. Some _____ are helping people to collect and store water. They are also ______ new dams, wells, and pumps, so that poeple can have clean water _____ their homes. We must use non-renewable ____ carefully, Scientists are investigating ways to use renewable resources, like sun, wind, and water, to make electricity so that we don't need to use so many _____. we can also try to use less electricity