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 would happen if there were no oil, coal 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. It 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’re able to
collect solar energy, we’ll be sure to make good use of this abundant source of power.
Another source of energy from nature is the wind. Wind power is clean and plentiful. Energy
from the wind has been used for centuries to move ships, grind grain, pump water and do other kinds
of work. In more recent time, wind power 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 power were to mill grain, saw wood and power machinery for the textile
industry. Today water power is mostly used to generate electricity.
11. We are asking the question “What would happen if there were no oil, coal and gas on earth?” because ___.
A. we are now depending so much on fossil fuels.
B. we are looking forward to seeing great changes.
C. we are looking for other alternative sources of energy.
D. other sources of energy can come from the sun, the wind and the water.
12. Which of the following can NOT be used as alternative sources of energy?
A. coal/gas B. the sun/the water
C. the sun/the wind D. solar energy/nuclear power
13. Centuries ago, people used wind power to ___.
A. maintain the earth’s temperature B. get water from underground
C. grow plants D. generate electricity
14. Up till now, water energy has been used for ___.
A. similar purposes C. the textile industry
B. moving ships D. different purposes

4
15. The word “plentiful” in line 8 mostly means ___.
A. fresh B. natural C. available D. limited

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.

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

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

Read the text and fill in the blank.

Common. Atlternative. Internal. Clean. Solar

Fossil fuel is the most.... source of energy today, but it is not considered.... energy. There are various other sources of alternative energy that must be incorporated if the next generations are expected to have energy. Water, wind, the.... heat of the earth, and the sun are all being harnessed to create energy. Geothermal energy and.... energy are more common. Homes are being heated and cooled, cars, are being driven, and electricity is used all from these various.... sources of energy. All are examples of clean energy, which is better for the environment because it does not cause pollution.

Mr Lam is giving a lecture on energy sources. Read the text and choose the best option (A, B, or C) to complete the sentences.

Hello, class. Today I'd like to tell you about two energy sources. They are non-renewable sources and renewable sources.

Non-renewable sources are coal, oil and natural gas. We can use these sources to produce energy. They are cheap and easy to use. People use them a lot. But they are very limited and will run out soon.

Renewable sources come from the sun, wind or water. When energy comes from the sun, we call it solar energy. Wind energy comes from the wind, and hydro energy comes from water. Renewable sources are available, clean and safe to use. But they are expensive to produce.

In the future we will rely more on renewable energy sources. They are better for the environment and they will not run out.

1. Non – renewable sources are cheap and _________.

A. available

B. easy to use 

C. expensive

2. _________come from the sun, wind or water.

A. Renewable sources

B. All energy sources

C. Non-renewable sources

3. When energy comes from water, we call it_________.

A. wind energy 

B. solar energy

C. hydro energy 

4. Renewable energy sources are better for_______.

A. the environment 

B. our cars

C. hydro energy

GRADE  7                                                    UNIT 10: SOURCES OF ENERGY

I. Choose the correct answer (A, B, C or D).

      1.   The wind, the sun, and the wave are some types of .................. sources of energy.

            A. changeable             B. alternative               C. cheap                      D. costly

      2.   Remember to .................. the lights before going to bed.

            A. turn                         B. turn on                    C. turn off                   D. stop

      3.   People will reduce energy .................. as much as possible.

            A. consume                 B. consumption           C. expense                   D. expenses

      4.   Nuclear power is expensive and dangerous .................. our environment.

            A. for                          B. to                            C. in                            D. with

      5.   Human is looking for a clean, cheap and .................. sources of energy.

            A. effective                 B. effect                      C. effectively              D. effectiveness

      6.   Low energy light bulbs should be used to .................. electricity.

            A. spend                      B. buy                         C. convert                   D. save

      7.   We must .................. the amount of water our family used every day.

            A. rise                          B. reduce                     C. raise                        D. narrow

      8.   At this time next month we .................. to Ha Long Bay for a holiday.

            A. will go                    B. will going               C. will be gone            D. will be going

      9.   By the middle of the 21^st century, people in developing countries .................. more renewable energy.

            A. uses                        B. will be using           C. used                        D. have

      10. Fossil fuels are very common in our society but they .................. the environment.

            A. renew                     B. provide                   C. waste                      D. pollute

II. Give the correct form of the word given to complete the sentence.

      1.   Tidal energy is renewable, ............................ and clean.                                (plenty)

      2.   Wind will be used as an ............................ friendly sources of energy.         (environment)

      3.   There are many ways will be used to solve the problem of ....................       (pollute)

      4.   Solar power can be used to ............................ or cool our houses.                 (hot)

      5.   ............................, fossil fuels are harmful to the environment.                     (fortunate)

III. Find and correct the mistake in each sentence.

      1.   You can save the electricity by turn off the lights when not using them.                  ...........

                        A                     B                  C                                      D       

      2.   He will clean his house at 9 am tomorrow.                                                                 ...........

                    A      B                        C            D

      3.   My sister will be buying a house in the city center next year.                                    ...........

                              A         B                                 C                    D

      4.   They will build a five-stars hotel on this street.                                                          ...........

                             A                 B        C     D

      5.   A solution for the environment problem will soon be finding by scientists.              ...........

  IV. Write the correct form or tense of the verbs in brackets.

1. I’ll call you at 8 o’clock tonight. What ____________(you/do) then?

2. At present, global demand for  energy__________(increase) rapidly.

3. Three years  ago. we____________(install) a solar water heating system on our roof

4. What _____________(happen) if non-renewable resources run out?

5. A small hydropower plant_________________(build) on the river next year.                                .

V.    Read the following passage, and then tick the correct answers: true (T), or false (F).

       Energy is very important in modem life. People use energy to run machines, heat andcool their homes, cook, give light, transport people and products from place to place. Most energy nowadays comes from fossil fuels such as petroleum, coal, and natural gas. However, burning fossil fuels causes pollution. In addition, if we don’t find new kinds of energy, we will use up all the fossil fuels in the 21^th century. Scientists are working to find other kinds of energy for the future. What might these sources of energy be?

                                                                                                                                           T           F

1.    Energy is of great importance in modern life.                                                             o         o        

2.    Energy is used to produce a lot of electrical things.                                                   o         o

3.    Burning fossil fuels causes pollution.                                                                          o         o

4.    Fossil fuels are limited.                                                                                               o         o

5.    Everyone tries their best to find other kinds of energy for the future.                       o         o

                VI. Complete the second sentence so that it has similar meaning to the first.

                 1. Solar and wind will replace fossil fuels within 20 years

                 Fossil fuels…………………………………..

                 2. This is the first time I have visited Yaly hydroelectric power plant.

                 I have……………………………………….

                 3. They built the first hydroelectric power plant in Niagara Falls in 1879.

                 The first hydroelectric power plant……………………………

                 4. People will use biogas for fuel in homes and for transport.

                  Biogas………………………………….

                5. We will use less electricity in the future .

                 Les electricity ……………………………

 bài 1 tìm và chữa lỗi sai

they enact laws to protect the enviroment next month

bài 2 

More and more countries...... alternative sources of energy such as sun , wind and water nowadays

A: are using                    B: will use              C: uses                D: is using 

In the future , people ......go to school or university . They .... study at home using their computer 

A: won't / ươn't                B: will / will              C: will/ won't       D: won't will

Read the passage and check (ü) whether the following statements are true (T) or false (F).

Energy makes change; it does things for us. It moves cars along the road and boats over the water. It bakes a cake in the oven and keeps ice frozen in the freezer. It plays our favourite songs on the radio and lights our homes. Energy makes our bodies grow and allows our minds to think. Scientists define energy as the ability to do work. People have learned how to change energy from one from one form to another so that we can do work more easily and live more comfortably.

All forms of energy are stored in different ways, in the energy sources that we use every day. These sources are divided into two groups – renewable and nonrenewable. Renewable energy source is an energy source that can be replenished in a short period of time. Nonrenewable energy source is an energy source that we are using up and cannot recreate in a short period of time.

Renewable energy sources include solar energy, which comes from the Sun and can be turned into electricity and heat. Wind, geothermal energy from inside the Earth, biomass from plants, and hydropower and ocean energy from water are also renewable energy sources.

However, we get most of our energy from nonrenewable energy sources, which include the fossil fuels – oil, natural gas, and coal. They’re called fossil fuels because they were formed over millions and millions of years by the action of heat from the Earth’s core and pressure from rock and soil on the remains of dead plants and animals. Another nonrenewable energy source is the element uranium, whose atoms we split (through a process called nuclear fission) to create heat and ultimately electricity.

Question: Wind, biomass, hydropower and ocean energy also renewable energy sources and oil, natural gas, coal and the element uranium are nonrenewable energy sources.

A. True

B. False

We use many different energy sources to do work for us. Energy sources are classified into two groups - renewable and nonrenewable. Non-renewable energy sources are those that take millions of years to form and will run out some day. It is energy that comes from fossil fuels such as coal, crude oil, and natural gas. Fossil fuels are mainly made up of carbon and were formed millions of years ago. The chemical reaction which takes place when we burn fossil fuels releases carbon compounds such as carbon monoxide and carbon dioxide into the air. Carbon dioxide is one of the green house gases which is contributing to global warming and air pollution. On the other hand, renewable energy sources will never run out, are better for the environment and do not cause pollution. Renewable energy is often called green energy because it is a natural energy, always available and does not have to be formed like nonrenewable energy. The green energy is always there. For example, the Sun consistently shines, water is abundant, and the winds blow throughout the year. The five types include solar, energy from the Sun; geothermal, energy from heat within the Earth; hydroelectric, energy from moving water; biomass, energy from dead plants and microorganisms and finally, energy from the wind.