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.

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 ……………………………

Read the text then answer the questions. (Đọc và trả lời câu hỏi)

Dear guests, I’d like to talk to you today about renewable and non-renewable energy. Fossil fuels are non-renewable energy sources. They include oil, coal, and natural gas. They can be used to create energy, generate electricity, or drive big machinery. Unfortunately, they are harmful to the environment. Viet Nam still relies mostly on non-renewable energy sources, however, hydro power is increasingly used here too.

Hydro and nuclear power can generate a great deal of energy. They are renewable and plentiful. However, hydro power is limited because dams cannot be built in certain areas. Nuclear power can provide enough electricity for the world’s needs, but it is dangerous. The sun and the wind are other alternative sources of energy. The wind turns turbines to

make electricity. Solar power can be converted into electricity. It can be used to heat or cool our houses. Although there are some disadvantages, these alternative energy sources can offer abundant amounts of clean, safe electricity. They will be valued more and more in the future in Viet Nam.

1.How many types of energy sources are mentioned in the text? What are they?

2.What are the disadvantages of hydro and nuclear power?

3.Why do you think the wind and the sun are called alternative sources of energy?

4.What types of energy does Viet Nam use most?

5.What does the professor think Viet Nam will use more in the future?

I. Give the correct from of the word given to complete the sentence.

-we have ............... work to do in the afternoon than in the morning (little)

-Many young people are doing ................. service (common)

-We have ................ work to do in the afternoon than in the morning (little)

-Wind power is convenient and ............. (abundance)

-At this time next week , we ............. English grammar (study)

-Many poor people in ................ countrides don't have moderm sources of energy (develop)

-In the suture , the wind and the sun .................. as the most important energy sources (use)

-My father used ............ a lot of time for the festivals (spend)

-The first symptom of the disease is a very high ............. (temperate)

-The long hot summer has led to serious water .............. (short)

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: Most of our energy we use every day comes from renewable energy sources.

A. True

B. False

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