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.

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 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?

 a. Read the text and underline the correct title.

(Đọc văn bản và gạch chân chủ đề đúng.)

1. The Advantages of Clean Energy Sources (Lợi ích của năng lượng sạch)

2. Comparing Different Energy Sources (So sánh các nguồn năng lượng khác nhau)

Choosing the best option for energy can be difficult. Coal power is the most popular form of energy today because coal plants aren't expensive to build. However, they can produce a lot of pollution. Other non-renewable energy sources, like natural gas, are cleaner than coal, but they still aren't good for the environment.

Countries are now moving to renewable sources of energy like wind, solar, and hydroelectric power.

Wind and solar power plants are clean and cheap to run, but they aren't cheap to build. Also, wind turbines are noisy and need windy weather to work well, and solar power doesn't work at night. Hydroelectric plants also don't cause pollution, but they can be expensive to build and affect the environment by stopping fish from moving freely. For these reasons, countries and cities usually choose a mix of energy types.

Our non-renewable energy sources such as coal, oil, and natural gas will (1) __________ out in the future. That's the (2) __________ why we are looking for alternative sources of (3) __________ which are cheap, clean and effective. These (4) __________ of energy will not cause (5) __________ or waste natural resources. (6) __________ power is one of them. It's currently the cheapest source of large-scale renewable energy.

Most wind energy is produced from turbines that have three 60-meter-long blades. The wind spins the blades, which turn a shaft connected to a generator that produces (7) __________. Now, mass production and technology advances are (8) __________ turbines cheaper. In 2000, cumulative wind capacity (9) __________the world was 17,000 megawatts. Fifteen years later, this number increased sharply to 430,000 megawatts. It is predicted that with this pace of growth, (10) in 2050 one third of the world's electricity needs will be fulfilled by wind power.

In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1)...................................., and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2)...................................... new sources of energy to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend (3)............................... the success of this search. Coal, oil and natural gas are now being used widely. (4).............................., these supplies are limited, and they are a major source of pollution. Therefore, the existing alternative energy sources must be improved or futher explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5)...................................... types of fuels. Each of these, however, has advantages and disadvantages.

II.Read the following passage carefully, then write the sentences are True ( T ) or False ( F )
A.Thousands of people in Calcutta, India, have no jobs and no proper homes. They live in homes
made of mats, boxes, and rusty sheets of tin. Many people have to camp permanently in the
railway stations, cooking, eating, sleeping and feeding their babies there. Babies are born in the
streets and peolpe die there too.
As many as seventeen out of every hundred families live in the streets, having nowhere to go.
Many of these people are sick because of a hot and damp climate.Although the government tries
hard to provide houses, schools, and medical services, it can hardly keep up with the increasing
population.
1. ___ Many people in Calcutta live in bad conditions because they have no jobs.
2. ___ Babies from poor families are taken care of by the local government.
3. ___ Seventy percent of the families in Calcutta have to live in the streets.

4. ___ The local government makes effects to help poor families but it cannot solve the problem
successfully.
5 .___ Many people in Calcutta live in good conditions because they have no jobs.
6. ___ Babies are born in the street.
7. ___ Many people are sick because they don’t have enough money to live.
B. Titanic is a romantic film, directed by James Cameron. It is about the sinking of the ship
Titanic on its first voyage. The main characters are Jack Dawson and Rose DeWitt Bukater.
Although, they are from different social classes, they fall in love. The film has a sad ending:
the Titanic sinks and more than a thousand people die in the disaster, including Jack. Critics
say it is a must-see. Many people love it.
1. ___ James Cameron is a director .
2. ___ Rose DeWitt Bukater is a crictic .
3. ___ Jack and Rose are the same classes .
4. ___ Jack dies when the ship sinks
C. Fossil fuels are non- renewabe energy sources . They include oil , coat , and natural gas .
they can be used to create energy , genergrate electricity , or drive big machinery .
Unfortunately, they are harmful to the environment . Vietnam still relies mostly on non –
renweable 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 beacause can not be built in a certain area.
Nuclear power can provide enough electricity for the world 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 electicity . It can be used to heat or cool our
houses . Although there are some diadvantages , these alternative energy sources can offer
abundant amounts of clean , safe electricity . They will be valued more and more in the
future in Vietnam.
1. __ Fossil fuels are environmentally friendly to the environment
2. __ Fossil fuels aren’t environmentally friendly to the environment
3. __ Nuclear power is alternative energy sources and dangerous
4. __ Vietnam still relies mostly on Nuclear power
5. __ Non- renewable energy sources can be converted into electicity
6. __ Solar power can be used to heat or cool our houses .
7. __Hydro power is unlimited beacause can not be built in a certain area

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?

__________________________________________________________________________

2. What is the example of fossil fuels?

__________________________________________________________________________

3. Where do we get most of electricity from?

__________________________________________________________________________

4. What do we use electricity for? 

__________________________________________________________________________

5. Where does gasoline some from?

__________________________________________________________________________

VI . Read , answer the questions . 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 ? 2. What are non - renewable energy sources 3. What is the disadvantage of hydro ? 4. What is the disadvantage of nuclear power ? 5. Why are the wind and the sun called alternative sources of energy ? 6. Will the wind and the sun be valued more and more in the future in Viet Nam ? VIII . Use suggested words write about how to save energy 1. Turn / all the lights / leave / room 2. Shut down / the computer , TV / other electrical stuff / you aren't using it 3. Not / leave / fridge door / open / cold air escapes and this use a lot of electricity . 4. Taking / a short shower / instead / a long bath can / help / save energy 5. We / should / prepare / meal / careful / turn / the stove . Let's begin with : Every day , we use much energy home . There are many things we can do at home save energy IX . Use the words given to write a paragraph about the film .. I / like / watch / different / films / but / the film / I like / most / Titanic . The film / about the sinking of the ship Titanic / its first voyage . Although the film / a sad ending / Critics / say / it / a must - see . I / think / Titanic / moving / the acting / excellent .