Unit 5 global warming

(Pronunciation 1 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

Can farming affect the global temperature?

(Pronunciation 2 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

Some building materials are no longer allowed to be used.

(Pronunciation 3 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

Are you sure that these energy resources can be replaced naturally?

(Pronunciation 4 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

Coal is the dirtiest of all fossil fuels, but it's still burnt to produce electricity.

(Pronunciation 5 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

We use flowing water to produce electricity for the village.

(Pronunciation 6 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

Do you think global warming is linked to rising sea levels?

(Pronunciation 7 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

I hope that renewable sources of energy will meet our needs.

(Pronunciation 8 trang 40) (Lựa chọn nhiều đáp án) Read the sentence and choose the stressed words. Then practise saying the sentence with a natural rhythm.

There is an increase in certain greenhouse gases in the atmosphere.

(Vocabulary 1 trang 40) (Kéo thả vào chỗ trống) Complete the sentences using the correct forms of the words in the box. 1. Solid [ ___ ] like coal and wood are still used for cooking and heating. 2. Burning [ ___ ] for heating and cooking can increase indoor air pollution. 3. When trees are cut down or burnt, they [ ___ ] the carbon they store into the atmosphere. 4. Many people are not aware that [ ___ ] is a stronger greenhouse gas than carbon dioxide. 5. One of our goals is to reduce global CO₂ [ ___ ] by half in about ten years' time. 6. Carbon dioxide is a [ ___ ] gas because it traps too much of the sun's heat and stops it from escaping back into space. 7. It is important to understand the causes and effects of global [ ___ ] to protect our planet. 8. Soot from burning rubbish and organic [ ___ ] in open fires can cause the worst type of air pollution.

(Vocabulary 2 trang 41) (Điền khuyết chọn từ danh sách) Choose the correct word or phrase to complete each sentence. 1. [ ___ ] are heat-trapping pollutants that cause global warming. 2. Emissions of [ ___ ] from indoor stoves can cause serious health problems. 3. When black carbon falls on snow it warms its surface and the snow [ ___ ] faster. 4. Carbon dioxide and other greenhouse gases are mainly produced by human [ ___ ]. 5. [ ___ ] means cutting down or burning the trees in an area. 6. The burning of [ ___ ] can kill useful soil bacteria and make the soil poorer. 7. [ ___ ] energy is important to our future as it is clean and sustainable. 8. Increase in temperatures can add more water to oceans, which can lead to a rise in [ ___ ].

(Vocabulary 3 trang 41) (Điền khuyết chọn từ danh sách) Choose the best answers to complete the sentences. 1. Global warming is the [ ___ ] in the earth's temperature caused by greenhouse gases. 2. How do greenhouse gases [ ___ ] heat in the earth's atmosphere? 3. The greenhouse [ ___ ] is the gradual warming of the earth's surface. 4. Do you think [ ___ ] global temperature rise to 1.5°C is possible? 5. Countries should switch [ ___ ] clean sources of energy. 6. Forests are useful as they [ ___ ] CO₂ from the atmosphere and slow global warming. 7. Ending deforestation will be an [ ___ ] way to limit global warming. 8. Methane is [ ___ ] for more than 30 per cent of global warming from human activities.

(Grammar 1 trang 41-42) (Điền khuyết chọn từ danh sách) Choose the correct forms of the verbs to complete the sentences. 1. [ ___ ] that Mai is interested in environmental issues, Mike bought her a book about global warming. 2. [ ___ ] badly by soot produced by their old coal stove, they decided to switch to an electric stove. 3. [ ___ ] for his classmates, Tuan made some changes to their presentation on deforestation. 4. [ ___ ] in open fires, rubbish and organic waste produce a great amount of black carbon. 5. [ ___ ] by students' interest in climate change, the Green Club members organised many activities to raise awareness of the issue. 6. When [ ___ ] down, trees release a lot of carbon dioxide into the atmosphere. 7. [ ___ ] research on climate change, Mike became interested in environmental studies. 8. [ ___ ] widely for cooking and heating, sunlight and wind can reduce use of fossil fuels.

(Grammar 2.1 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

Black carbon traps sunlight and sends it back into the air as heat.

(Grammar 2.2 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

When fossil fuels are burnt for energy, they release CO₂ and other greenhouse gases.

(Grammar 2.3 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

Some farmers burn crop waste and kill the useful bacteria living in the soil.

(Grammar 2.4 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

Mr Viet is a geography teacher, so he knows a lot about climate change.

(Grammar 2.5 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

Many buildings were hit by the heavy storm and got seriously damaged.

(Grammar 2.6 trang 42) (Lựa chọn) Choose the best rewritten sentence using a present or past participle clause.

When farmers cut down forests to make space for farm animals and crops, they contribute to global warming.

(Grammar 3.1 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. Black carbon falls on the surface of snow or ice, speeds up the melting process. Incorrect word: [ ___ ]. Correction: [ ___ ].

(Grammar 3.2 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. Sea levels will continue to rise if global warming is not limiting. Incorrect word: [ ___ ]. Correction: [ ___ ].

(Grammar 3.3 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. Flooding during the heavy rain, our house took a week to dry up. Incorrect word: [ ___ ]. Correction: [ ___ ].

(Grammar 3.4 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. If carbon emissions reduced, the impact of global warming will be less serious. Incorrect phrase: [ ___ ]. Correction: [ ___ ].

(Grammar 3.5 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. Affecting by climate change, some regions are experiencing extreme heat. Incorrect word: [ ___ ]. Correction: [ ___ ].

(Grammar 3.6 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. If we using more renewable energy, the price of natural gas and coal will go down. Incorrect word: [ ___ ]. Correction: [ ___ ].

(Grammar 3.7 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. To be a powerful greenhouse gas, methane causes nearly a third of today's warming from human activities. Incorrect phrase: [ ___ ]. Correction: [ ___ ].

(Grammar 3.8 trang 42) (Điền khuyết chọn từ danh sách) There is a mistake in the sentence. Find the mistake and choose the correct correction. Been cut down or burnt, trees release the carbon they store into the atmosphere as CO₂. Incorrect phrase: [ ___ ]. Correction: [ ___ ].

(Reading 1 trang 43) (Kéo thả vào ô trống) Read the text. Match the headings (A-F) below with the paragraphs (1-4). There are TWO extra headings. (A) Hopes for the future (B) Methane emissions in Canada and Brazil (C) The cow mask and its uses (D) Efforts to reduce methane emissions (E) Keeping cows healthy (F) Cows, methane, and global warming Methane-catching masks for cows 1. There are more than one billion cows in the world, and cow farming is a large source of methane emissions. This colourless and odourless gas is much more powerful than CO₂ at warming the earth. 2. Farmers and companies are developing solutions for decreasing cows' methane emissions. In Canada and Brazil, farmers started adding a special ingredient to their animals' feed to reduce cows' methane production. In New Zealand, scientists are working on a vaccine that can cut methane emissions. Rather than stopping methane emissions, a UK company has designed face masks to catch the gas before it is released. 3. The masks will allow cows to continue their normal diet, but will turn methane into CO₂ and water. They can fit comfortably on the cow's head and can be adjusted to different head sizes. Sensors on the masks can notice when methane comes out of the cow's mouth and provide the percentage of the gas. This information can also be useful for farmers who can use it to identify the early signs of disease. For example, if a cow eats less, but produces more methane than usual, it may have a health problem. 4. It is predicted that the need for beef and dairy products will go up in the coming years. The company developing the methane-catching masks hopes that farmers will start using their invention, which will slow down global warming. Correct heading: 1. [ ___ ] ; 2. [ ___ ] ; 3. [ ___ ] ; 4. [ ___ ]

(Reading 2 trang 44) (Điền khuyết chọn từ danh sách) Read the text and choose the best answers. Renewable energy is the future Most of our energy comes from fossil fuels. Burning them increases the amount of greenhouse gas [ ___ ] in the atmosphere. If we continue to use fossil fuels the way we do now, we will soon run [ ___ ] of them. Fortunately, we no longer have to depend only on fossil fuels like oil, coal, and natural gas. We can use renewable energy from sources such as wind, rain, waves, and sunlight, which can be replaced [ ___ ]. In addition, such energy has a low [ ___ ] impact. Renewable energy used to be very expensive. In recent years, [ ___ ], it has become cheaper and easier to produce thanks to technological advances. Wind energy is one of the [ ___ ] and most sustainable type of energy. It does not release carbon emissions and is entirely renewable as there will always be wind. Solar power is the most [ ___ ] source of renewable energy. It exists in large quantities and is freely available. It is also completely renewable as the [ ___ ] will keep on shining. Hydropower, a form of renewable energy that uses the force of fast-moving water to produce electricity, is even more reliable than solar or wind power. There are other types of renewable energy available. In the future, we will need to use more renewable energy [ ___ ] to meet our energy needs and reduce the [ ___ ] impact of global warming.

(Speaking 1 trang 45) (Điền khuyết chọn từ danh sách) Complete the conversations by choosing the best answers. Then practise reading them. 1. Nam: If I [ ___ ], I wouldn't burn the dry leaves in the garden. Breathing in smoke can hurt your eyes and make you sick. Mike: [ ___ ] I'd better put out the fire. 2. Mark: Dad, [ ___ ] for the falling tree! Dad: Oh no! I nearly got hit. [ ___ ] for the warning. 3. Nam: [ ___ ] head. The ceiling is very low. Mai: Don't worry. I'm [ ___ ]. 4. Doctor: I must [ ___ ] that the treatment will have side effects. Patient: I understand. [ ___ ] for letting me know. 5. Mark: I [ ___ ] a coal stove inside the house if I were you. Burning coal can cause indoor air pollution. Mai: Oh, really? I [ ___ ] that.

(Speaking 2 trang 45) (Kéo thả vào chỗ trống) Complete the short talk about why we should use renewable energy. I think we should switch to using renewable energy for the following reasons. First, this form of energy is very [ ___ ]. When used, it doesn't release any greenhouse gases or black carbon. This means that it does not [ ___ ] the air, water, or soil. The second reason for switching to renewable energy is that fossil fuels will soon be [ ___ ]. On the other hand, renewable energy comes from natural resources that will never [ ___ ]. Finally, there are many renewable energy sources such as the sun, wind, or falling water. They are freely available and [ ___ ], and I believe that in the future they will fully replace fossil fuels.

(Writing 1.1 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

Bioenergy as a form of renewable energy comes from natural sources.

(Writing 1.2 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We can produce bioenergy from food waste, manure, and other organic substances.

(Writing 1.3 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

Bacteria break down these organic substances, and methane is released.

(Writing 1.4 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We collect methane and then use it to produce electricity and heat.

(Writing 1.5 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We can also make methane into biomethane, called renewable natural gas (RNG).

(Writing 1.6 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We can use renewable natural gas (RNG) as a vehicle fuel.

(Writing 1.7 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We use bioenergy, and this limits the amount of methane released into the air.

(Writing 1.8 trang 46) (Lựa chọn) Choose the sentence which has the closest meaning to the original one.

We can reduce our dependence on fossil fuels by using bioenergy.

(Writing 2.1 trang 46-47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

Wave energy / be the energy / come from ocean waves.

(Writing 2.2 trang 46-47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

Most ocean waves / be formed as wind / blow over the ocean surface.

(Writing 2.3 trang 46-47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

Wave power / be turned into electricity / use special equipment / place on the ocean surface.

(Writing 2.4 trang 46-47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

height, length, / speed of waves determine / energy production.

(Writing 2.5 trang 47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

Oceans cover nearly two thirds / earth's surface, so wave energy / be widely available.

(Writing 2.6 trang 47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

In addition, this type of energy / be very clean because / not release CO₂ / any harmful gases.

(Writing 2.7 trang 47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

Wave energy / be also renewable and reliable, / never run out as there / always be waves and wind.

(Writing 2.8 trang 47) (Lựa chọn) Choose the sentence that is best written from the words and phrases given.

In short, wave energy / be renewable and / have fewer effects / the environment.

(Writing 3 trang 47) (Trả lời tự luận)

Look at the incomplete leaflet. Write two paragraphs of 60-75 words each to complete it. Use the suggested ideas in 1 and 2 to help you.