UNIT 4LESSON 2

ÚTILES RECOMENDADOS: Texto del estudiante 2° Medio Cuaderno de inglés o 2 hojas en blanco. Lápiz grafito y goma. Pictionary

SECTION 1: GETTING READYWelcome back to Unit 4! We were learning about sustainability, types of pollution, causes and effects. Let’s learn about alternative sources of energy.

1. Look at the pictures and identify the types of energy. Use the word bank if you need some help.

a) Picture 1 represents biomass energy.b) Picture 2 represents ________________.c) Picture 3 represents ________________.d) Picture 4 represents ________________.e) Picture 5 represents ________________.f) Picture 6 represents ________________.

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geothermal energy solar energy hydro energy

tidal energy wind energy biomass

2. Look at the pictures again and answer some questions.

1) What types of energy are commonly used in your city?

2) What device uses the most energy in your home?

3) Which energy source would reduce the risk of global warming?

3. All types of energy have advantages and disadvantages. Name some of them by using the chart below.

Type of energy

Advantages Disadvantages

1 Geothermal energy

RealiableRapid evolution.

May produce toxic gas emissions.Sustainability issues.

2 Solar energy

3 Wind energy

4 Biomass energy

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(Source: Pictures taken from 2nd Graders Student’s Book and adapted material from the student’s book)

SECTION 2: LET’S READ

4. We all use fossil fuels, which is buried combustible geologic deposits of organic materials. Look at the chart with the list of fossil fuels materials and complete the chart with some examples.

Fossil fuels materials Examples1 Natural gas Cook, heat water, power

industrial furnaces.2 Petroleum

3 Coal

5. Read the text and answer true (T) or false (T) to each statement.

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Are we running out of energy?

Today, fossil fuels provide 85 percent of our energy. Oil powers 90 percent of the world’s transportation, and coal is the most popular fuel for generating electricity. But there are two huge problems.Firstly, fossil fuels are non-renewable because they take millions of years to form and can only be used once. If we keep using them, they will disappear. Secondly, when we burn fossil fuels, we produce polluting gases that contribute to warming the Earth’s temperature.The good news is that fossil fuels are not the exclusive energy resource. Day after day, the sun shines, the wind blows, water flows, trees grow. All these are

1 Coal is the most popular fuel for generating electricity.

T

2 Most of our energy comes from fossil fuels.3 Fossil fuels cause complicated problems to our planet. 4 Fossil fuels contribute to global warming.5 Fossil fuels are the only type of energy resource.

6. After reading the text answer some questions.

a) Why are fossil fuels important?

b) What happens when we use fossil fuels?

c) What do you think would happen if we stop using fossil fuels?

d) What can we do to stop using fossil fuels?

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Are we running out of energy?

Today, fossil fuels provide 85 percent of our energy. Oil powers 90 percent of the world’s transportation, and coal is the most popular fuel for generating electricity. But there are two huge problems.Firstly, fossil fuels are non-renewable because they take millions of years to form and can only be used once. If we keep using them, they will disappear. Secondly, when we burn fossil fuels, we produce polluting gases that contribute to warming the Earth’s temperature.The good news is that fossil fuels are not the exclusive energy resource. Day after day, the sun shines, the wind blows, water flows, trees grow. All these are

7. Let’s learn about other types of energy. Read the boxes below and match each one to the pictures. An example is provided.

2Biomass powerBiomass includes trees, grass, crops, agricultural waste, trash, garbage, and sewage. Biomass used as fuel is called biofuel. Biofuel can generate power and heat when it burns. It can also be converted into ethanol, methanol, butane, or biodiesel.

Wind powerThe current area of focus for wind power is the use of wind turbines to generate electricity. The basics are simple; when the wind blows, electricity is generated.

HydropowerHydropower energy resources have the potential to totally eliminate our need for fossil fuels.There are many ways to utilize water that are coming into use right now.Energy is obtained with a simple water turbine connected to a generator.Additionally, the electricity generated can be also used to produce hydrogen or recharge hybrid car batteries.

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Geothermal powerThere is a massive thermal energy resource that lies beneath our feet.If we dig deep into the earth at the right locations, we will find enough thermal energy to generate electricity.

8. Match the ideas from the texts. You might need to read the previous text again.

1 Biomass used as fuel is called

trees, grass, crops, agricultural waste, trash, garbage, and sewage.

2 Biomass includes 1 biofuel.3 Hydropower energy

resourcespower and heat when it burns.

4 When the wind blows we will find enough thermal energy to generate electricity.

5 If we dig deep into the earth

electricity is generated.

6 Biofuel can generate have the potential to totally eliminate our need for fossil fuels.

9. According to the text, answer true (T) or false (F).1 Biomass includes trees, grass, crops, agricultural

waste, trash, garbage, and sewage.T

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2 Biomass can create liquid biofuels such as ethanol or biodiesel.

3 Hydropower is very limited because energy is obtained with a simple water turbine connected to a generator

4 Wind power generates electricity when the wind blows.

5 We have plenty of energy resources options to generate electricity.

10.After reading about other types of energy. What types of energy could be used in your community? Why?

11. Protecting the environment and wildlife is crucial. Preserving it for future generations is our responsibility. Read the text about conservation and answer the survey. Mark your response with an X.

N° Question A lot A fair amou

nt

Not very much

Not at all

1 How much importance do you give to saving energy in your home?

2 How concerned are you 7

ConservationHaving a lot of energy resources does not mean we can waste them.Conservation and good management of natural resources will always be essential to our survival. Experts predict a catastrophic end to the oil age and, this time, they can be right. If we don’t look around for alternatives, we will run out of energy soon.

Created by Publishing Team.

about running out of energy soon?

3 Are you concerned about climate change?

4 Do you use different energy resources at home?

12. Reflect about the reading and survey. Then, answer the following question.

a) Why is the author of the text concerned about conservation?

b) Which improvements would you need to implement to make your home energy efficient?

c) How do you think you could protect wildlife and the environment?

(Source: Pictures taken from 2nd Graders Student’s Book and adapted material from the student’s book)

SECTION 3: Post READING

13. Make a mind map about the types of energy and its effects. See the example below.

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(Source: Pictures taken from 2nd Graders Student’s Book and adapted material from the Teacher’s Guide)

SECTION 4: LET’S CONSTRUCT AND APPLY OUR KNOWLEDGE

14. Look at the reasons (a to d) for growing your own vegetables. Then read the text. Which reasons are mentioned on it? Put a tick next the statements which are mentioned.

a) “It’s a good way to relax.” b) “The food tastes better when you grow it yourself.” c) “'It's cheaper than buying food in the supermarket.”

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Solar Energy(Generates

power)

Biomass(Not

environmental)

Geothermal(Deep

excavations)

Hydropower(Uses lots of

land)

Tidal(Disrupt the life cycle of certain

marine life)

Insert mind map here.

d) “It's a good way to earn some extra money.”

15. Read the text again and answer the following questions.

A) Why does Brian Wallis think people enjoy gardening?

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B) What can people learn at the Addison Road Centre, outside Sydney?

C) How did Maxwell get his land?

D) What does Maxwell do with the food they grow?

E) What is a 'dacha' in Russia?

F) What can people who live in Russian cities enjoy at their 'dacha'?

(Source: taken from Speakout pre intermediate workbook. Antonia Clare & JJ Wilson)

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16. Look at the chart with types of pollution, causes and effects. Write the type of energy that could provide solutions to reduce each type of pollution.

Types of pollution

Causes Effects Type of energy as a

possible solution

1 Air pollution Factories, fire,

cars.

Breathing

diseases.

Solar Energy

2 Water

pollution

Home trash. Death of aquatic animals.

3 Land

pollution

Deforestation,

parking lots.

Loss of fertile land, soil erosion.

4 Light

pollution

Artificial lights. Eye fatigue, sleeping disorders.

(Source: Pictures taken from 2nd Graders Student’s Book and adapted material from the Teacher’s Guide)

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SECTION 5: SPONGE ACTIVITY

17. Read the text and underline the correct alternative to complete it. Follow the example.

(Source: taken from Speakout pre intermediate workbook. Antonia Clare & JJ Wilson)

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SECTION 5: PICTIONARY

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(Source: images taken from Google generic images)

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