What are their advantages and disadvantages?

When the sun shines on it, the solar panel heats the water in the pipes for the house but at night or if the weather is cloudy, it won't.; When the wind blows, the wind turbine turns and produces electricity, but if the wind stops, the wind turbine won't produce any electricity.

Lesson 3: Don't be wasteful

1. Look, say and listen. Track 60

a) Look at the picture and answer the questions.

Who is in the picture? Why isn’t Omar there?

Yasser, Rakan and their teacher. Omar is in Oxford.

What is the teacher talking about?

Climate change and saving energy.

b) Listen to the teacher. Number his questions in the correct order.

a. What will happen if we don’t stop climate change? 5
b. Is that good or bad for the Earth? 3
c. What can you remember about the lesson? 1
d. Why is it bad? 4
e. What happens when we drive cars and use electricity? 2

2. Read, ask and answer.

a) Read. Match each heading to a paragraph. Write the correct number in each box.

A. Make energy in a clean way 2
B. Energy from the sun 4
C. Energy from moving air 3
D. Don’t waste energy 1

b) Find the sentences with if in the text.

Underline the verbs in the sentences. What tenses are they?

1. use, will (If we use water and electricity carefully, we will save energy).

2. produce, will escape (If we produce energy in this way, no carbon dioxide will escape into the Earth's air).

3. stops, won't produce (If the wind stops, the wind turbine won't produce any electricity).

4. is, will cool (if the weather is cloudy, the water will cool)

c) Ask and answer.

1. Who does Nawaf Ahmed work for?

The National Energy Efficiency program.

2. Why does Saudi Arabia need to use a lot of energy?

Because it is one of the driest and hottest countries in the world.

3. Why should we use water and electricity carefully?

Because we will save energy.

4. Why is it a good idea to have ‘clean energy’?

To help stop climate changes. /So no carbon dioxide will escape into the Earth's air.

5. What are the names of the objects in pictures A and B?

A is a solar panel; B is a wind turbine.

6. What are their advantages and disadvantages?

When the sun shines on it, the solar panel heats the water in the pipes for the house but at night or if the weather is cloudy, it won't.; When the wind blows, the wind turbine turns and produces electricity, but if the wind stops, the wind turbine won't produce any electricity.

3. Say and write.

a) Talk to your partner.

2- Always Cover pans when you cook.

Why?

If you Cover pans when you cook, they boil more quickly.

3- Always Wash fruit and vegetables in a bowl.

Why?

If you Wash fruit and vegetables in a bowl, it saves water.

4- Always fix leaks.

Why?

If you fix leaks, you'll save water.

5- Always turn off taps when you brush your teeth.

Why?

If you turn off taps when you brush your teeth, it saves lots of water.

6 - Always Close your fridge quickly.

Why?

If you Close your fridge quickly, it takes less energy to cool the fridge again.

Pronunciation corner

a) Write the words in the correct column.