P3 Book 5 Unit 2

1. Which energy source do domestic air conditioners run on?

• Petrol
• Diesel
• Electricity
• LPG

2. ‘Coal, crude oil and natural gas are natural resources that will be used up.’

• True
• False

3. ‘Solar power is an energy source that will not be used up.’

• True
• False

4. Which of the following factors can affect the electricity use of a family? (There can be more than one answer.)

• Temperature
• Humidity
• The family members’ habits of using electricity
• Average amount of electricity use of the appliances

5. Which of the following are some ways to save energy? (There can be more than one answer.)

• Turn off the lights before we go to bed
• Turn off the television when we are not watching it
• Set the temperature of the air conditioner to very low
• Make good use of natural light

1. Which of the following is the most common way of treating waste in Hong Kong nowadays?

• Recycle waste
• Send waste to landfills
• Burn waste
• Send waste overseas

2. ‘It takes a long time for food waste and foam boxes to break down.’

• True
• False

3. Which of the following items can be recycled in Hong Kong? (There can be more than one answer.)

• Clay
• Plastic bottles
• Aluminium cans
• Old newspapers

4. Which of the ‘4Rs’ of environmental protection does the following action apply? ‘We do not use straws for cold drinks in a restaurant.’

• Reduce the use of single-use products.
• Recycle materials.
• Replace single-use products with reusable ones.
• Reuse waste materials.

5. Which of the following actions can help protect the environment? (There can be more than one answer.)

• Bring your own shopping bags.
• Buy over-packaged products.
• Buy things made of recycled materials.
• Do not buy too much food to avoid waste.