Compare energy resources for generating electricity

Question 1

In one year a country generated 200 TWh of electricity. Renewables supplied (TWh): wind 56, solar 30, hydroelectric 8. What percentage of the electricity came from these renewables?

Answer %

Question 2

Why is a gas power station useful even in a grid with lots of renewables?

• A. It works without fuel
• B. Gas is renewable
• C. It produces no carbon dioxide
• D. It can be started up quickly to meet sudden demand

Question 3

Is this energy resource renewable or non-renewable: oil?

• A. renewable
• B. non-renewable

Question 4

In one year a country generated 300 TWh of electricity. Renewables supplied (TWh): wind 63, solar 21, hydroelectric 30. What percentage of the electricity came from these renewables?

Answer %

Question 5

Nuclear power stations release very little carbon dioxide while running. What is a main disadvantage?

• A. They cannot generate much electricity
• B. They produce acid rain
• C. They only work when it is sunny
• D. Radioactive waste must be stored safely for a very long time

Question 6

Is this energy resource renewable or non-renewable: solar?

• A. renewable
• B. non-renewable

Question 7

In one year a country generated 300 TWh of electricity. Renewables supplied (TWh): wind 69, solar 39, hydroelectric 12. What percentage of the electricity came from these renewables?

Answer %

Question 8

Why is a gas power station useful even in a grid with lots of renewables?

• A. It produces no carbon dioxide
• B. It works without fuel
• C. Gas is renewable
• D. It can be started up quickly to meet sudden demand

Question 9

Is this energy resource renewable or non-renewable: hydroelectric?

• A. renewable
• B. non-renewable

Question 10

In one year a country generated 200 TWh of electricity. Renewables supplied (TWh): wind 48, solar 18, hydroelectric 10. What percentage of the electricity came from these renewables?

Answer %

Question 11

Why are large batteries and pumped hydro storage being built alongside renewables?

• A. To store surplus energy and release it when demand is high or generation is low
• B. To replace transmission lines
• C. Because renewables need batteries to start
• D. To make renewables produce more carbon dioxide

Question 12

Is this energy resource renewable or non-renewable: nuclear fuel (uranium)?

• A. renewable
• B. non-renewable

Question 13

In one year a country generated 250 TWh of electricity. Renewables supplied (TWh): wind 42.5, solar 35, hydroelectric 17.5. What percentage of the electricity came from these renewables?

Answer %

Question 14

Nuclear power stations release very little carbon dioxide while running. What is a main disadvantage?

• A. They produce acid rain
• B. They cannot generate much electricity
• C. They only work when it is sunny
• D. Radioactive waste must be stored safely for a very long time

Question 15

Is this energy resource renewable or non-renewable: oil?

• A. renewable
• B. non-renewable

Question 16

In one year a country generated 500 TWh of electricity. Renewables supplied (TWh): wind 80, solar 40, hydroelectric 40. What percentage of the electricity came from these renewables?

Answer %