1. Waid Academy Science Energy: Energy Changes & Energy Matters

2. What is the energy change when a candle burns? 1. Chemical to light 2. Light to heat 3. Chemical to heat and light 4. Potential to heat and light 15

3. What is the energy change when you use a radio? 1. Kinetic to sound 2. Electrical to sound 3. Electrical to potential 4. Chemical to heat 15

4. Which of the following would have a change from potential to sound energy? 1. Bursting a blown up balloon 2. Clapping hands together 3. Burning coal 4. Rubbing a finger on the bench 10

5. Which energy converter changes kinetic energy into electrical energy? 1. Bulb 2. Wire 3. Motor 4. Dynamo 15

6. What energy conversion does a motor carry out? 1. Heat to electrical 2. Electrical to kinetic 3. Electrical to sound 4. Heat to sound 10

7. Which of the following is NOT a fossil fuel? 1. Coal 2. Oil 3. Gas 4. Nuclear 10

8. Why can’t we use fossil fuels for much longer? 10 1. They are in limited supply 2. They are in unlimited supply

9. Name two forms of renewable energy 1.Wind and nuclear 2.Solar and water 3.Solar and hydroelectric 4.Wave and nuclear 10

10. How could you save energy in your home? 1. Switch the TV into stand-by mode 2. Put in single glazed windows 3. Use a thermostat 4. Leave the lights on 15

11. Arrange these pictures to make a food chain 1. Human  Grass  Cow  Sun 2. Sun  Cow  Grass  Human 3. Human  Cow  Grass  Sun 4. Sun  Grass  Cow  Human 10

12. What do the arrows mean in a food chain? 1. Heat transfer 2. Energy transfer Sun  Grass  Cow  Human 10

13. Where does all energy on Earth come from? 1. Sun 2. Grass 3. Cows 4. Humans 10