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I. Multiple Choice: Circle the letter of the correct answer.
1. What form of energy do plants give when you eat them?
a. heat b. light C. sound
2. Which of the following activities shows a change from electrical to sound energy?
a. ironing clothes b. lighting a candle C. turning a radio
3. What form of energy is possessed by the ringing bell in the church tower?
a. heat b. sound C. electrical
4. Henry throws a ball against a fence. What form of energy does the ball produce when it strikes the fence?
a. heat b. light C. sound
5. What sequence of energy transformations takes place when you switch on a lamp?
a. heat---electrical ---light b. electrical---light--heat C. light---heat---electrical
6. What form of energy is present in a glowing charcoal? a. heat b. sound C. mechanical
7. Which of the following shows a change from light energy to heat energy?
a. buzzing bees b. boiling of water c. warming of beach sand
8. What energy transformation happens in a doorbell when pressed?
a. from heat to light b. from light to heat c. from electrical to sound
9. What energy transformation takes place when you play a game on your computer?
a. From light to heat b. from electrical to light c. from heat to light
10. What form of energy can use the soup in a pot to boil?
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