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I. Choose the letter of the correct answer.
1. What form of energy do margarines, batteries, and firecrackers contain?
A. chemical B. electrical C. light D. sound
2. What form of energy does food provide the human body?
A. chemical B. electrical C. mechanical D. nuclear 3. What form of energy is produced when the strings of a guitar are plucked?
A. electrical B. mechanical C. radiant D. sound 4. What form of energy does a running motor produce?
A. chemical B. electrical C. mechanical D. nuclear
5. What form of energy is contained in a battery or dry cell?
A. chemical energy B. electrical energy C. mechanical energy D.sound energy
6. What forms of energy do flames from a burning candle release?
A. electrical and mechanical C. light and thermal B. chemical and electrical D. heat and nuclear 7. Why can the human body perform various activities?
A. because of its fixed parts. B. because of the water it contains C. because of energy it gets from foood D. because of oxygen in the bloodstream 8. What kind of energy is most appropriate in disinfecting beddings?
A.electrical energy C. mechanical energy B. nuclear energy D. radiant energy
9. How is radiant energy used in medicine?
A. Radiant energy is used to dry clothes. B. Radiant energy is used to preserve fruits. C. Radiant energy is used to disinfect beddings. D. Radiant energy is used to destroy abnormal cells in the body.
10. What form of energy is commonly used to run different appliances at home? A. chemical energy C. mechanical energy B. electrical energy D. sound energy
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