1. What form of energy does a glue gun produce when turned on?
A. heat C. wind
B. light D. motion
2. What energy change takes place when you switch on a lamp shade?
A. electrical to heat C. electrical to chemical
B. electrical to light D. electrical to mechanical
3. Which of the following devices produce both heat and light?
A. hair iron C. electric stove
B. floor polisher D. electric fan
4. Why is electricity used by people? It ________.
A. is expensive C. is available anywhere
B. can be easily used D. can be changed into other forms
5. Which of the of the following practices show conservation of electricity?
A. Iron clothes every day. C. Keep lights on when sleeping.
B. Use incandescent bulbs. D. Turn off lights when not in use.