1. What object changes light energy into heat?
a. alarm clock
b. flat iron
C. lighted candle d. speaker

2. A device that converts heat energy into sound energy.
a. electric lamp
b. motorcycle c. toaster
d. whistling kettle

3. Which of the following is an example of sound energy transforming to electrical back to
sound energy again?
a. using flat iron
C. singing in a microphone
b. boiling of water
d. switching on a lightbulb

4. Which energy conversion is taking place when you clap and rub your hands
a. sound - heat
b. heat - electrical c. light - electrical d. electrical - sound

5. What transformation of energy happens to microwave oven, incubator, and light bulb
a. They transform from hight energy to sound energy to heat energy
b. They transform from heat energy to light energy to sound energy
c. They transform from electrical energy to light energy to heat energy
d. They transform from electrical energy to light energy to sound energy

6. What are the two important forces in moving objects?
a. fire and water
C. friction and fire
b. gravity and friction
d. gravity and weight

7. What do you call the invisible force that pulls everything towards the center of the Earth?
a. friction
b. magnet C. gravity
d. water

8. Which of the following is not an effect of force in an object?
a. It makes a moving object stop.
b. It makes a stationary object move.
C. Force can change its direction of a moving object.
d. Force can change its magnetic field of a moving object.

9. Where does gravity pull everything?
a. center of the sun
C. center of the earth
b. edge of the earth
d. edge of the universe

10. What do you call a push or pull exerted on an object?
a. force
b. magnetism c. gravity
d. magnetic field

pa help naman po plss​