1. Why cant a ball roll continuously on a rough surface?
A The rough surface is not made for balls to roll.
B. The force which enables the ball to move is released.
C. The rough texture of the surface blocks the movement of the ball.
D. The rough texture of the surface permits the movement of the ball
2. A bicycle moves faster on a cemented road than on a bumpy road. Why?
A. Fnction is greater on a cemented road.
B. Friction is lesser on a cemented road. C. There is no friction on a cemented road. D. The bicycle can roll only on a cemented road.
3. Why is it difficult to climb up the stairs rather than to go down the stairs?
A. You go with gravity
C. You move upward.
B. You are against gravity.
D. You move downward.
4. Which energy transformation occurs in an electric iron?
A Heat to Light
C. Heat to Electricity
B. Light to Heat
D. Electricity to Heat
5. Many appliances you use every day change electrical energy into other forms. When you use a toaster to toast bread, electrical energy is changed to and
A Heat and Sound
B. Light and Sound
C. Heat and Light
D. Heat and Nuclear
6. When heat is released from fuel and boils the water to make steam, it turns the turbine which turns the generator. This will produce
A Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
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• D. The rough texture of the surface permits the movement of the ball.
2. A bicycle moves faster on a cemented road than on a bumpy road. Why?
• B. Friction is lesser on a cemented road.
3. Why is it difficult to climb up the stairs rather than go down the stairs?
• B. You go against gravity.
4. Which energy transformation occurs in an electric ion?
• C. Heat to Electricity
5. Many appliances you use every day change electrical energy into other forms. When you use a toaster to tosst bread, electrical energy is changed to _________ and __________.
• A. Heat and Sound
6. When heat is released from fuel and boils the water to make steam, it turns the tuberine which turns the generator. This will produce ___________.
• D. Electrical energy
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