Science quiz

1. Which of the following is NOT a type of friction?

• 1. Static friction

• Sliding friction

• Air friction

• Magnetic friction

2. Which force always pulls objects toward the Earth?

• Magnetic force

• Muscular force

• Gravitational force

• Frictional force

3. Which of the following materials will a magnet attract?

• Plastic

• Iron

• Aluminium

• Rubber

4. What is used to reduce friction between moving parts of a machine?

• Water

• Grease or oil

• Magnet

• String

5. When you stop pedaling a bicycle, it eventually stops. Why?

• 5. Gravity pulls it down

• 5. Friction between the tyres and the road

• 5. The road is not straight

• 5. The air pushes it forward

6. Friction can both help and hinder movement.

• True

• False

7. Gravitational force acts only on Earth.

• True

• False

8. Magnets can attract all types of metals.

• True

• False

9. Friction is always harmful.

• True

• False

10. You need a force to start or stop motion.

• True

• False