Physical Science: Investigating Forces and Motion

What is a force?

• A push, pull, or twist that causes movement

• A visible object

• A type of energy

• A type of matter

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What unit is used to measure force?

• Newton

• Kilogram

• Meter

• Joule

How does gravity affect a swing that isn’t moving?

• It pulls the swing down

• It pushes the swing up

• It makes the swing move sideways

• It has no effect on the swing

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What happens to your weight on the moon compared to Earth?

• It becomes one-sixth of your weight on Earth

• It doubles

• It remains the same

• It becomes one-third of your weight on Earth

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What is a lever used for in simple machines?

• To multiply the force put into a job

• To decrease the force needed for a job

• To increase the speed of a job

• To change the direction of force

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Which of the following is NOT a simple machine mentioned in the passage?

• Lever

• Pulley

• Bicycle

• Wedge

How does a longer lever make work easier?

• By producing a greater turning force about the pivot

• By reducing the weight of the object

• By increasing the speed of the object

• By changing the direction of the force

What happens to kinetic energy when brakes are applied on a bike?

• It is converted into heat energy

• It increases

• It remains the same

• It is converted into potential energy

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What force is responsible for slowing down a bike when brakes are applied?

• Friction

• Gravity

• Magnetism

• Air resistance

What is the definition of speed according to the passage?

• Distance per unit of time

• Speed in a specific direction

• Change in velocity over time

• Force created by acceleration

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