Unit 3 Review- Motion (3rd)

Front

What is gravitational force?

Back

Gravitational force is the force that pulls objects toward each other, such as the force that pulls objects toward the Earth.

Front

What determines the strength of gravitational force between two objects?

Back

The strength of gravitational force is determined by the mass of the objects and the distance between them.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion, such as starting to move, stopping, or changing direction.

Front

Can you give an example of an unbalanced force?

Back

A girl shooting a basketball is an example of an unbalanced force because she applies force to change the ball's motion.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, making it harder to move.

Front

How do wheels help reduce friction?

Back

Wheels reduce friction by allowing an object to roll instead of slide, making it easier to move.

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What are the two main types of motion?

Back

The two main types of motion are linear motion (straight line) and rotational motion (around an axis).

Front

What is mass?

Back

Mass is the amount of matter in an object, which affects how much gravitational force it experiences.

Front

How does mass affect motion?

Back

Objects with more mass require more force to change their motion compared to lighter objects.