Science Unit # 3 Force & Motion Review

Front

What is force?

Back

Force is a push or pull on an object that can cause it to move, stop, or change direction.

Front

What is motion?

Back

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

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, such as the Earth pulling objects toward its center.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it comes into contact with another surface.

Front

What is a spring scale?

Back

A spring scale is a tool used to measure force, typically in units of newtons, by the amount a spring stretches.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

Unbalanced forces are not equal and can cause an object to start moving, stop moving, or change direction.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the more force is needed to move it.

Front

What is a hypothesis in an experiment?

Back

A hypothesis is a testable prediction about the outcome of an experiment.