Forces and Motion Review

Front

What is a force?

Back

A force is a push or pull that can change the motion of an object.

Front

What is motion?

Back

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

Front

What happens when forces are balanced?

Back

When forces are balanced, an object does not change its motion.

Front

What happens when forces are unbalanced?

Back

Unbalanced forces cause an object to start moving, stop moving, or change direction.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, like the Earth pulling us down.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces that are in contact.

Front

How does mass affect motion?

Back

More mass means more force is needed to change its motion.

Front

What is speed?

Back

Speed is how fast an object is moving, usually measured in distance over time.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its speed or direction.

Front

What is a simple machine?

Back

A simple machine is a tool that makes work easier, like a lever or pulley.