Forces and Motion Review

Front

What is the force that pulls objects toward the center of the Earth?

Back

Gravity is the force that pulls objects toward the center of the Earth.

Front

What is a simple machine that consists of a rigid bar that pivots about a fixed point?

Back

A lever is a simple machine that consists of a rigid bar that pivots about a fixed point.

Front

What is the fixed point at which a lever moves called?

Back

The fixed point at which a lever moves is called the fulcrum.

Front

Give an example of a lever.

Back

A seesaw is an example of a lever.

Front

If a bus traveled 35 kilometers in one hour, what was the speed of the bus?

Back

The speed of the bus was 35 kilometers per hour.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

What is motion?

Back

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

Front

What is a pulley?

Back

A pulley is a simple machine that uses a wheel and a rope to lift objects.

Front

What is the difference between speed and velocity?

Back

Speed is how fast an object is moving, while velocity includes the direction of the movement.

Front

What is an example of gravity in action?

Back

An example of gravity in action is an apple falling from a tree.