3rd grade Objects and Motion - Randall

Front

What is a balanced force?

Back

A balanced force is when two forces acting on an object are equal in size but opposite in direction, causing the object to stay still or move at a constant speed.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when two forces acting on an object are not equal, causing the object to accelerate or change its motion.

Front

What is speed?

Back

Speed is the rate of motion, or how fast something is moving.

Front

What is direction in motion?

Back

Direction is a straight path that something could move along.

Front

What is friction?

Back

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

Front

What happens when you slide down a slide?

Back

You slide down a slide because of the force of gravity and the amount of friction between you and the slide.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the Earth pulling you down.

Front

What is motion?

Back

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

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What is an example of balanced forces?

Back

A car parked on the side of a hill is an example of balanced forces.