Simple Machines and Force and Motion Vocab

An object that changes a force.

• lever

• inclined plane

• simple machine

simple machine made up of two inclined planes.

• wedge

• lever

• pulley

Stiff bar that forces freely on a fixed point.

• lever

• wedge

• inclined plane

A rope fitted around the rim of a fixed wheel.

• lever

• pulley

• wedge

Pushes or pulls that cause objects to change their motion.

• force

• motion

• gravity

A force that pulls object's toward each other.

• gravity

• wheel and axle

• screw

A force that slows or stops motion between two surfaces.

• gravity

• force

• friction

A change in an object's position as compared to objects around it.

• motion

• pulley

• simple machine

Two cylinders that turn on the same axis.

• wheel and axle

• pulley

• inclined plane

Inclined plane wrapped around a post.

• inclined plane

• screw

• pulley