Chapter 11 Vocabulary

Non-contact force

A magnet is a non-contact force.

Force

This dog is using force to move a ball.

Gravity

In space the gravity is low so we float.

Contact force

Replacing a tire is contact force.

Acceleration

Snowboarding uses acceleration to go down the hill.

Friction

Roller skating uses friction to help you move.

Wedge

Cutting wood makes wedges.

Pulley

You can use a pulley to haul stuff to a tree house.

Inertia

Riding roller coasters causes inertia.

Screw

You use screws to keep stuff together.

Wheel and axle

Cars have wheels land axles.

Simple machine

A walnut cracker is a simple machine.

Inclined plane

A hill is an inclined plane.

Lever

You can use levers to start stuff.

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