Simple Machines

The purpose of a simple machine is to make work easier by allowing for a push or pull to occur over an increased distance.

• True

• False

Which simple machine is a wheel on an axle or shaft that is designed to support movement and change of direction?

• Wheel-and-axle

• Wedge

• Pulley

• Lever

Which simple machine consists of a sloping surface, used for raising heavy objects, or sliding objects down?

• Wedge

• Inclined Plane

• Pulley

• Screw

Why are levers useful?

• For seesawing

• Allow us to measure the force of an object

• Helps lift weight at one point of its length

• All of the above

Which of the items lifted below can be considered a wedge?

• A Pencil

• A hammer

• An axe

• Two inclined planes put together

Which simple machine is an inclined plane that is wrapped around a pole?

• Screw

• Pulley

• Wedge

• Wheel-and-axle

Why are simple machines "simple"?

• They reduce the effort required to perform a simple task. Less force can be applied.

• They are actually quite complicated.

• You can easily put two pieces of wood together.

• Splitting through wood is much faster.

Which simple machine is this?

• Pulley

• Wheel-and-axle

• Inclined Plane

• Lever

Where might a screw be used?

• A bottle cap

• A Lightbulb

• Cell Phone Charger

• All of the above

Which simple machines are present?

• Wedge

• Wheel-and-axle

• Inclined Plane

• Lever