Simple Machines 2

A _______________ is a wheel with a line wrapped around it.

• wheel and axle
• lever
• pulley
• wedge

A ___________________ is made of a wheel and an axle joined together.

• pulley
• wheel and axle
• lever
• inclined plane

What does a pulley do to the force acting on an object?

• nothing
• changes its direction
• keeps the direction the same
• makes it harder to lift

All of the following are examples of a wheel and axle except....

• salad spinner
• door knob
• faucet
• hockey stick

To be a simple machine, the wheel and axle must turn together.

• true
• false

A pulley does not change how work is done.

• true
• false

An _____________ is the bar on which the wheel turns.

• axle
• lever
• inclined plane
• fulcrum

Groups of pulleys are used to lift ____________ loads.

• light
• heavy
• tall
• short

Adding pulleys will _________________ the force needed to do the work.

• raise
• lower

In a faucet, the _______________ is the wheel.

• axle
• handle
• water
  water
• sink