Simple Machines

A wheel with a groove and a rope is considered a:

• wheel and axle

• pulley

• lever

• gears

Wheels with teeth or cogs are considered:

• wheel and axles

• pulley

• lever

• gears

In a gear train when the driver is a big gear and the driven is a small gear the ___________ increases. (Large to small gear)

• Speed

• Force

In a gear train when the driver is a small gear and the driven is a big gear (small to big gear) the ___________ increases.

• Force

• Speed

A fulcrum is a:

• pivot

• bar

• weight

The fulcrum of a hockey stick is:

• Where the player moves the puck (at the bottom)

• Just above the ground

• In the middle of the hockey stick

• At the top of the handle

Friction makes work

• easier

• harder

Which produces more friction?

• rollers

• wheels and axles

A nut cracker is an example of a

• wheel and axle

• 1st class lever

• 2nd class lever

• 3rd class lever

Tweezers are an example of

• 1st class lever

• 2nd class lever

• 3rd class lever

• gears

• pulley