Simple Machines #3

When a force is used to move an object, it is called...

• tiring

• power

• work

• watt

A simple machine is...

• made up of few or no moving parts.

• Made up of no moving parts.

• Made up of two or more moving parts.

• something that requires electricity to use.

What is a gear?

• A wheel and axle with a smooth surface.

• A wheel with teeth that moves another wheel with teeth.

• A wheel with teeth that can only move by itself.

• Something that is covered with tire rubber.

In a gear system, the wheel that moves first is called the...

• Torque

• Follower gear

• Idler Gear

• Leader gear

In a gear system with only two gears, the last gear is the...

• Late gear

• Follower gear

• Idler Gear

• Leader gear

In a three gear system, the middle gears are called...

• Middle gears

• Follower gears

• Idler Gears

• Leader gears

Leader gears are also known as... (check all that apply)

• Driver gears

• Output Gears

• Follower gears

• Input gears

Follower gears are also known as... (check all that apply)

• Driven gears

• Output Gears

• Leader gears

• Input gears

In a two gear system, if the leader gear moves clockwise, the follower gear moves...

• Counter-clockwise

• Clockwise

• It doesn't move

A pulley is made up of a...

• Rope

• Wheel and Axle

• Rope and a wheel and axle

• Rope and a load