Simple Machines - Checking Comprehension

A ______________ is any device that helps us do work.

Work is the result of ___________ moving an object.

An inclined plane is a sloping surface that makes it easier to move an object _________.

A _____________ is a type of inclined plane used to raise an object or split an object apart.

Another type of simple machine -the screw- is used to apply tremendous force with very little _________.

The lever is simply a rigid object that pivots around a fixed point called a _____________.

There are _________ different classes of levers.

The wheel and _________ is a simple machine that helps people lift heavy loads with less effort.

A ___________ is a special kind of wheel that transfers force from one part of a machine to another.

Finally, the _________________ is a simple machine made of a wheel, a post and a rope. It makes work easier by changing the direction of force.