Simple Machines

A simple machine makes work easier because it

• takes less force to move something heavy

• changes the weight of something heavy

To open a drawer you use a

• push

• pull

A man wants to look under a heavy rock. How can he lift hte rock?

• use a wheel

• use a lever

• use an inclined plane

Which of these objects is a screw?

• flagpole

• jar lid

A doorstop is a...

• wedge

• screw

• level

What simple machine is used in roller blades and shopping carts?

• lever

• wheel and axle

• pulley

What simple machine can you raise a flag with?

• A pulley

• a wedge

• a screw

What simple machine turns things

• screws

• inclined planes

• levers

Wedges are used to

• cut or split things

• close things

• hold things

When you walk up the stairs you are using an

• inclined plane

• a lever

• a wedge