simple machines revision

An axe(斧子) is an example of a______.

• screw

• pulley

• wedge

• inclined plane

A seesaw is an example of a  ______.

• pulley

• lever

• wedge

• screw

Which is not a type of simple machine?

• spring

• wedge

• screw

• pulley

A flat sloping（倾斜的） surface that connects lower and higher elevations（高度）. It makes raising objects easier.  

• pulley

• screw

• wedge

• inclined plane

This picture is an example of a _________.

• wedge

• lever

• wheel and axle

• screw

What simple machine can be used to split things apart and also it can hold open a door?

• pulley

• screw

• wedge

• inclined plane

Name this simple machine._________

What is the fixed point upon which a lever rotates?

• fulton

• falcon

• fulcrum

• furmen

Which of these is an example of a wedge?

• broom

• butter knife

• skateboard

• stairs

What two parts might make a pulley?

• wheel and fulcrum

• wheel and wire

• wheel and axle

• wheel and screw