How many different types of simple machines are there?

• 5

• 6

• 7

• 8

A slanting surface connecting a lower level to a higher level.

• screw

• wedge

• inclined plane

• lever

Tags

NGSS.MS-PS2-2

A stiff bar that rests on a support called a fulcrum, used to raise or lower a load.

• screw

• wheel and axle

• inclined plane

• lever

Tags

NGSS.MS-PS2-1

A grooved wheel with a rope or cable around it.

• pulley

• wheel and axle

• inclined plane

• lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An inclined plane wrapped around a pole.

• pulley

• wheel and axle

• screw

• lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An object with at least one slanting side ending in a sharp edge.

• screw

• inclined plane

• wedge

• wheel and axle

A circular device with a rod through the center.

• wheel and axle

• pulley

• inclined plane

• wedge

Tags

NGSS.MS-PS2-1

A slide, stairs, escalators, and ramps are all examples of:

• levers

• wedges

• wheel and axles

• inclined planes

A nutcracker, seesaw, tweezers, and a bottle opener are all examples of a:

• lever

• wedge

• screw

• wheel and axle

Mini blinds, tow truck, crane, and flag pole are examples of a:

• lever

• wheel and axle

• pulley

• screw