Types of simple machines

What is an example of a third-class lever?

• broom
• screwdriver
• screw
• wheelbarrow

What is the fixed point around which a lever is free to turn?

• fulcrum
• resistance
• effort
• lever

A wheelbarrow, pulley, and wedge are all examples of what?

• levers
• inclined planes
• wheel and axel
• simple machines

What kind of simple machine is a wheelchair ramp?

• wheel and axle
• pulley
• wedge
• inclined planes

One or two inclined planes that move when used. Thick at one end and thin at the other.

• wedge
•   screw
• wheel and axle 
• pulley

Tags

NGSS.MS-PS2-2

A wheel attached to a shaft. A doorknob is an example.

• wedge
• screw
• wheel and axle 
• pulley

An inclined plane wrapped around a straight piece of metal.

• wedge
• screw
• wheel and axle
• pulley

Tags

NGSS.MS-ETS1-1

Rope, chain, or belt wrapped around a wheel that changes the direction of an applied force. Movable or fixed types.

• wedge
• screw
• wheel and axle
• pulley

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What type of simple machine is at the bottom of a light bulb?

• lever
• wheel
• wedge
• screw

Which complex machine could be made by combining a wheel and axle and a lever?

• wheelbarrow
• axe
• shovel
• scissors