Wheels, Axles, Gears and Pulleys

A ______________ pulley is one that does not move.

• moveable

• big

• fixed

• working

A gear is a wheel with ____________.

• ridges

• teeth

• smooth edges

• valleys

This simple machine has a wheel that has a groove in it with a rope or a chain wrapped around it.

• lever

• wheel and axle

• inclined plane

• pulley

This simple machine is made of a round object that turns around a rod.

• Screw

• Wheel and axle

• Wedge

• Pulley

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A doorknob is an example of this type of machine.

• Pulley

• Lever

• Screw

• Wheel and Axle

Which of these objects uses a pulley?

• Pencil Sharpener

• Ramp

• Flagpole

• Scissors

Gears are wheels with teeth.

• True

• False

Tags

NGSS.MS-PS2-1

A crane uses ___________ to lift heavy loads.

• ramps

• pulleys

• axles

• wedges

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What kind of pulley does this picture show?

• A compound pulley

• A movable pulley

• A fixed pulley

Flagpole

• wedge
• pulley
• incline plane
• wheel and axle

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-4