Simple Machines Practice

Flagpole

• wedge
• pulley
• incline plane
• wheel and axle

Tags

NGSS.MS-PS2-1

Lightbulb

• wedge
• pulley
• incline plane
• screw

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Tags

NGSS.MS-ETS1-1

A _____ pulley only changes the direction of the force.

• movable
• fixed
• alternate

A sloping force, like a ramp, that reduces the mount of force required to lift an object.

• screw
• wheel and axle
• inclined plane

Tags

NGSS.MS-PS2-2

Why is no machine 100% efficient?

• some of the input energy is converted to mechanical energy in the environment
• some of the input energy is converted to chemical energy in the environment
• some of the input energy is converted to heat energy in the environment
• All machines can be 100% efficient

Tags

NGSS.MS-PS3-5

A ______________ is a rope or chain wrapped around a wheel. 

• wedge 
• lever 
• pulley 
• screw

Any device that makes work easier is called a ______________________.

• Joule 
• prop
• lever
• machine

Tags

NGSS.HS-PS3-3

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

A simple machine with a straight slanted surface is a(n) __________________. 

• lever
• wheel and axle
• inclined plane
• pulley