Motion- Energy (simple machines, circuits) #4

Any device that makes work easier is called a ______________________.

• Joule 
• prop
• lever
• machine

No machine in existence has 100% efficiency due to ____________________.

• magic
• friction
• smoke
• input

Which of these is an example of a wedge?

• skateboard
• broom
• stairs
• butter knife

Stairs are which type of simple machine?

• wedge
• pulley
• inclined plane
• wheel and axle

A light bulb is an example of which simple machine?

• wedge
• pulley
• incline plane
• screw

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Thermal

At which point is potential energy greatest

• W
• X
• Y
• Z

Which simple machine is this an example of?

• wedge
• inclined plane
• lever
• pulley

This image is an example of which simple machine?

• inclined plane
• screw
• wheel and axle
• pulley

Which simple machine do these object represent?

• pulley
• screw
• wedge
• wheel and axle