Unit 2: Energy, Force, & Simple machines

What is energy?

• The ability to do work
• Heat and Electricity
• A force that causes motion
• None of these

Name this simple machine.

• Lever
• Wedge
• Pulley
• Inclined Plane

Name this simple machine. 

• Inclined Plane
• Lever
• Pulley
• Wedge

Which choice is an example of a lever?

• Axe
• Seesaw
• Bottle Cap
• Tunnel

Which choice is an example of a pulley?

• Axe
• Seesaw
• Crane 
• Tunnel

Which choice is an example of an inclined plane?

• A ramp
• Seesaw
• Bottle Cap
• Ferris Wheel 

A motor will make electrical energy change into 

• motion energy
• chemical energy
• mechanical energy
• nothing

What type of simple machine would you find on the bottom of a car?

• Inclined Plane

• Pulley

• Wheel and Axle

• Wedge

When you rub your hand heat energy is generated because of _____

• Magnetism

• Muscular force

• Electrostatic force

• Friction

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

• magic
• friction
• smoke
• input