PHY Quiz: Simple Machines

Name this simple machine.

• Lever
• Wedge
• Pulley
• Inclined Plane

Name this simple machine. 

• Pulley
• Wheel and Axle
• Inclined Plane
• Lever

Name this simple machine. 

• Wheel and Axle
• Lever
• Pulley
• Wedge

Name this simple machine. 

• Wheel and Axle
• Lever
• Pulley
• Wedge

Name this simple machine. 

• Screw
• Lever
• Pulley
• Wedge

Which choice is an example of an inclined plane?

• A ramp
• Seesaw
• Bottle Cap
• Ferris Wheel 

What is the center point of a lever called?

• Fulcrom
• A Thingy
• Cheese
• A Brick

How can an incline plane reduce the amount of force required to lift an object?

• increase the length of the ramp
• increase the height of the ramp
• decrease the length of the ramp

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

Pedals, handle bars and handbrakes on a bicycle

• wedges
• pulleys
• incline planes
• levers