Simple Machines, Work, and Efficiency

What is the fixed point upon which a lever rotates?

• fulton
• fulcrum
• furmen
• falcon

Which of these is an example of a wedge?

• skateboard
• broom
• stairs
• butter knife

A screw is made up of _________ wrapped around a post or rod.

• treads
• springs
• threads
• strings

Which of these is not an example of an inclined plane?

• ladder
• stairs
• wall
• driveway

Which is an example of someone using a simple machine to do work?

• a boy runs across a football field
• a banker counts money
• a mother puchses a stroller up a ramp into a building
• a girl eats a sandwich

Which is a characteristic of simple machines?

• they run on electricity
• they take a long time to make
• they have few or not moving parts
• they are not very large

Which type of simple machine would be found on the bottom of a wagon?

• a pulley
• a screw
• a wedge
• a wheel and axle

What two parts might make a pulley?

• wheel and axle

• wheel and rope

• wheel and screw

• wheel and fulcrum

What simple machine holds things together?

• Wedge
• Screw
• Lever
• Pulley

What kind of work is made easier by the wheels of this object?

• pushing a heavy load
• lifting a heavy load
• dividing a heavy load
• holding a small load