Force and Motion-Simple Machines

Which of the following is NOT a simple machine?

• wedge
• pulley
• lawn mower
• lever

Which is an example of doing work?

• a waiter holding a tray
• a man trying to lift heavy weights
• a girl pushing on a locked door
• a player kicking the soccer ball

What are the two forces that are applied to an object to put it in motion?

• push and pull
• push and throw
• pull and hold
• pulley and lever

What is the function of a simple machine?

• to be an inventor
• to make work easier
• to make buildings bigger
• to help us get stronger

What is the fixed point, or balance point, on a lever called?

• axle
• rope
• wheel
• fulcrum

A pulley has what components?

• wheel and axle
• rope or string and wheel

Which is an example of a wedge?

• see saw
• steering wheel
• ramp
• an ax

Which of the following is NOT an example of a screw?

• a hammer
• a lightbulb
• a jar lid
• a water bottle lid

A rake, a shovel, a fork and hammer are all examples of levers.

• TRUE
• FALSE

An elevator is an example of ______________.

• a lever
• an incline plane
• a screw
• a pulley