Simple Machines

Work is

• energy from the sun
• a force that moves an object
• a type of machine
• a force that pulls you towards the Earth

What type of simple machine is found on the cap of a pickle jar?

• lever
• inclined plane
• screw
• wheel and axle

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  simple machine is found on the head of an ax?

• wedge
• lever
• pulley
• screw

The seesaw is an example of which simple machine?

• incline plane
• wedge
• lever
• pulley

The bottle cap is an example of which simple machine?

• inclined plane
• wedge
• screw
• lever

This picture is an example of a _________.

• pulley
• wedge
• wheel and axle
• screw

A machine with few or no moving parts is called a ______.

• machine
• compound machine
• simple machine
• work