Simple Machines and Inertia SOL Review

Machines help us work:

• efficiently

• frequently

Simple Machines have:

• few or no moving parts

• many moving parts

Which list has the 6 simple machines?

• lever, pulley, wheel and axle, screw, wedge, inclined plane

• lever, doorknob, wedge, ramp, pulley, bolt

• seesaw, screw, fulcrum, axle, pulley, lever

• wedge, pulley, lever, bolt, wheel, ramp

A lever is used to lift or move things. Which is NOT a lever?

• shovel

• broom

• ramp

• bottle opener

• hammer

An inclined plane has a slanted surface. Some are smooth and others have steps. Which is NOT an inclined place?

• stairs

• ramp

• ladder

• roof

• knife

On a wheel and axle, the wheel is connected to a center point called an axle. Which is NOT a wheel and axle?

• doorknob

• screwdriver

• pencil sharpener handle

• hammer

• bike pedal

A wedge is made of two inclined planed joined with a sharp edge for cutting or spreading things. Which is NOT a wedge?

• knife

• broom

• axe

• needle

• nail

A screw is a twisted incline plane. A screw:

• can be used to hold two pieces of wood together

• is used to cut or split things

A pulley can be used to:

• hoist a flag

• tow a car

• both

A machine that is a combination of two or more simple machines is a:

• compound machine

• complex machine