Forces and Motion CH:11 Test

Match the following

• lever

• window shade

• pulley

• stairs

• wedge

• jar lid

• inclined plane

• axe

• screw

• scissors

Josh is pushing wood in a wheelbarrow. What 3 simple machines are in use?

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

What type of simple machine is at the bottom of a light bulb?

• lever
• wheel
• wedge
• screw

Mr. Smith uses a ramp to load a heavy box onto the back of his truck. By using the ramp, instead of just lifting the box, Mr. Smith ____________.

• needs to do less force
• does less work
• has a harder job to do
• does more work

Hammers can be used to pull nails out of wood. What type of simple machine is a hammer?

• screw
• lever
• pulley
• inclined plane

Simple machines have helped us in everyday life. What kind of simple machine is a knife?

• wheel and axle
• wedge
• screw
• pulley

The device used to raise a flag up a flag pole is an example of a 

• wheel and axle 
• lever
• inclined plane 
• pulley 

A seesaw is an example of a  

• wedge
• lever 
• inclined plane 
• pulley 

What is the center point of a lever called?

• A block 
• A Thingy
• A fulcrum
• A brick

How could I reduce the force needed to lift the load?

• move the fulcrum away from the load
• move the fulcrum closer to the load
• place the fulcrum in the middle