Working with machines

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

What two simple machines make up scissors?

• wheel and axle
• lever and wedge
• wedge and inclined plans
• inclined plane and lever

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

A elevator is a pulley system. How does an elevator make work easier?

• It changes the amount of force needed
• It changes the type of force needed to lift the load
• It changes the direction of the force needed to do work
• It changes the weight of the load on which work is to be done. 

What kind of simple machine is a ramp?

• pulley
• screw
• lever
• inclined plane

What type of inclined plane holds things together?

• ramp
• wedge
• screw
• pulley

What type of work would a pulley help a person to do?

• cut food
• make a seesaw
• lift a car engine
• hold pieces of wood together

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

• wheel and axle
• wedge
• screw
• pulley

There are six major types of simple machines. Which of the following are all simple machines?

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

• wheel and axle, screw, light, rope

• magnet, wedge, inclined plane, bow and arrow

• motor, inclined plane, wheel and axle