Exploring Simple Machines and Forces

Which of the following is NOT considered a simple machine?

• Lever

• Pulley

• Engine

• Inclined plane

What is the main purpose of a simple machine?

• To increase the amount of work done

• To change the direction or magnitude of a force

• To create energy

• To reduce friction

Which simple machine is used when you use a screwdriver to insert a screw?

• Pulley

• Screw

• Wedge

• Lever

A seesaw is an example of which type of simple machine?

• Pulley

• Lever

• Wheel and axle

• Wedge

Which simple machine consists of a sloping surface used to raise objects?

• Inclined plane

• Pulley

• Screw

• Wheel and axle

Which of the following is an example of a wedge?

• Knife

• Bicycle wheel

• Door handle

• Rope

Which simple machine is used to lift a flag on a flagpole?

• Lever

• Pulley

• Wedge

• Screw

The wheel and axle is best described as:

• A flat surface set at an angle

• A bar that pivots on a fixed point

• Two circular objects of different sizes attached together

• A grooved wheel with a rope

Which of the following simple machines is used in a doorstop?

• Pulley

• Wedge

• Lever

• Screw