Simple Machines Quiz

What type of simple machine is a seesaw?

• pulley

• screw

• lever

• wheel

How does a pulley make work easier?

• By reducing the amount of force needed to lift an object

• By increasing the distance the object needs to be lifted

• By increasing the amount of force needed to lift an object

• By making the object heavier

Give an example of a wheel and axle in everyday life.

• Door knob

• Bicycle

• Fan

• Car

What is the purpose of an inclined plane?

• To make lifting objects easier

• To reduce the amount of force needed to lift an object

• To decrease the distance an object travels

• To increase the weight of an object

How is a wedge different from an inclined plane?

• A wedge is a type of inclined plane with three sloping surfaces.

• A wedge is a type of inclined plane with a rounded edge.

• A wedge is a type of inclined plane with two sloping surfaces meeting at a sharp edge.

• A wedge is a type of inclined plane with a flat surface.

What type of simple machine is a corkscrew?

• Lever

• Inclined plane

• Pulley

• Screw

Explain how a lever works.

• A lever works by using a flexible material instead of a rigid bar

• A lever works by using a rigid bar or beam that rotates around a fixed point called a fulcrum.

• A lever works by pulling instead of pushing on the bar

• A lever works by rotating around a moving point called a fulcrum

What is the function of a screw?

• To generate electricity

• To convert rotational motion into linear motion

• To play music

• To peel fruits

Describe how a pulley can change the direction of a force.

• A pulley changes the force by duplicating it.

• A pulley changes the direction of a force by redirecting it.

• A pulley changes the force by reducing it.

• A pulley changes the force by amplifying it.

How does a wheel and axle help in reducing friction?

• The wheel and axle reduce friction by increasing the surface area of contact.

• The wheel and axle have no effect on friction.

• The wheel and axle increase friction by creating more contact points.

• The wheel and axle reduce friction by minimizing contact points.