Simple Machines and Forces Quiz

A lever is a simple machine that helps lift or move objects using a pivot point.

• True

• False

A screw is an example of an inclined plane wrapped around a cylinder.

• True

• False

A pulley decreases the amount of force needed to lift an object but cannot change the direction of the force.

• True

• False

Air resistance acts in the same direction as an object's movement.

• True

• False

A streamlined shape helps reduce water resistance, allowing boats and swimmers to move faster.

• True

• False

A parachute increases air resistance, helping a skydiver land safely.

• True

• False

The upthrust force is the upward force exerted by a liquid on an object placed in it.

• True

• False

A metal spoon floats in water because it has high buoyancy.

• True

• False

According to Archimedes' Principle, an object will float if the weight of the water it displaces is greater than its own weight.

• True

• False

Friction always helps objects move faster.

• True

• False