Pressure exists on surfaces, in air and in liquids. On surfaces it is calculated by dividing force by area. Atmospheric pressure decreases with height, and liquid pressure increases with depth.

What is the pressure exerted by a man standing on one leg?

Half of the pressure he exerts when standing on two legs

The same pressure as he exerts when standing on two legs

Twice the pressure he exerts when standing on two legs

The weight of a 100 N laser printer is spread over 0.5m^{2}. What is the pressure it exerts?

50 N/m^{2}

200 N/m^{2}

500 N/m^{2}

What are the correct units of pressure?

Newtons per square metre

Coulombs

Newtons

How do you calculate pressure?

Area divided by force

Force divided by area

Force added to area

What are the correct units of force?

Pascals

Which example increases pressure?

A drawing pin

Snowshoes

A long lever

Which example reduces pressure on the ground the most?

Wearing high heels

Wearing skis

Lying down flat

What states of matter are fluids?

Liquids only

Gases and solids

Liquids and gases

Where is there greatest pressure?

At the bottom of the ocean

In the middle of the ocean

At the surface of the ocean

What is upthrust?

The same as gravity

The force that water pushes floating objects up with

A type of energy