Pressure, Depth and Altitude

Select the correct equations.

• force = pressure x area

• area = force / pressure

• pressure = force / area

• force = pressure / area

• area = force x pressure

Select the units of pressure

• Pascals

• N/m

• N/m²

• Newtons

Which states of matter are classed as fluids?

• Solids

• Liquids

• Gases

Pressure in a fluid can be calculated using the equation: Pressure = mass x density x gravitational field strength. What is the value of gravitational field strength on Earth?

The diagram shows a tube with holes cut into its side. The tube is filled with water. At which hole will the pressure be the largest?

• A

• B

• C

• They will be equal

The diagram shows a tube with holes cut into its side. The tube is filled with water. At which hole will the water travel the furthest out of the tube?

• A

• B

• C

• They will be equal

A dam is built to hold water in a reservoir. Explain, in terms of pressure in a fluid, why the dam is shaped as it is.

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As altitude increases, atmospheric pressure...

• increases

• decreases

• remains constant

Explain why a balloon will pop as it floats higher up into the atmosphere.

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