PS 13.1 Formative

In order to calculate pressure exerted on a surface, what quantity is divided by the surface area?

• altitude

• force

• mass

• volume

The SI unit of pressure is the

(a)  

If the air inside a balloon exerts a force of 2N on an area of 0.5 m², what is the pressure inside the balloon?

• 2 N/m²

• 4 N/m²

• 1 N/m²

• 0.25 N/m²

A pressure of 70 N/m² equals

• 7 Pa

• 70 Pa

• 700 Pa

• 7000 Pa

A substance that assumes the shape of its container.

(a)  

As altitude increases, air pressure (a)   .

Which of the following is NOT a fluid?

• oxygen

• ice

• water

• oil

Atmospheric pressure is caused by

• air currents

• the weight of the atmosphere above a particular location

• clouds

• altitude above sea level

The pressure of air at sea level is approximately

• 0 kPa

• 10 kPa

• 101 kPa

• 1000 kPa

Where would fluid pressure be the greatest in a swimming pool?

• 30 cm below the surface

• 1 m below the surface

• 2 m below the surface

• the pressure is the same at all depths