Forces 5a Pressure

What is the meaning of 'pressure'?

• Force per total area

• Mass per unit area

• Force per unit area

What is the unit of pressure?

• Newtons (N)

• Pascals (Pa)

• Kilogram metres per second (kg m/s)

What is the average atmospheric pressure at sea level?

• 27, 000 Pa (27 kPa)

• 48,000 Pa (48 kPa)

• 101,000 Pa (101 kPa)

A force of 10 N acts over a surface area of 2 m². What is the pressure?

• 20 Pa

• 12 Pa

• 5 Pa

What are fluids?

• Liquids only

• Gases only

• Liquids and gases

What is the name of the force caused by different pressures on the top and bottom of an object in a liquid?

• Downforce

• Upthrust

• Weight

Which type of shoe is best for walking on snow?

• Wide shoes with a flat sole

• Narrow shoes with a jagged sole

• Shoes with a sharp, pointed heel

Which Greek letter is used to represent density?

• μ

• γ

• ρ

What happens to pressure in a liquid as its depth increases?

• It increases

• It remains constant

• It decreases

In which direction does pressure act in a liquid?

• Upwards only

• Downwards only

• In all directions