Pressure | Exit Quiz | Oak National Academy

Which of these will increase the pressure acting on a surface?

• Increasing the size of the force.

• Decreasing the size of the force.

• Increasing the area the force acts over.

• Decreasing the area the force acts over.

Answer explanation

The pressure on a surface is the force per unit area, so increasing the force increases the pressure as does decreasing the area.

Which of these are units of pressure?

• newtons

• newtons per centimetre

• pascals

• newtons per square metre

• newtons per square centimetre

Answer explanation

Both newtons per square metre and newtons per square centimetre are units for pressure. Pascals is also a unit named after a scientist.

Which of these is the same pressure as 100 000 Pa?

• 0.5 Pa

• 2.0 Pa

• 5000 Pa

• 20 000 Pa

• 200 000 Pa

Starting with the largest, sort the following into order of pressure.

• A force of 5000 N acting over an area of 1 square metres.

• A force of 5000 N acting over an area of 2 square metres.

• A force of 6000 N acting over an area of 3 square metres.

• A force of 2000 N acting over an area of 50 square metres.