Pressure

To calculate pressure,

• ...divide force (N) by area (m2)

• ...divide area (m2) by force (N)

• ...multiply force (N) by area (m2)

• ...add force (N) to area (m2)

The unit used to calculate pressure is ...

• Newtons (N)

• Area (m2)

• Newtons per metre squared (N/m2)

• Newtons per kilogram (N/Kg)

Pressure can be reduced if ...

• The area of an object is reduced.

• The area of an object is increased.

• The area of an object stays the same.

• The area of an object is increased and then reduced.

The mass of this earthmover is 100,000kg. Calculate its weight in Newtons (N)

The weight of this earthmover is 1,000,000N, it's area is 8m2. Calculate the pressure it exerts on the ground (in N/m2).

Spikes or studs are used in field sports because they...

• reduce pressure and reduce grip.

• reduce pressure and increase grip.

• increase pressure and increase grip.

• increase pressure and reduce grip.

Spikes or studs or studs improve grip by increasing pressure because they...

• keep the area the foot places on the ground the same.

• increase the area the foot places on the ground.

• reduce the area the foot places on the ground.

• look good.

Select the states of matter which are incompressible.

• Gases only

• Liquids only

• Solids only

• Solids and liquids.

Liquids and solids are incompressible because...

• There are large gaps between the particles.

• There are small gaps between the particles.

• There are small or no gaps between the particles.

• There are no gaps between the particles.

As you go deeper in the ocean...

• pressure decreases.

• pressure increases.

• pressure does not change.

• pressure increases and then decreases.