ความดันในของเหลว AQA Physics

What is the SI unit of pressure?

• Kg/m³

• Pa

• kg m^-3

• N m²

What is the formula for pressure?

• P = F / A

• P = F A

• P = A / F

• F = P / A

The pressure resulting from a force of 50 N exerted over an area of 5 m² is

• 10 Nm²

• 0.1 Nm²

• 10 N m^-2

• 0.1 Pa

In what direction(s) does air exert pressure?

• everywhere
• no where
• there is no pressure
• downward

When force increases...

• pressure increases

• pressure decreases

• pressure stays the same

• pressure increases then decreases

When area increases...

• pressure increases

• pressure decreases

• pressure stays the same

• pressure increases then decreases

Any substance that can easily flows and therefore can easily change shape.

• Fluid

• Liquid

• Gas

• Solid

The upward force exerted by a fluid is called the...

• buoyant force

• density force

• fluidity force

• normal force

Fluid pressure is directed

• in all directions.
• only upward.
• only downward.
• always sideways.

Fluids flow

• only when warmed up.

• from regions of low pressure to regions of high pressure.

• until evenly spread out.

• from high to low pressure.