Lesson 5 - Fluids and Pressure

A fluid takes the shape of its container and flows freely

• true

• false

The measure of how much force is acting on a given area

• pressure

• pascal

• atmospheric pressure

• fluid

The SI unit for pressure is the...

• newton

• pascal

Water pressure decreases as depth increases

• false

• true

An upward force that fluids exert on all matter

• buoyancy force

• buoyant force

• atmospheric pressure

• pressure

Archimedes' principle states that the buoyant force acting on an object is a downward force equal to the weight of the fluid that the object displaces

• true

• false

The force of ________ causes atmospheric pressure by pulling down on the air.

• the sun

• gravity

• buoyancy

• the equator

Tags

NGSS.MS-PS2-5

Density is related to ____ and ______.

• mass, volume

• gravity, buoyant force

• volume, weight

• sinking, floating

The pressure caused by the weight of the atmosphere is called...

• gravity

• buoyant force

• pressure

• atmospheric pressure

An object exerts 360 N of force on a surface that has an area of 8.0m². How much pressure does the object exert?

• 5.625 Pa

• 45 Pa

• 70 Pa

• 45 N