Properties of Fluids

If an object sinks in a fluid, _____.

• the density of the fluid is greater than the density of the object
• the density of the fluid is less than the density of the object
• the density of the fluid is equal to the density of the object
• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

What do we call the the amount of force exerted on a certain area?

• fluid

• pressure

• buoyant force

• normal force

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

• buoyancy force

• density force

• fluidity force

• normal force

Car brakes and car jacks are examples of

• hydraulic systems
• archimedes' principle
• atmospheric pressure
• buoyancy

Tags

NGSS.MS-ETS1-1

Water pressure increases as depth increases. 

• True
• False

A fluid's resistance to flow is its

• viscosity.
• density.
• pressure.
• buoyancy.

Mass per unit volume is

• buoyancy.
• density.
• pressure.
• viscosity.

If an object has a density of 3.6 g/mL and you put it into water (density =1.0g/mL,) will it sink or float?

• sink

• float

Waste water is flowing through a sewage pipe of area 4m² , at a rate of 3m/s; What is the velocity of the water when it reaches a wider portion of the pipe of area 6m² ?

• 3m/s

• 0m/s

• 6m/s

• 2m/s

Tags

NGSS.MS-PS2-2

What is the SI unit use for hydraulic pressure?

• Kg/m³

• Pa

• Litre

• Kilometer