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Grade 8 Fluids

Grade 8 fluids (density, viscoscity, buoyancy, hydraulics, pneumatics)

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Quiz Questions And Answers

In what states of matter can you find fluids?

Solids, gases and liquids
Gases and solids
Gases and liquids
Liquids and solids

An important characteristic of fluids is that they can flow. Fluids can do this because..

Particles in fluids are slippery
Particles in fluids can move around each other
Particles in fluids have a coating

Gases are more compressible than liquids because...

The particles in gas are more attracted to each other
The particles in gas are smaller
The particles in gas are farther apart

Water is ________________ oil.

Denser than
Less dense than
Has the same density as

The particles in water are ____________ oil

Farther apart than in
The same as in
Closer together than in

Viscosity is caused by the ...

Thickness of a fluid
The attraction between the particles in a fluid
The spaces between the particles in a fluids

If an object with a density of 2g/mL, is placed in a water tank and displaces 10mL of water, what is the mass of the object?

20g
5g
15g

If 2 objects with the same mass are placed into water tanks...-object A displaces 10mL of water-object B displaces 15mL of waterWhich object is more dense?

Object A
Object B

Hydraulics and pneumatics are very similar. How are they different?

Hydraulics uses water, pneumatics uses a gas
Hydraulics uses a liquid, pneumatics uses a gas
Hydraulics uses a gas, pneumatics uses a liquid
Hydraulics uses a liquid, pneumatics uses a solid

Which would be easier?

Holding a heavy object up on land
Holding a heavy object in water
They're both the same, it depends on the arm
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