Fluids and Viscousity Flashcards

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1
Q

What is a force?

A

Anything that causes a change in the motion of an object.
A push or pull.

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2
Q

What are balanced forces? (2 points)

A

Equal in strength, no movement.

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3
Q

What are unbalanced forces? (two points)

A

Unequal in strength, cause a change in speed or direction.

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4
Q

Does mass stay the same anywhere in the universe?

A

Yes

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5
Q

What is mass measured in?

A

Measured in kilograms.

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6
Q

What does weight measure?

A

A measure of the push or pull acting on an object.

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7
Q

How do you measure weight?

A

Measured in Newton.

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8
Q

What is buoyancy?

A

Buoyancy is the force that pushes an object up when it’s in a fluid.

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9
Q

High buoyancy = _______________

A

High buoyancy = something that floats in water.

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10
Q

Neutral Buoyancy = _________________

A

Neutral Buoyancy = something that floats in the middle (neither sinks or float)

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11
Q

Negative buoyancy = ________________

A

Negative buoyancy = something that sinks in water

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12
Q

If the thing you put in water is heavier than the water itself, what will happen?

A

The object will sink.

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13
Q

How do you find the average density?

A

To find the average density you must divide the total mass of all substances that make up an object divided by the total volume.

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14
Q

What is pressure?

A

The force acting in a certain area of surface.

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15
Q

the larger the force the ________ the pressure

A

the larger the force the greater the pressure.

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16
Q

the smaller the area, the _______ the pressure.

A

the smaller the area, the greater the pressure.

17
Q

What is the unit for pressure?

A

Pa (Pascal)

18
Q

What are the formulas for Pressure, Force, and Area?

A

P = F/A
F = P x A
A = F/P

19
Q

What is Pascals Law?

A

When you push on a fluid, the pressure spreads evenly in all directions.

20
Q

What is hydraulics? (four points)

A
  • Hydraulics is the study of pressure in liquids.
  • Hydraulics is using a liquid to transmit force and make things move.
  • use liquids because they are incompressible
  • the pressure produces will exert in all directions equally.
21
Q

What is boyles law?

A

increasing the pressure of a fluid will decrease the volume

22
Q

High temperature = _______ the volume of a fluid.

A

High temperature = increase the volume of a fluid

23
Q

High temperature = _______ the pressure

A

High temperature = increasing the pressure