Pressure and Density

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  • Created by: Meggan
  • Created on: 25-09-13 17:43
What is the equation for density?
Density = mass/volume
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What is the unit for density?
g/cm(cubed) or kg/m(cubed)
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When do we measure the amount of volume increase when sinking an object in water?
When measuing the volume of an irregular object
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What is the equation for pressure?
Pressure = force/area
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What is the unit for pressure?
Pa (pascals) or N/m(sqaured) or atmospheres
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In which direction does pressure act in when acting in a liquid or gas?
Equallly in all directions
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Where in the liquid is the pressure equal to 0?
At the surface
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What is the equation for pressure difference in a liquid?
height x density x gravitational field strength
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What piece of equipment do we use to measure pressure difference?
A manometer
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In a manometer, what must happen to the pressure for the gas to come out at the top?
The pressure must be higher than the pressure of the atmosphere
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What is the pressure of water?
1000kg/m(cubed)
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How many pascals is 1 atmosphere worth?
100kPa
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How could you increasure the pressure in a box?
1) More molecules in the box 2) Smaller box 3) Higher temperature
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Other cards in this set

Card 2

Front

What is the unit for density?

Back

g/cm(cubed) or kg/m(cubed)

Card 3

Front

When do we measure the amount of volume increase when sinking an object in water?

Back

Preview of the front of card 3

Card 4

Front

What is the equation for pressure?

Back

Preview of the front of card 4

Card 5

Front

What is the unit for pressure?

Back

Preview of the front of card 5
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