# Pressure/Density

Mind Map by , created over 5 years ago

## Mind map on units, experiments and facts on pressure and density.

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 Created by glhoward13 over 5 years ago
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Pressure/Density
1 Density
1.1 is the amount of material in a particular volume which allows us to compare the different shapes of materials in Kg/m3 or g/cm3.
1.2 Density=mass/volume
1.2.1 E.G: Aluminium; mass=110g,volume=40cm3,density=110/40=2.750
1.2.2 Mass(grams)
1.2.3 Volume(cm3)=LxWxH
1.2.3.1 Volume of a cylinder=Pi x r2 x h
1.2.3.1.1 Used when finding the volume of a liquid
1.2.3.2 Volume of a cube=l x l x l
1.2.3.3 Use Eureka can to find the volume of a uneven solid
1.2.3.3.1
1.2.4
2 Pressure
2.1 is the effect of a force spread out over an area.
2.2 Pressure= force/area
2.2.1 Pressure (N/m2) or (Pascal)
2.2.2 Force (Newtons)
2.2.3 Area (m2)
2.2.4
2.3 Pressure under water.
2.3.1 Pressure increases with depth (height) of the water, the type of water (density) and the gravitational force.
2.3.1.1 Pressure= Height x Density x Gravitational force
2.3.1.1.1 Pressure (Pa)
2.3.1.1.2 Height (m)
2.3.1.1.3 G ( 10 on earth N/Kg)
2.3.1.1.4 Density (Kg/m2)
2.4 Pressure acts in all directions.
2.5 Experiment to compare pressure in gas and liquid
2.5.1 2 syringes and a tube joining them together with air/water one side and nothing the other.
2.5.2 Gas: As the force is applied to the 1st syringe it creates pressure which pushes the air throughout the tube and into the 2nd syringe.
2.5.2.1 Liquid: The liquid acts the same as the gas but moved further because space between molecules cannot be reduced.