Pressure and Density 0.0 / 5 ? PhysicsSolids, Liquids and GasesIGCSEEdexcel Created by: MegganCreated on: 25-09-13 17:43 What is the equation for density? Density = mass/volume 1 of 13 What is the unit for density? g/cm(cubed) or kg/m(cubed) 2 of 13 When do we measure the amount of volume increase when sinking an object in water? When measuing the volume of an irregular object 3 of 13 What is the equation for pressure? Pressure = force/area 4 of 13 What is the unit for pressure? Pa (pascals) or N/m(sqaured) or atmospheres 5 of 13 In which direction does pressure act in when acting in a liquid or gas? Equallly in all directions 6 of 13 Where in the liquid is the pressure equal to 0? At the surface 7 of 13 What is the equation for pressure difference in a liquid? height x density x gravitational field strength 8 of 13 What piece of equipment do we use to measure pressure difference? A manometer 9 of 13 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 10 of 13 What is the pressure of water? 1000kg/m(cubed) 11 of 13 How many pascals is 1 atmosphere worth? 100kPa 12 of 13 How could you increasure the pressure in a box? 1) More molecules in the box 2) Smaller box 3) Higher temperature 13 of 13
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