P11 0.0 / 5 ? FunPhysicsFunNone Created by: sotes003.302Created on: 19-04-19 13:14 Properties of Gas in a container - Fast moving particles / Many collisions with walls and other gas particles / Collisions with container walls exert a small force (normal) 1 of 13 What are Fluids - Gases or Liquids 2 of 13 Pressure (Pa or N/m²) = Force / Area 3 of 13 The Pressure in Earth's Atmosphere - Air and gas particles are at a high density at the earth's surface and a low density the higher up you are in the atmosphere 4 of 13 At Earth's surface, there are a greater number... Of gas particles in a given volume 5 of 13 Liquid Pressure - The Lower down in the container of Liquid, the higher the liquid pressure / High pressure at bottom, low pressure at top 6 of 13 Typical water pressure experiment - Holes in a large water bottle at different heights / As water leaves the holes, it sprays further from the bottom hole 7 of 13 Pressure (Liquid) = Height of column * Density * Gravity 8 of 13 As the depth of water increases... There is a greater weight of water acting downwards causing an increase in pressure 9 of 13 The Greater the density of the liquid... The greater the pressure 10 of 13 For an object to Float - The force of upthrust must be equal to the objects weight / If the upthrust is less than the weight of the water the object will sink 11 of 13 The size of the force of upthrust = The weight of water displaced by the object 12 of 13 If an object can displace its own weight in water... The upthrust will equal the object's weight and the object will float 13 of 13
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