Pressure in a fluid
Lesson 2 / 9
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I can explain the causes of pressure in a fluid.
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The particles in liquids and gases move very quickly and randomly in every direction; they are both fluids.
Particles in liquids are very close together; the gaps between particles in gases are much larger than the particles.
The pressure at any point in a fluid is the same size in every direction.
The particles in a fluid exert pressure on a surface by colliding with it.
Pressure is calculated using the equation: pressure = force ÷ surface area.
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