# 8s1a Fluids

## Quiz by neil muir

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9 questions

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- Q1which state of matter has the strongest forces of attractiongasessolidsliquidsfluid30s
- Q2what happens to the temperature when there is a change of state ?decreasesincreases then decreasesincreasesstays the same30s
- Q3what change of state happens during evaporation ?gas becomes liquidliquid turns into a gasliquid becomes solidsolid becomes liquid30s
- Q4what is the equation for calculating density ?density = mass - volumedensity = mass x volumedensity = mass / volumedensity = mass + volume30s
- Q5In terms of density, when will an object float ?when the object's density is more than waterwhen the density of water is less than the objectwhen the object's density in LESS than water30s
- Q6What causes pressure?particles moving about randomly and hitting surfacesparticles vibratingparticles being closely packed together30s
- Q7Why does a plane need a force from the engines to fly at a constant speed ?so the forces forward is more than air resistanceso the force is the same as water resistanceso the force is less than air resistanceso the force forward is same as the air resistance pushing back on plane30s
- Q8Why can a submarine go deeper than a scuba diver ?The submarine can withstand a higher pressure .30s
- Q9In terms of particles , what is a vacuum ?A apace where there are no particlesA solid with no particles30s