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Fluid Systems - Section 9.1 Quiz
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When you make popcorn, almost always some of the kernels don't pop. What is one reason why?
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The hard casing of the kernel may have a crack or hole that allows steam to be released before pressure can build inside
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Some kernels are empty and have nothing inside to pop
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If a kernel is too wet it cannot dry out in time to pop
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Sometimes the casing around a kernel is too thick to allow it to expand
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What is not an example of foam?
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Sea sponge
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Whipped cream
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Detergent suds
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Shaving cream
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Which body system is a natural fluid system?
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Respiratory system
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Muscular system
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Nervous system
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Skeletal system
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What is Pascal's Law?
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When force is applied to a contained fluid the pressure is increased in all parts of that fluid
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When pressure is applied to a fluid it's density will increase
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When force is applied to a fluid, the increase in energy will be expressed as heat
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When force is applied to a fluid it will compress into a solid
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What scientific fact makes hydraulic systems possible?
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Liquids cannot be compressed
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Water is easily available in solid, liquid and gas form on Earth
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Friction is a force that always results in the production of heat
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Gases can be compressed and then expanded with great force
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Which is not an example of hydraulics at work?
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Bicycle pump
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Your home shower system
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Power steering
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Jaws of Life rescue system
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What characteristic of an output piston in a mechanic's garage makes it powerful enough to lift heavy machinery?
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Surface area
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Construction materials used
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Height
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Angle of force
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What is not an example of a pneumatic system?
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Mechanic shop hoist
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Air brakes
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Dentist's drill
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Vacuum pump
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What is not an advantage of a pneumatic system over a hydraulic system?
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Pneumatic systems typically are more powerful
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Pneumatic systems are safer to use
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Pneumatic systems are reliable over a greater temperature range
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Pneumatic systems are usually less expensive
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All pumps work by
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creating areas of high and low pressure.
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creating internal friction in a fluid.
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turning water into steam.
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turning gravitational force into useful energy.