Car Tire Pump Science Project
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Written by Dee
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Saturday, 07 July 2007 |
Science Fair Project Experiment - How does the car tire pump work? Science teachers can use this as a air pressure or compressed air lesson plan.
Science Fair Project - How the tire pump works?
If you have ever pumped up an automobile tire, did you find it more difficult to work the pump when the tire was
nearly empty or when it was nearly filled ? In the tire pump which you used, was the push or the pull upon the handle the harder? Does a tire pump ever "get out-of-fix " or fail to
work?
Keeping these points in mind let us examine the diagram of an air pump. As the handle is pulled out, what happens to the
air? Why? As the handle is pushed down, what happens to the air ? Why does it not go out through the same place through which it
came in ? Why is it more difficult to push the handle down than to pull it up? Why is it more difficult to push the handle down as you continue to pump air into the tire ?
The tire pump is a very simple air compressor, but air . compressors for air brakes, pneumatic drills, sand blasts, and for
pumping air into tunnels where work is done under compressed air are built on the same principle.
Suppose the valve through which the air enters the pump should be reversed, what would happen should the nozzle be
attached to a basket ball and the pump used? This is the principle of the exhaust air pump, by which air is pumped out of a closed vessel. Do you think that
all of the air could be removed from a vessel with such a pump ? In answering this, keep in mind that however little air is in a space, it will be distributed equally, filling all the space.
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Last Updated ( Sunday, 22 July 2007 )
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