The Effect Of Temperture On Air Pressure

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is:
1) Heat an ordinary pop can on a hot plate.
2) After about fifteen minutes take the can off the hot plate and put it upside-down in a pan of cold water.
3) Record my observations on a piece of paper.
4) Write my conclusions in my science fair logbook.

For the second experiment my procedure is:
1) Get an empty gallon milk jug at room temperature.
2) Heat to water to just before the boiling point on a hot plate.
3) Fill the milk jug about quarter of the way with hot water.
4) Put the lid on tightly
5) Wait one hour and record my observations and conclusions.

For the third experiment my procedure is:
1) Get a medium sized bottle.
2) Peel a hard boiled egg.
3) Light a small piece of paper on fire and put it inside the bottle.
4) Before the flame goes out put the pealed egg over the opening of the bottle.
5) Record my observations on a piece of paper.
6) Write my conclusions in my science fair logbook.

LOGBOOK:

02/06/99- I conducted the experiment on ...

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it was cooled so there was less air pressure inside the can, which made it collapse.
I can relate the can to our atmosphere. The heated can had high pressure and the water had low pressure just like a storm caused by high and low pressure systems. The popping sound can be related to thunder. In a real storm instead of the can crushing there would be thunder.

02/06/99-I conducted the air pressure experiment on the milk jug.

OBSERVATIONS:

Before pouring the hot water into the milk jug it had the shape of an ordinary milk jug at room temperature. After the hot water was pored into the jug, it was difficult to put the lid on because it was extremely hot. After the lid was on the milk jug ...

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