Examples Of Science Fair Projects - Air Pressure And Air Weight
Tuesday, May 27th, 2008Examples Of Science Fair Projects - Air Pressure And Air Weight
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This science project is one of our examples of science fair projects where you actually proof two r
elated characteristics of air. You will prove that air has weight and that, because of the weight, air pressure is strong enough to bend a can. We are going to use the principle that as air heats up; it has a greater volume and if it is in a container some of the air will escape from the container. Then by screwing a top on the container we are going to prevent the air from going back in when the container cools down.
CAUTION: This example science fair project must be done with adult supervision as heat is used.
What you will need for this experiment:
- Large container
- A can with a screw top (you get cans of olive oil that will be the ideal can)
- Water
- Stove
- Oven mitts
- Ice
- Dish cloth
- A scale
- Note book
- Pen
- Camera
How to do this science experiment:
- For your display, it is a good idea to take a photo of the can in its original state.
- Fill the large container with water and ice and put it to one side until you need it.
- With a finely calibrated scale, weigh the can with the screw top on.
- Make a note of this weight.
- Remove the screw top.
- Put the can on the burner on the stove.
- Heat the can until it is very hot.
- Using the oven mitts, remove the can from the stove and, working quickly, screw the top on the can and place it in the cold water.
- Observe what happens, write it down and take a photo.
- When the can has cooled down, wipe it dry and weigh it.
- Make a note of the weight and take a photo.
- What has happened?
- Why do you think it happened, remember we said in the beginning that we are going to prove two things?
What happens is that the air pressure bends the can. Why can we say that? What did we do to remove air from the can so that the air pressure on the outside is more than in the inside?
The other thing that happens is that the can now weighs less. Why is that? Think of what we have done with the air in the can.
This is just one of our many examples of science fair projects. For more fun and easy examples of science fair projects visit our site Easy Science Fair Projects.