Question:
How does air pressure affect things?
Hypothesis:
Air pressure will not stop the ruler going up when we hit it.
Equipment:
1
sheet of A3 paper. 1 ruler.
Method:
Place the ruler on a table with about 2 cm
sticking out of the edge of the table. Place a sheet of A3 paper over the
ruler. Smooth the paper so it sits flat on the ruler and the table. Hit the
edge of the ruler.
Results:
The
ruler did not fly up when we hit it.
It only moved a little bit. It felt like it was stuck under the paper.
Conclusion: Our hypothesis was
wrong. The ruler did not fly up when we hit it because the air pressure on top
of the paper stopped any air getting under the paper. Because no air could get
under the paper the ruler could not move up when we hit it.
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