Warming Up the Ball Before Playing Squash Ball
Hypothesis
Warming up the squash ball helps it bounce higher.
Variables:
Type of Surface
Height of Drop - Independent variable
Temperature of Ball
Material of Ball
Acceleration Due To Gravity
Mass
Angle of Surface
Air Resistance
Diameter of Ball
Height of Bounce - Dependant Variable
Plan
I aim to find out if warming up squash balls before bouncing them
affects the height of its bounce. I will need a squash ball, a meter
ruler, goggles, a Bunsen burner, a heat proof mat, a tripod, a beaker
half full of water, a thermometer, wire gauze and some tissue.
I will set up the apparatus as shown in diagram and then drop the ball
from 100cm and measure how high it bounces. I will do the first test
before heating it so that I have one result at room temperature. I
will then heat the ball to 30°c and drop it again from 100cm and
measure its bounce. Then I will repeat this process for 40 °c, 50°c,
60°c and 70 °c andmeasured the bounce height of the ball. I will
repeat the experiment for each temperature another 4 times to gain an
average. I will have to be careful with the Bunsen burner, so I will
wear goggles. To keep the experiment fair the only thing, which we
changed each time, was the temperature. We used the same ball through
out the experiment and checked the ball was at the same temperature
each time. We dropped it onto the same table from the same height as
well. Some of the results needed to be repeated to make sure that they
were accurate.
I predict that the squash ball will bounce higher as the temperature
gets warmer. This is because as it gets warmer the atoms in the ball
vibrate more. This means that when it hits the ground the atoms push
each other way forcing the ball to bounce higher.
I decided to use one type of ball, so the weight was constant. And the
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