Equipment
1. 7 squash balls
2. Water bath
3. Meter ruler
4. Thermometer
5. Tape
6. Tongs
Method:
1. Set up all the equipment so you are ready to start the
experiment. You will need to gather squash balls of the same
height, weight and type this is a control variable and will give
invalid results if not controlled.
2. Using tongs place the squash ball into the water bath. Set
the water bath to 30 degrees and wait till it reaches the
temperature. Use the thermometer to check the temperature.
3. Once the water bath has reached 30 degrees, leave the squash
ball in the waterfor 2 minutes, so that it can adapt to the
temperature.
4. Using some tape fix the meter ruler to the wall ensuring that
the bottom of the meter stick is against the floor
5. Take the squash ball out of the water bath using tongs
6. Align the squash ball with the top of the meter stick and
drop it, when the ball bounces observe carefully for the height it
bounces to. Remember to drop the squash ball from the same height
every time you repeat (1 meter) and the same person should drop it
every time so the type of the drop remains the same, these are
control variables and will give invalid results if not
controlled.
7. Record the height the ball bounces to in your results table
(this is the dependant variable).
8. Using different squash balls repeat steps 1- 7 for the
temperatures of: 35oC, 40oC, 45oC,50oC, 55oC and 60oC (this is the
independent variable, you need to change the temperature so you can
find out the difference between the lowest interval and the highest
interval this will then allow you to compare).
9. Repeat the whole experiment twice more to get an average.
Websites used:
1. http://www.123helpme.com/view.asp?id=149221
Good clear method, in numbered steps and with all the
variables
2. http://www.exploratorium.edu/baseball/bouncing_balls.html
Shit, doesnt have a clear method, not numbered
