• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

In this experiment I am going to find out how and why the temperatures of a squash ball affect its rebound height.

Extracts from this document...



In this experiment I am going to find out how and why the temperatures of a squash ball affect its rebound height. To do this, I will be heating or cooling a blue squash ball to different temperatures (27˚and above) to see if it has an effect on the height of its bounce. I will also use scientific theories to back up any conclusions I make.

To ensure that my experiment is as fair and accurate as possible and other 
variables are fixed I will;

 1) Use the same ball throughout;

2) Ensure the bounce surface is flat, smooth and as hard as possible;

3) Use the same observer to measure the bounce height of the ball;

4) Leave the ball to heat up for the same amount of time for all the temperatures; 
5) Release the ball from a stationary hand;

6) Measure the height achieved by the top of the ball. 

The variables in this experiment could be the type of squash ball, so
the pressure of the air in the ball. I could change the type of
surface that the ball would be dropped onto, for example a carpeted
surface would have a lower bounce than on a tiled surface. Other
variables would be the height at which the ball was dropped, the
material of the ball, the acceleration due to gravity, the balls'

...read more.


Group 7

Class mean
































































My results show a clear correlation between temperature increase and 
the height achieved when bounced. So this means that heating the ball does give it more energy than it originally had. The sort of energy must be kinetic energy, in the molecules of the rubber and air. Heat energy is also present. 

Intermolecular forces of attraction hold solid matter together. These 
forces can be described to be like springs holding the elastic 
material together. When a squash ball hits a surface these springs are 
compressed and stretched. The stretching and compressing of the 
springs stores the kinetic energy (k.e.) of the ball as potential elastic 
energy (p.e.e). When all the kinetic energy has been stored the spring 
will release the p.e.e. back into k.e. by returning to their original 
shape. Some of the kinetic energy is lost during this transition and 
it becomes heat energy (warming up the springs). So the ball doesn’t 
bounce back to its original height. 

...read more.


same reading three times. If I had the result after that reading then 
I would be able to see if the curve went back down or if it continued 
on that steepness or balanced out there after. For know all I can say 
is that it could be a mistake of the reading on my part. Or it could 
be a strange property of the ball that at a certain temperature and 
bounce height its bounce efficiency suddenly increases dramatically 
(which I doubt). I am going to put the result down to human error 
because the other two bounce heights don’t display the same property 
at that temperature. 

Even though there were divertive results (outliers) as this doesn’t undermine my conclusion because it still follows the same pattern of bounce increasing with temperature. It does put the effectiveness of my method and the reliability of my experiment.

There are some improvements I would like to make to my method to 
improve the reliability of my results:

  • Firstly, after taking the first reading I would place the ball back in the beaker (hot water or cold water) for a minute to ensure that the temperature stays fixed for each height.
  • Secondly, I would do some higher and lower temperatures to see if there is a maximum bounce height or if the bounce height gets higher and higher until the ball melts.
  • I would also like to repeat the whole experiment at least three 
    times to ensure maximum reliability. 

...read more.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Forces and Motion essays

  1. In this experiment I aim to find out how the force and mass affect ...

    pushing them). This experiment is being conducted to prove the potential and kinetic energy formulae which, once completed, can be used to calculate exactly the results of any situation using these theories. For example, the planning of a rollercoaster - if we prove the formulae, they can be applied to

  2. Investigation into the effect of temperature on viscosity

    It is important that care is taken when using the busen burner and goggles are worn whenever it is being used. The vicinity of other investigations around the work area should also be considered with care. Ball bearings, when not in use should be positioned somewhere safe as they can

  1. This investigation is associated with the bounce of a squash ball. I will be ...

    So this equation combined with the other equation can form the following equation: - P1V1T2 = F T1V2 A More Physics Of Balls When you hold a ball above a surface, the ball has potential energy. Potential energy is the energy of position, and it depends on the mass of the ball and its height above the surface.

  2. Squash Ball and Temperature Investigation

    The ball will loose energy in the form of heat and sound energy, discussed above, as it hits the surface of the bench when experimenting resulting in a non-proportional rise with temperature but the height of the bounce will not less than double due to molecular activity being increased as

  1. The effect of the temperature on the viscosity of the syrup.

    As a result the time taken for the sphere to travel was less than a second for 600, 700 and 800. The viscosities at temperatures 600 and 700 had the same value of 2.82 Nsm-2. Even the difference between viscosity at 700 and 800 was only 0.44.

  2. Investigation into the effects of temperature on a squash ball.

    This leads onto what is happening inside the ball, microscopically the pressure inside the ball is increasing. When the ball is heated, the air inside the ball expands at a greater rate than the ball itself, therefore increasing the pressure.

  1. What factors affect the bounce of a squash ball?

    Evaluation: The investigation went very well, as it clearly demonstrated the affect of temperature on the rebound height of the squash ball. The results that were obtained were sufficiently reliable and concordant to draw a graph and form a firm conclusion.

  2. Find out what affects the height of the rebound of a bouncing squash ball.

    Bounce (cm) 100 78 90 88 80 75 70 79 60 77 50 70 40 74 30 55 20 56 10 37 These results are quite inconsistent; which shows that I will probably need to repeat each experiment more than once in order to obtain accurate results.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work