Topics: Energy, Potential energy, Kinetic energy Pages: 4 (767 words) Published: May 16, 2013
This science fair project is about which type of grass will the soccer ball bounce on the highest, so will it bounce on the Kentucky bluegrass, Bermuda grass, or the artificial turf the highest. Hypothesis

A soccer ball will bounce the most number of times on artificial turf. BACKROUND RESEARCH

Soccer balls must be inflated with air before they can be played with. When air is pumped into the ball, the number of air molecules and consequently, the air pressure inside the ball increases. The ball starts to gradually inflate and expand outwards. Once the air pressure outside and inside the ball is the same, equilibrium is reached. Pumping more air into the ball beyond equilibrium will increase the tension on the latex wall of the ball and make the surface of the ball harder.

Raising the soccer ball to a higher position will increase its potential energy. As a soccer ball drops, the potential energy in the ball is converted into kinetic energy. Once the ball hits the ground, there will be a deformation of the shape of the ball and the kinetic energy will be converted into compressed potential energy. As the air decompresses, this potential energy is converted back into kinetic energy as the ball bounces upwards.

The same thing happens when the soccer ball is kicked. During impact between a player's foot and the soccer ball, the shape of the ball is "deformed" and the air in the ball becomes compressed. This compressed energy is then converted to kinetic energy resulting in a rebound that causes the ball to travel fast and for a great distance.

The materials required for this science fair project:

- A soccer ball
- A measuring tape
- A field of Kentucky bluegrass
- A field of Bermuda grass
- A field of artificial turf
- An assistant
1. For this science fair project, the independent variable is the type of turf i.e. Kentucky bluegrass, Bermuda grass and artificial turf....

Bibliography: You also may want to include:
• Pictures, Diagrams
• Experimental equipment
• Models or samples
Congratulations! You did it!
Bring your completed project to school by: March 1, 2013.
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