Monday 18 July 2011

Improvement of mini experiment

Time : 
There is not much information gathered about the time taken for static electricity to disperse. All I know is that static electricity disperse quickly. Even with the results from the previous mini experiment, there is still no concrete evidence. Furthermore, the results may be inaccurate. However, this is the only information I have reagardint the topic. I will be basing my hypothesis on the results of the mini experiment, by taking the average timing of the three

Research question: How long can the stream of water maintain it’s bend before returning to its original position

Hypothesis: The stream of water should be able to maintain the bend for about three minutes.

Materials : Timer, balloon, balloon pump, ruler, distance scale, water faucet, online protractor tool, camera, metronome, scale 

Variables : 
Independent : Degree of 'bend' of water
Dependent: Time taken for water to return to its original position
Constant: 
Size of the stream of water, size of the balloon, amount of static electricity produced, material of the balloon, amount of air pumped into the balloon, speed of metronome, number of times balloon is rubbed against hair, distance between stream of water and balloon 

Procedure :1. Make a scale and place it behind the water faucet (Ensure that the stream of water is flowing straight along the line drawn on the scale)
2. Place a small distance scale on top of the tap to roughly estimate the distance 
3. Use the balloon pump to pump up the balloon (about 10 pumps)
4. Rub the balloon against the woolen jacket (about 50 times)
5. Use a metronome to ensure constant speed (150 BPM) 
6. On the water faucet
7. Place the balloon near the faucet (about 1cm)
8. Take a video of the process
9. Do not move the balloon until the stream of water has completely returned to its original position. 
10. Repeat the experiment again for another two times
11. Use the online protractor tool to measure the degree of the 'bend' in the stream of water
12. Tabulate the results for easy reference

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