Keesha's+Group

 __**Question**__: How does more amount of wire affect the voltage? __**Hypothesis**__: We predict that more wire added to the container will increase the voltage. Because ….

__**Materials**__: 1.Container 2.Wire 3.Rare earth magnets 4.Spark 5.Sandpaper

__**Procedure**__: <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">First we took copper and we measured an arm length of copper wire then taped it to the container. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Then we wrapped the wire from the roll around and around the container a specific amount of times 100 200 300 400. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Then left another arms length of wire and taped it on then cut it then we sanded the tips of the wire. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Then put four rare earth magnets in the container. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Then we shook it and connected it to the spark and we measured the voltage three times each. We recorded the largest value of the max and min voltage. media type="youtube" key="rPW4uG4Oj18?hl=en" height="344" width="425"

__**Variables**__ <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-align: left; text-decoration: none; vertical-align: auto;">Independent variable <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"><span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-align: left; text-decoration: none; vertical-align: auto;">how much wire : the variable you change  <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"><span style="background-color: transparent; color: #000000; font-family: Times New Roman; font-size: 16px; text-align: left; text-decoration: none; vertical-align: auto;">dependent varible voltage : the variable you measure <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">control varible: the variables that you keep the same <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">amount of magnets <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">speed that is shaken for <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">same type of wire <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">same container

<span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Data table <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Voltage(V) <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> Conclusions: What does your data show you? <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Our data shows us that 300 wraps created the most voltage. Also we note that 300 was wrapped very organized compared to the others. There was little difference between 100 and 200, but 200 and 300 wraps there was a larger difference. 400 wraps produced just a little less than 300 wraps. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> Was your hypothesis correct, incorrect or can't tell? <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">We feel we really cannot tell. We suggest redoing the tests to see if we get the same results. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> What are possible sources of error? Explain how your test wasn't completely FAIR? <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;"> <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Our tests weren't completely fair because 100 and 200 were not timed using the computer but 300 and 400 were. <span style="background-color: transparent; color: #000000; display: block; font-family: 'Times New Roman'; font-size: 16px; text-align: left; text-decoration: none;">Different people shook the generator and they may not used the same speed. Even the same person could not shake it exactly the same each time. The wraps were neater for 300 than the others. The wire broke twice with the 400 wrap generator.
 * wire wraps || trial 1 || trial 2 || trial3 || average ||
 * 100 || 1.7 || 1.5 || 0.5 || 1.25 ||
 * 200 || 1.8 || 1.5 || 0.5 || 1.293 ||
 * 300 || 2.3 || 2.5 || 3.7 || 2.843 ||
 * 400 || 0.9 || 3.8 || 3.5 || 2.72 ||