Lance's+Group

__**Question**__: How does the amount of magnets affect the voltage?

**__Hypothesis:__** If we add more magnets it will increase the voltage?

**__Materials__**:

#1 container

#2 rare earth magnets

#3 wire

#4spark

#5General science sensor

**__Procedure__**:  step 1: take a arm length of wire, tape it to the container

Step 2: wrap the wire around the container 300 times, tape it every 50 wraps

Step 3: leave another arm length un wrapped, cut the wire  then sand the tips of the wire

Step 4: add magnets

Step 4.5 attatch the Spark voltage sensor to the ends of wire and begin recording

Step 5: shake for 30 seconds

Step 6: RECORD the trials when doing that check the min. and max. voltage.

<span style="color: #e62aef; font-family: 'Cambria','serif';">Step 7: Add all the trials up and then divide them by 3 to get your average

<span style="color: #e62aef; font-family: 'Cambria','serif';">nd the amount of wire __**<span style="color: #e62aef; font-family: 'Cambria','serif';">variables: **__ <span style="color: #e62aef; font-family: 'Cambria','serif';">independent is the one you change our's is the number of magnets, <span style="color: #e62aef; font-family: 'Cambria','serif';">dependent the variable you measure Our's is the amount of voltage. <span style="color: #e62aef; font-family: 'Cambria','serif';">control variables : variables that you keep the same to make a fair test

<span style="color: #e62aef; font-family: 'Cambria','serif';">the amount of wire how fast you shake it how long you shake it. Data Table
 * Number Of magnets || trial 1 || trial 2 || trial 3 || avrage ||
 * 1 || 0.09 || 0.1 || 0.07 || 0.09 ||
 * 2 || 0.44 || 0.23 || 0.24 || 0.3 ||
 * 3 || 0.61 || 0.95 || 0.76 || 0.8 ||
 * 4 || 0.79 || 0.84 || 0.84 || 0.8 ||
 * 5 || 0.6 || 0.74 || 0.75 || 0.7 ||



Conclusions:

More magnets affect the voltage. What does your data show you?

The data shows use that the voltage increase from 1 magnet to 3 magnets, but more than 3 magnets the voltage decreases. Was your hypothesis correct, incorrect or can't tell?

We feel we cannot tell because for 1, 2 and 3 because 4 stayed the same as 3 and 5 decreased. Lance feels that based on the evidence the hypothesis is incorrect. What are possible sources of error? Explain how your test wasn't completely FAIR?

There might have been knots in the wire.

We could have not shaken at the same speed each time. The time was not always exactly the same time.