Super Science Fair Projects :: Electronics Lab ::
What affects the strength of magnets?
Science Fair Projects Jr High Weather begins at science fair projects on weather temperature with electronmagnets...
PROCEDURES
1. Make sure you have all your materials
2. Build electromagnet
a. Use a wire stripper to remove a few centimeters of insulation from each end of the wire
b. Wrap the wire around the nail tightly 60 times
c. Make sure there’s enough wire left at the ends to attach to the power supply
e. Make sure you wrap the wire around the nail in one direction because the direction of the magnetic current depends on the electric current
f. Attach one end of the wire to the positive terminal of the battery and the other end of the wire to the negative terminal of the battery and see if it picks up any metal object so you can determine if your electromagnet works
3. Place the electromagnet at room temperature without the battery connected to it. That means only the wire and the nail sit at room temperature when the magnet is all put together. Do the same with all the other temperatures.
a. When at room temperature for five minutes record how many staples the electromagnet picks up. That determines the strength of the electromagnet.
b. Do this three more times and find the average number of staples the electromagnet picked up.
4. Boil 10ml of water using the stove or any other way to boil water.
5. Place the electromagnet in the boiling water.
c. Take out the electromagnet and immediately conduct test. Then record how many staples the electromagnet picks up.
d. Turn off stove.
6. Place the electromagnet at room temperature for ten minutes to make sure that the electromagnet is back to its original room temperature
7. Place electromagnet in 16 ounces dry ice.
b. Take out the electromagnet and record how many staples or the electromagnet picked up.
C. Clean up mess
RESULTS
The original purpose of this experiment was to determine the effect of different temperatures on the strength of electromagnets.
The results of the experiment were, that the warmer the electromagnet was the stronger it became. When at room temperature it picked up an average of 98 staples. Immediately after it was in boiled water it picked up an average of 128 staples. When frozen in dry ice it only picked up an average of 32 staples.
CONCLUSION
My hypothesis was the warmer the electromagnet was the stronger it will be.
The results indicate that this hypothesis should be accepted because after it was put into boiled water it picked up 127 staples. When it was put in dry ice it only picked up 30 staples.
Because of the results of this experiment, I wonder if I would have used longer wire wrapped around a longer nail if maybe it would have been stronger because there are more molecules going through the nail and the wire.
If I were to conduct this project again I would have used more temperatures variations. Maybe if I conducted more trials the results would have been more reliable.
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