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Question
A student is investigating magnetic fields with two magnets as shown below. The student wants to see where a magnetic field is the strongest.
Which of the following procedures would help the student find the location where the magnetic field is the strongest?
Responses
A 1. Obtain two horseshoe magnets
2. Arrange the magnets so that the two bar magnets are touching in the middle, and the two horseshoe magnets are on the outside
3. Try pulling all of the magnets apart and pushing them back together
4. Repeat step 3 five times
5. Record your observations1. Obtain two horseshoe magnets 2. Arrange the magnets so that the two bar magnets are touching in the middle, and the two horseshoe magnets are on the outside 3. Try pulling all of the magnets apart and pushing them back together 4. Repeat step 3 five times 5. Record your observations
B 1. Place magnets on a sheet of white paper
2. Sprinkle iron filings on the sheet of paper
3. Position the magnets so that they are attracted to an opposite end
4. Make sure the magnets are 3 cm apart
5. Observe the locations with the most iron filings
6. Record your observations1. Place magnets on a sheet of white paper 2. Sprinkle iron filings on the sheet of paper 3. Position the magnets so that they are attracted to an opposite end 4. Make sure the magnets are 3 cm apart 5. Observe the locations with the most iron filings 6. Record your observations
C 1. Turn one magnet so that the two bar magnets repel each other
2. Using your hands forcefully try to push the two magnets together
3. Obtain a paperclip, wooden pencil, and large pink eraser
4. Try pushing the same repelling ends together with the paperclip located in between the two magnets
5. Repeat set 4 with the pencil and eraser
6. Record your observations1. Turn one magnet so that the two bar magnets repel each other 2. Using your hands forcefully try to push the two magnets together 3. Obtain a paperclip, wooden pencil, and large pink eraser 4. Try pushing the same repelling ends together with the paperclip located in between the two magnets 5. Repeat set 4 with the pencil and eraser 6. Record your observations
D 1. Place magnets into a plastic try with at least 1 inch of water
2. Manipulate the magnets to attract and repel each other
3. Remove magnets from the tray
4. Add 2 mL dish soap to the tray of water and gently stir to avoid foaming
5. Replace magnets and repeat set 2
6. Record your observations