Magnetic Force (4/4-4/8)

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Summary:

This week we were learning about magnetic forces. A magnetic force is the power that is forming between things that are magnetic. We did a science experiment to see what can break a magnetic force. What do you think will break a magnetic force?

In the science experiment, we were testing to see what different things can break a magnetic force. We have tested a lot of objects: a shoe, paper, hand, rubber band, necklace, cardboard. But... they did not break the force.

At the end, we found out that the only thing that can break a magnetic force is space. What does that mean? Have you ever tried putting 2 magnets close together and fee them attract? Well, if you put them further apart, there is not a magnetic force anymore which means that the magnets are too weak at this point to attract.

The stronger the magnet is, the further the magnets will attract from. Some magnets are really weak, and those magnets will only attract from only a close distance.

Opposites Attract

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Have you ever heard the saying "opposites attract"? Well, it is true with magnets. There is a north pole and a south pole on every magnet. The south pole is generally the positive side. If you are pointing two north pole sides together, the magnets will repel. Have you ever felt that? Sometimes the magnets are so strong that even if you force them together you will not be able to. However, if you are pointing north and south together, the sides will attract easily and it can be difficult to separate it.

Attracted to Magnets

The three elements that are most attracted to magnets are iron, cobalt, and nickel. Steel has some iron in it so it is also attracted to magnets. Does it ever happen to you when you are holding something magnetic, and then something else gets attached to it such as a paperclip? That thing that gets pulled to it is most likely made of iron, cobalt, or nickel.

SP3: Planning and Carrying out Investigations


As a group, we performed an experiment to test our hypotheses. We thought that something really thick such as a book would break a magnetic force, but we proved that we were wrong and the only thing that can stop a magnetic force is space.

Conclusion

I hope you learned something about magnetic forces today from my examples and explanations. It was really fun in class when we were trying to break the magnetic force many different ways but none worked. After that, we figured it out!


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