Can magnets work through substances?
You Need :
1. a magnet
2. a jug
3. a paper-clip
4. water
What to do :
1. Pour water into the jug and drop in the paper-clip. Then invite a friend to take the paper-clip out, but without putting a hand in the water.
2. Place the magnet on the outside of the jug, on the side of the paper-clip. When this moves towards the magnet, draw the magnet slowly up towards the top.
What Happens?
The paper-clip follows the movement of the magnet until it is above the level of the water. this way, it is possible to take it out without getting your hand wet!
Because....
....the force of the magnet also works through the glass of water. If the sides of the jug were iron or steel, the paper-clip would still be drawn, but with a lesser intensity, because pat of the magnetic force would be "absorbed" by the sides of the jug.
Magnets Under Water
Because they can also exert their power underwater, magnets are widely used during the construction and the repair of underwater installations.
If I weren't called by MS.Massy today I will join the experiment now what should I do. grrrrrrrrrrrrr.
ReplyDeleteBY:Evan
It was so good that we learnt about energy and it was so fun and it was so mirical the magnet and papperclips can stick together even it was in the plastic cup their is water it still stick like normal. They are so cool
ReplyDeleteBy: Natalia