One of the activities you were assigned for homework required you to try some experiments with a compass. Please click the comment button below and post your answers to the questions at the bottom of the activity handout.
8 comments:
Anonymous
said...
Summary of Expiriment: I don't exactly think that my expiriment worked as it was supposed to. Maybe it was because I used a metal bowl. Maybe it was because the magnetism on the needle expired. Maybe it was because I subsituted the cork for wax. Maybe it was because of all of the above. Anyhow, even though i followed all the irections and read them twice, my expiriment didn't work. Thought Questions: 1. Why must the needle be placed on a cork on the water? I think that the needle must be placed on the cork which mut be placed on the water becuase the needle must float. How could the needle spin if it was at the bottom of the water? I personaly don't know the answer to that. Why though must it be water? Why not land? It must be water or any type of easily running liquid because the needle has to easily be able to turn. If it didn't turn, how would you know if your compass worked? How would it move? How would it poin the way? 2. Will a magnet held close to a needle keep the compass from pointing North and South? My answer is yes. The magnet would keep the compass from pointing North or South. It would do this because the magnetic pull form the magnet would be stronger to the needle than ny other force from the norht pole or south pole, i can't tell the difference. by putting the needle off course, it will be thrown of course in a mess of chaos. 3. Why does the magnetized needle point North and South instead of East and West? The needle points Norht and South because I think that in the north pole there is a magnetic feild that draws the point of the compass to it, therefore causing a compass to point north.
1. The needle needs to be on a cork so that it spins freely in the water. 2. If you hold a magnet near a compass it will stop it from pointing north and south. 3. The magnetized needle points north and south because the Earth is a magnet lined up to the north and south, and the magnetized needle lines up with it.
I think this was such a cool experiment!! The reason the needle is placed on a cork on water is because we need a surface for the needle to move arround freely. I saw how the needle changed directions according to where I moved a magnet around the plate. Since the needle is magnetized, it is attracted to the magnet so when you put the magnet close to the needle it moves around or tips. The needle points north-south instead of east west becuase of the north and south poles, the points around which the earth rotates.
#1-- The needle must be placed on the cork because it has to float. The needle is heavy and dense and will sink, but the cork is light and floats so can support the weight of the needle and allow it to remain on the surface of the water.
#2-- Yes. If you were to put a magnet up to a compass it would effect where it points. This would occur because the compass would become confused and would think there were two different magnetic north's and wouldn't know which one to point to.
#3-- The needle points North and South because of the magnetic poles in the North and South. These pulls the magnetized needle towards them.
1.Why must the needle be placed on a cork on the water? The needle must be placed on a cork so that it will float. You need it to float so that you can see it and so that it will be able to respond to the magnetic poles. Also so that it has nothing to stop it turning.
2. Will a magnet held in front of the needle prevent it from turing North and South? Yes. What makes the nedle point North and South is a magnetic force that surrounds the earth and is ever-present. But a magnet provides a closer, stronger magnetic force that the nedle will respond to if it is there.
3.Why does the magnetized needle point North and South instead of East and West? The magnetic force that surrounds the world comes together at the North and South Poles, Therefore the magnetic pull is the strongest at the two poles. That is why the needle is drawn there instea of to the South and West. -Rachel
1.THAT WAS AWSOME!!!!The needle was placed on a cork in water because the needle needs to have a surface to turn on. 2. When you hold a magnet near the needle it will stop it from pionting to the north and to the south. 3.The magnetized needle points north and south instead of east and west because the Earth is basically a giant magnet lined up to the north and south poles, so a magnitized will be magnetically pulled to either the north or south. --graces.
1. THAT WAS TOTALLY AWESOME!!!!!!!!!!! THE NEEDLE WAS ON THE CORK 'CAUSE THE NEEDLE NEEDED 2 MOVE. 2. YA 'CAUSE IF THE MAGNET POINTS IN FRONT, IT WONT POINT NORTH OR SOUTH!!!! 3. THE WHOLE EARTH IS MAGNETIZED AND SO IS THE NEEDLE SO THE EARTH PULLS THE NEEDLE NORTH. BY THE WAY... HOW DID PEOPLE KNOW WHERE NORTH WAS AND DID HUMANS CREATE NORTH EAST SOUTH AND WEST??? (GOOD QUESTION HUH!!!???)
8 comments:
Summary of Expiriment: I don't exactly think that my expiriment worked as it was supposed to. Maybe it was because I used a metal bowl. Maybe it was because the magnetism on the needle expired. Maybe it was because I subsituted the cork for wax. Maybe it was because of all of the above. Anyhow, even though i followed all the irections and read them twice, my expiriment didn't work.
Thought Questions:
1. Why must the needle be placed on a cork on the water?
I think that the needle must be placed on the cork which mut be placed on the water becuase the needle must float. How could the needle spin if it was at the bottom of the water? I personaly don't know the answer to that. Why though must it be water? Why not land? It must be water or any type of easily running liquid because the needle has to easily be able to turn. If it didn't turn, how would you know if your compass worked? How would it move? How would it poin the way?
2. Will a magnet held close to a needle keep the compass from pointing North and South?
My answer is yes. The magnet would keep the compass from pointing North or South. It would do this because the magnetic pull form the magnet would be stronger to the needle than ny other force from the norht pole or south pole, i can't tell the difference. by putting the needle off course, it will be thrown of course in a mess of chaos.
3. Why does the magnetized needle point North and South instead of East and West?
The needle points Norht and South because I think that in the north pole there is a magnetic feild that draws the point of the compass to it, therefore causing a compass to point north.
1. The needle needs to be on a cork so that it spins freely in the water.
2. If you hold a magnet near a compass it will stop it from pointing north and south.
3. The magnetized needle points north and south because the Earth is a magnet lined up to the north and south, and the magnetized needle lines up with it.
I think this was such a cool experiment!! The reason the needle is placed on a cork on water is because we need a surface for the needle to move arround freely. I saw how the needle changed directions according to where I moved a magnet around the plate. Since the needle is magnetized, it is attracted to the magnet so when you put the magnet close to the needle it moves around or tips. The needle points north-south instead of east west becuase of the north and south poles, the points around which the earth rotates.
#1-- The needle must be placed on the cork because it has to float. The needle is heavy and dense and will sink, but the cork is light and floats so can support the weight of the needle and allow it to remain on the surface of the water.
#2-- Yes. If you were to put a magnet up to a compass it would effect where it points. This would occur because the compass would become confused and would think there were two different magnetic north's and wouldn't know which one to point to.
#3-- The needle points North and South because of the magnetic poles in the North and South. These pulls the magnetized needle towards them.
1.Why must the needle be placed on a cork on the water?
The needle must be placed on a cork so that it will float. You need it to float so that you can see it and so that it will be able to respond to the magnetic poles. Also so that it has nothing to stop it turning.
2. Will a magnet held in front of the needle prevent it from turing North and South?
Yes. What makes the nedle point North and South is a magnetic force that surrounds the earth and is ever-present. But a magnet provides a closer, stronger magnetic force that the nedle will respond to if it is there.
3.Why does the magnetized needle point North and South instead of East and West?
The magnetic force that surrounds the world comes together at the North and South Poles, Therefore the magnetic pull is the strongest at the two poles. That is why the needle is drawn there instea of to the South and West.
-Rachel
1.THAT WAS AWSOME!!!!The needle was placed on a cork in water because the needle needs to have a surface to turn on.
2. When you hold a magnet near the needle it will stop it from pionting to the north and to the south.
3.The magnetized needle points north and south instead of east and west because the Earth is basically a giant magnet lined up to the north and south poles, so a magnitized will be magnetically pulled to either the north or south.
--graces.
1. It was really cool!! The needle was placed on the cork beacause the needle has to have a space were it can move.
2. Yes, beacause if you point the magnet in front of it won't point to north or south. (weried uh!!)
3. Because of the earths fource and how it pulls the needle
1. THAT WAS TOTALLY AWESOME!!!!!!!!!!! THE NEEDLE WAS ON THE CORK 'CAUSE THE NEEDLE NEEDED 2 MOVE.
2. YA 'CAUSE IF THE MAGNET POINTS IN FRONT, IT WONT POINT NORTH OR SOUTH!!!!
3. THE WHOLE EARTH IS MAGNETIZED AND SO IS THE NEEDLE SO THE EARTH PULLS THE NEEDLE NORTH. BY THE WAY... HOW DID PEOPLE KNOW WHERE NORTH WAS AND DID HUMANS CREATE NORTH EAST SOUTH AND WEST??? (GOOD QUESTION HUH!!!???)
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