i have a science fair thing?

Question

and i have to give answers to how magnetism has to deal with real life. All i got off line was MRI's and it holds the earth in place... anyone got anything else i can use???

thank you to all that have answerd... there were alot of great ones and one stupid one..... but i have choosen my best answer....Elisa.... but anyone can feel free to continue aswering for points....thanks again

Answer 1

It's not too hard to think of places where magnetism play an important part of technology.

Electric motors would not exist without magnetism. Think of how many places electric motors are used.
Electrical transformers work on magnetism. Our power grids would not work like they are without magnetism. In fact, our power grid and convenience of electricity probably wouldn't exist without magnetism. The dynamo that generate electricity at the power plants all use magnetism.
Forget playing music on stereos or headsets. All the speakers have a little magnet in it.
Compasses work on magnetism. All things that rely on the compass (like navigation systems) would not work if earth is not a big huge magnet.
Without magnetism, there would be no aurora borealis. The high energy particles from the sun would bombard earth surface and cause all kinds of problems.
Without magnetism, there would be no audio tapes, no computer hard drives, no mangeto-optical drives. The 80GB IPod wouldn't exist as we know it without a miniature hard drive. The computer would not have room to hold all the family photos that we take on the digital camera.

Answer 2

The speakers on your telephone, stereo, (any speaker or microphone for that matter) uses magnates to produce "sound" so we can hear it.

Magnetism is in a "field" all around the earth. It is different in intensity and direction at different places. That is how a compass works. The difference between TRUE north and MAGNETIC north depends on where you are standing. In Seattle, Washington, U.S.A. for example, the difference is about -12.4 degrees. Some scientists believe certain animals (like bees, birds, whales, etc) navigate over long distances using the magnetic field around the earth.

Magnetism also has effects on the human body. Some people believe exposing yourself to a low-intensity magnetic field heals some ailements (like arthritis, etc). BUT, it can also have an adverse effect on you as well. Since our bodies have "metal" in them (like iron, etc), some of which are"ferrous" (affected by magnets), getting too near a powerful magnet can cause problems.

Some other example of the use of magnets in "everyday life" are TV, and computer monitors, where a magnetic field directs the little pixels to the correct places on your screen.

Hope this helps....Good luck !

Answer 3

Magnets are used in small motors to produce the electricity. Like in hair dryers, drills, etc.

Some high speed trains use magnetism to levitate the cars, thereby reducing friction, enabling the train to travel at high speeds with little resistence.

Electro magnets are used in auto junk yards to lift cars. They are also used by some construction sites to lift heavy steel structures into place.

Hope these help. You can get a lot more using the link below. Cheers!

Answer 4

How about a compass to find your way.
how about an electro magnet topick up metal in a junk yard.
how about a magnet for non destructive testing in a laboratory.
how about the device towed by a small plane to pick up differences in magnetism in the earth to show where mineralization is present for mining exploration. how about magnetisn in microphones and speakers
How about powerfull magnets in cyclotrons for atomic particle acceleration
how about magnets in switching gear for telephone systems, (mostly replaced by fibre optics now)
how about electric magnets in all electric motors.
how about magnets that hold cupboard doors closed
and fridge doors closed.
magnets are imbedded in tools to hold screws while trying to screw things


Magnets are every where

Answer 5

electro-magnetic radiation is very important but if you are looking for ways in which we use it in our daily lives. Look at things like computers, credit cards, cassette and VCR tapes ( I know it is a bit dated) also there are new cancer therapies and eastern medicine.

If electro-magnetic radiation is of interest that look into quantum mechanics and the structure of atoms.
http://en.wikipedia.org/wiki/Electromagnetic_radiation

Answer 6

Google magnetite and birds to find out how magnetism in the brain helps birds follow their migratory routes. They finally looked for it in human brains and, guess what? Humans have magnetite in their brains, too.

Answer 7

So????