Class+1-+Animals+&+Magnatism+2

__ Magnetism in Animals __ __** By: Cassie, April, and Fiona **__ //** As researchers/ scientists have and still are studying, they've been finding out more and more facts about magnetism throughout animals. Facts and past events about this topic are listed below: **//

HISTORY:

 * Their instincts give them navigational and homing abilities.
 * Apparently, foxes were the 1st to use the earth's magnetic field.
 * Sharks are very sensitive to magnetism.
 * Birds, Loggerhead turtle hatchlings, blind mole rats, salmon, lobster, hamsters & bacteria all use earth's magnetic field for navigation.
 * Scientists first believed birds used the sun, moon and stars for navigation.
 * Animal brains could possibly contain magnetite.
 * It is a very likely chance that animals can visually see magnetic lines/ fields.

__ USES: __

 * Birds use the magnetic fields to migrate South for Winter.
 * Sea turtles use the magnetic guidelines to direct them to shore where they will lay their eggs.
 * Not only migration, but animals also use magnetic fields to find their search in finding food,raising their babies, and breeding. [[image:http://www.mar-eco.no/learning-zone/__data/page/91/migration-route.jpg width="270" height="178" align="right" caption="Google Images"]]
 * To know that they are going away from the beach, they use the magnetic field and swim into the waves.

__ ADVANTAGES AND DISADVANTAGES: __
> magnetic directions. > === ===
 * When the magnetic field isn't strong, animals are no longer directional.
 * There is no study that shows that the reversals of the magnetic field have triggered extinctions.
 * Our planet's magnetic field is quickly weakening and might be ready to reverse it's polarity, making compasses point south. That means that the animals that used the magnetic field will have to find their own way around.
 * Deeper in the earth, there are hot magnetic metals. Study shows whales may use the magnetic field to find their way during migration.
 * Polarity reverses when the magnetic fields do. Therefore, it can mess up their

__ PERSONAL EXPERIENCES: __
CITATIONS: __  Works Cited  __ Dolittle. "Animal Magnetism." Life Lines. N.p., 3 Feb. 2011. Web. 21 Feb. 2013. . Tyson, Peter. "Animal Magnetism." NOVA. Howard Hughes Medical Institute, 3 Nov. 2003.
 * In the end of fall/beginnin g of winter, I see birds flying in flocks toward one direction, this is because they use magnetic fields during migration.
 * ===== Bacteria goes toward the magnetic poles. When they swim in the water close to the magnet, the bacteria all moves in one, straight direction. However, this all depends on where the magnet is settled **.** =====
 * While I was at school, we watched a video on homing pigeons, but one thing I saw that I never noticed before was that they get confused when they travel closer to strong magnetic field

Web. 21 Feb. 2013. .

> > > > > > >
 * ===__ ** Migrating Shark Study Video ** __===