Recent Changes

Tuesday, March 13

  1. page matt-and-chandler edited ... {04d55_migration.jpg} What is Earth's magnetic field? ... Northern Pole. {earthsmagne…
    ...
    {04d55_migration.jpg}
    What is Earth's magnetic field?
    ...
    Northern Pole.
    {earthsmagneticfield.jpg}
    How do birds and Earth's magnetic field work together?
    ...
    {global_flyways.gif}
    Do only birds use the magnetic field?
    ...
    magnetism and it is believed that military and other ships using sonar are the primary cause. When migrating especially but also while feeding, whales use their magnetic sense; however, their magnetic sense becomes skewed and distorted when w
    {loggerhead.jpg}
    in the field of these ships and the sonar waves they send out. Examples of animals using magnetism are everywhere and it is a truly remarkable, natural phenomenon!
    {loggerhead.jpg} {Humpback_Whale_underwater_shot.jpg}
    Citations:
    http://www.pbs.org/wgbh/nova/nature/magnetic-impact-on-animals.html
    http://adsabs.harvard.edu/abs/2005AGUFM.B31C1001K
    http://news.softpedia.com/news/Animals-and-the-Magnetic-Field-of-the-Earth-81528.shtml
    http://www.pbs.org/wgbh/nova/magnetic/reve-drives.html
    http://www.unc.edu/depts/oceanweb/turtles/geomag.html
    http://www.scientificamerican.com/article.cfm?id=why-do-whales-beach-themselves

    (view changes)
    9:58 pm
  2. page matt-and-chandler edited ... {global_flyways.gif} Do only birds use the magnetic field? ... nearest shore the quickl…
    ...
    {global_flyways.gif}
    Do only birds use the magnetic field?
    ...
    nearest shore the quickly when
    ...
    magnetic field. Many people wonder about how whales become beached when they are otherwise healthy, this also caused by magnetism and when w
    {loggerhead.jpg}
    (view changes)
    9:49 pm
  3. page matt-and-chandler edited How do birds and other animals use natural magnetism for navigation? Introduction: When the sea…
    How do birds and other animals use natural magnetism for navigation?
    Introduction:
    When the seasons begin to change from summer to fall and the climate is steadily getting colder, birds begin to migrate south to warmer climates. This is a fact we learn at a young age, however, we tend to look past the logistics of it all. Just like most things in life, the concept of migration relates back to science, and in this case it is magnetism. Most are aware that birds search for warmer climates but how do they know where to go? They use a concept that dates back to before the world of GPS systems.
    {04d55_migration.jpg}
    WeWhat is Earth's magnetic field?
    Much like a regular bar magnet, the Earth is polarized with a North and South Pole. These two poles are responsible for the magnetic field on Earth and, also like a bar magnet, the magnetic field around Earth is created by the movement of electrons. As you can see in the picture below, these electrons flow from the Southern Pole around and into the Northern Pole.
    {earthsmagneticfield.jpg}
    How
    do notbirds and Earth's magnetic field work together?
    Birds are much like compasses in that they
    have to let bird migration or any animal migration be a mystery anymore! Innatural sense of magnetism and identifying where the North and South poles are. This ability allows birds to reasonably pinpoint their latitude and longitude (location on Earth) and then their natural instincts lead them South if they are in the Northern Hemisphere and North if they are in the Southern Hemisphere.
    {global_flyways.gif}
    Do only birds use the magnetic field?
    No, in
    fact, a
    {loggerhead.jpg}
    (view changes)
    9:42 pm
  4. 9:41 pm

More