Jackie Burggraf pd. 0 Polar bears


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Jackie Burggraf pd. 0 Polar bears

  1. 1. Polar Bears (Ursus Maritimus) By: Jackie Burggraf Buchmann Biology 0 period
  2. 2. Statistics <ul><li>Polar bears are on average 7 to 10 feet tall </li></ul><ul><li>They weigh on average 1,800 pounds but the largest polar bear weighed over 2,200 pounds </li></ul><ul><li>All polar bears have thick fur to keep them warm through the freezing temperatures of the Arctic. </li></ul><ul><li>Polar bears look white but their skin is actually black and their fur is actually clear, they only appear white due to the suns reflection off their clear fur. </li></ul><ul><li>Their white appearance also helps them blend in with the snow of the Artic </li></ul>
  3. 3. Habitat <ul><li>Polar Bears live in the Arctic which is located in the northern part of the globe. </li></ul><ul><li>They are often spotted in parts of Russia, Norway, Greenland, Canada and Alaska along the ice floes. </li></ul><ul><li>The average temperature in the winter is -29 degrees F and in the summer 32 degrees F. </li></ul><ul><li>They are able to live in these extreme temperatures due to their thick fur. </li></ul>
  4. 4. Polar Bears are usually found in this circumference called the Arctic circle Dark green- normal range polar bears are spotted in Light green- occasional range they are found in over land White- occasional range found over permanent ice
  5. 5. Food source <ul><li>Polar bears favorite prey are seals, they even hunt baby seals </li></ul><ul><li>They attack when the seals come up for air or when they are resting on the ice </li></ul><ul><li>Polar bears also eat walruses, reindeer, ducks and seabirds </li></ul><ul><li>They are mainly meat eaters but they sometimes eat eggs, berries and seaweed </li></ul><ul><li>Polar bears sometimes have trouble finding food which causes them to eat whatever they can find even trash and whales that wash up onto shore </li></ul>
  6. 6. Offspring <ul><li>When a baby polar bear is born it weighs 1kg </li></ul><ul><li>The baby Polar bear stays with its mother for about 3 years </li></ul><ul><li>Has no fur when it is born </li></ul><ul><li>The baby follows its mother and drinks its mothers milk </li></ul>
  7. 7. Facts <ul><li>Paw pads with rough surfaces help prevent polar bears from slipping up on the ice. </li></ul><ul><li>Only humans prey or hunt polar bears </li></ul><ul><li>Polar bears tend to overheat more than to be cold. </li></ul><ul><li>A polar bear is so strong, that it can kill an animal with one blow from it's paw. </li></ul><ul><li>Man made pollution is a cause of death for polar bears.   </li></ul><ul><li>Some female polar bears deviate from the one room den.  They build dens with multiple rooms and even a ventilation system in the roof. </li></ul>
  8. 8. Work Cited <ul><li>Pearl, Norman. &quot;Polar Bears: Arctic Hunters.&quot; PowerKids Life Science, Rosen Publishing Group, Inc., 2011. 29 Apr. 2011 < http://www.pklifescience.com/article/103/polar-bears-arctic-hunters >. </li></ul><ul><li>Miller, Sara Swan. &quot;Polar Bears of the Arctic.&quot; PowerKids Life Science, Rosen Publishing Group, Inc., 2011. 29 Apr. 2011 < http://www.pklifescience.com/article/374/polar-bears-of-the-arctic >. </li></ul><ul><li>Pearl, Norman. &quot;Polar Bears: Arctic Hunters.&quot; PowerKids Life Science, Rosen Publishing Group, Inc., 2011. 2 May. 2011 < http://www.pklifescience.com/article/103/polar-bears-arctic-hunters >. </li></ul>
  9. 9. Pictures Credits <ul><li>http://screensavers-hq.com/?p=9 </li></ul><ul><li>http:// www.komar.org/faq/churchill_polar_bear_tours / </li></ul><ul><li>http://gs.riverdale.k12.or.us/~samanthas15/ </li></ul><ul><li>http://www.seaworld.org/infobooks/PolarBears/pbhabitat.html </li></ul><ul><li>http://www.warmingscaretactics.com/Polar_Bears.php </li></ul><ul><li>http://psp.88000.org/18__Funny_Polar_Bear.htm </li></ul>