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Kevin D

on 17 June 2010

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Transcript of Antarctica

Antarctica Bibliography Animals Transportation Future Survival Food Chain Animals Transport Survival Food Chain Future Antarctica Bibliography http://www.wordtravels.com/images/map/Antarctica_map.jpg
http://google.com/images Humpback Whale Located in the Arctic Region in the Southern Hemisphere and surrounded by the Southern Ocean, is Antarctica. Being the most coldest, driest and windiest continent.. Its massive size for a big bundle of ice, consists of 14,000,000 km2. On this continent lives the most extroadinary animals in the world.
Emperor Penguin Albatross Killer Whale Leopard Seal My Animal Examples are.... Emperor Penguin Humpback Whale Albatross Killer Whale Leopard Seal If you're wondering if that's Free Willy well that's not... Killer Whales or called Orcas are the largest of the dolphins and are powerful hunters. They hunt sea mammals including sea lions, seals and even whales! They hunt in pods, they are recognised by their white and black coloured rubbery skin. Lastly they have a wide variety of communication sounds. The Albatross, a magnificent bird... It has a wingspan of 3.4 m. They feed on squid or schooling fish and drink salt water. The feathered giant can glide for hours and hours without rest. They also float on the water's surface and form large colonies on harbouring and remote islands near Antarctica. It is a disappointment that albatrosses are killed for their feathers for women's handbags and much more. One of the biggest animals, the Humpback Whale. It is known for its magical songs and its great journeys through the world's oceans. They communicate by moans, cries, howls and other noises. They feed on thousands of krill and small fish. Whales are also known for breaching, when they propel themselves up from the water... It is a lifetime experience., but it will soon end if people still hunt these beautiful animals for their own needs. The Leopard Seal is a skilled and fierce hunter in Antarctica. Its black spotted coat and a layer of fat also known as blubbeer, keeps it warm in the freezing land. It uses its powerful jaws and long teeth to kill its victims like fish, squid and other seals. Did you know that the Leopard Seals have no ears. The Leopard Seal is hunted and killed for its coat. Emperor Penguins are the largest of their species. The average bird is 115 cm tall. These penguins face the harshes of all weather in Antarctica, luckily they have their warm feathery skin. The birds huddle in huge colonies of thousands. An Emperor Penguin can dive 565 m and stay under the water for more than 20 minures. The females need to travel almost 80 m just to get to the open ocean and feed on fish, squid and krill. Did you know males keep newly laid eggs warm by balancing them on their feet and covering them with a brood pouch. From there males will be at the mercy of the treacherous elements and eat nothing for 2 months. WHAT TRANSPORT
DO THEY USE IN ANTARCTICA? 1. Snowshoes 2. Snowmobile 3. Snowcat 4. Aircraft 5. Ships 6. Sleds Antarctica is a fascinating place. It has extroadinary natural landscapes, animals, plant life, ice bergs and much more. Although everything we do is affecting this sacred continent. Global warming is causing Antarctica great damage. The ice sheets which are cold and big are becoming smaller and warmer, melting the ice. Adding to this underneath Antarctica is gallons of oil. This causes oil riggers to drill out the oil and take their glory. If this continues Antarctica willl soon be a wilderness. Although scientists have taken action and provided with the latest technology and sophisticated equipment they are trying to change the continent.
Survival in Antarctica is crucial, with its menacing blizzards, ice storms and its freezing temperature. It changes the beautiful land to a deadly white cemetary. In the fridge being warm is extremely essential. Scientists, explorers etc. have to wear lots of layers of clothing to keep up their body temperature warm. Explorers need shelter to keep them safe from the vicous elements of Antarctica, this is why they travel with a tent and a sleeping bag. Food is also one of the basic needs of survival in Antarctica, food will fuel and warm explorers travelling the freezing continent. Lastly hypothermia is the most common cause of death in Antarctica. Cold, wind and wet conditions chill the body so that it loses heat faster than it produces it. The best way to prevent hypothermia is to be prepared. Fun Facts

•In Antarctica, light is the most important environmental factor affecting marine organisms. Without it, plants that are the base of all food chains cannot grow.
•The most important plants in the Southern Ocean are tiny algae called phytoplankton.
•The main types of algae are diatoms and dinoflagellates.
•Further south, the ice algae that grow under and within pack ice and snow are also important.
•Algae grow well in Antarctic waters because of a plentiful supply of nutrients brought to the surface by upwelling warmer water.
•Krill, small animals that feed on phytoplankton, dominate the zooplankton.
•There are about 600 000 billion krill in the Southern Ocean, weighing 500 million tonnes. They are the most abundant animal in the world.
•It is estimated seabirds eat more than 115 million tonnes of krill per year.
•The Antarctic food web is very sensitive to change. Any change in the numbers of one species is likely to have major impacts on others.
• Crabeater seals outnumber all other seals in the world put together.

Human impacts

•Humans currently harvest about 100 000 tonnes of krill per year, mostly in the same convenient locations used by seals and penguins. Dried krill are close to 50% protein and rich in vitamins, so this harvest can be expected to increase.
•Humans catch large numbers of Patagonian and Antarctic toothfish, and there is a danger this fishery could be over-exploited. (Only 120 of the 20 000 known species of fish live south of the Antarctic Convergence.)
• Long-line fishing kills more than 100 000 seabirds a year

Thanks for watching! Big thanks to Prezi and Mr Sheffield for showing us Prezi and how to use it...
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