cold deserts

15
COLD DESERTS José María Lorca Lorente 2ºESO A

Upload: science-productions

Post on 27-Jan-2017

1.848 views

Category:

Education


0 download

TRANSCRIPT

Page 1: Cold  deserts

COLD DESERTS

José María Lorca Lorente2ºESO A

Page 2: Cold  deserts

What is a desert? A desert is a biome which has little rainfall. The deserts form the largest area of the land surface, a 53% of the deserts are hot deserts and the 47% of deserts remaining is formed by cold deserts.

A cold desert A hot desert

Page 3: Cold  deserts

What is a cold desert? A cold desert is a desert which temperature usually are under 0 C, moisture in the air and the wind is strong,that means life is really difficult. The living things which lives in these places are adapted

Page 4: Cold  deserts

Types of cold deserts Polar regions:where the temperature remains below the freezing point all year, leaving the soil with no way of life. A polar region

Page 5: Cold  deserts

The poles North pole:Artic,It belongs to the Artic Ocean and areas from the north of Europe, Asia and North America. South pole:Antartic.They are the coldest places in the world.

Page 6: Cold  deserts

Wildlife In the Arctic, many animals are living on land and in Antarctica, wildlife lives entirely in the ocean. We can find in cold deserts animals like polar fox, lemming brown or Siberian reindeer, polar wolf humpback whale…. All are adapted to the climate with a large fur or fat that helps keep heat and energy.

Page 7: Cold  deserts

Wildlife(examples)

A polar wolf a polar bear

A polar fox A siberian lemming

Page 8: Cold  deserts

FLORA Lifestyle are simple, poor and sometimes non-existent. Terrestrial algae, lichens, fungi, moss, antartic grass , arctic flower and liver carnation. In the less extreme places appear some herbaceous.

Page 9: Cold  deserts

Artic Fox It is one of 17 arctic endangered animals, caused by the melting of polar rubble. Arctic tundra of the Arctic Fox depends is disappearing due to an increase of temperature, because of this red fox (arctic fox enemy food) moves northward and reduce the territory.

Page 10: Cold  deserts

Weather In the polar areas, summer and winter lasts six months. Polar deserts have lower annual precipitation 250 ml. The soil remains frozen.The most of the soil are bedrock or gravel plains. Only water is in liquid state in areas rising from 0 C

Page 11: Cold  deserts

Curiosities The aurora borealis is a phenomenon that appears in the night sky in polar areas.It is visible from September to March.Aurora comes from the Roman goddess of dawn and northern boreal meaning.

Page 12: Cold  deserts

Taklaman Desert Taklamakan desert (enter and never leave) is a paradigm of a cold desert.Due to its proximity to the cold air mass from Siberia in winter may be -ºC.In 2008 It was covered with a layer of snow of 4 cm and a temperature of -26 ° C.

Page 13: Cold  deserts

Gobi Desert It is a cold desert that stretches from northern China to southern Mongolia, occupies almost a million Km2 . Fauna: Real eagle, wild camel, gray wolf. Flora: The Tahana or cimarrona onion, acacia, artemisia, all dwarfed, deformed and stunted.

Page 14: Cold  deserts

Gobi’s Bear It is some of the species threatened not only by the lost of their habitat, but also by the hunters because of the value of his skin. Lives in the Gobi Desert.

Page 15: Cold  deserts

Thank you for listening