3.1.4.2 The Nature And Distribution Of Cold Environments Flashcards

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1
Q

4 cold environments

A

Periglacial (tundra)
Glacial
Polar
Alpine

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2
Q

Where are tundra areas only found

A

On the edges of land masses in the northern hemisphere

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3
Q

2 e.gs of areas with tundra environments

A

Greenland
Canada
Siberia

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4
Q

What’s climate like in periglacial enviornments

A

Generally cold
Precipitation varies
Brief, mild summers and long,cold winters

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5
Q

What’s soil like in periglacial environment

A

Thin, acidic, not fertile

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6
Q

What are the 2 layers of soil in tundra

A

Permafrost layer topped with layer of soil that melts in summer

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7
Q

What’s permafrost

A

Soil and rocks that have been permanently frozen below ground for a period greater than a year

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8
Q

What type of layer is formed during the brief summer months when lying snow will melt and the upper part of the permafrost

A

Saturated and mobile active layer

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9
Q

What lakes are common in poorly drained tundras

A

Thaw lakes

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10
Q

What are unfrozen zones underground called

A

Taliks

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11
Q

What do plants grow like in periglacial

A

Slowly and not very tall

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12
Q

What’s most common type of plant in tundra

A

Grass

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13
Q

What root systems do plants have in tundra

Why

A

Shallow root systems

Due to permafrost

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14
Q

2 adaptations plant have in tundra

A

Grow close together and low to retain heat

Grow under a layer of snow and carry out photosynthesis

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15
Q

E.g on a plant and animal in tundra

A

Cotton grass

Red fox

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16
Q

2 adaptations cotton grass has in tundra

A

Low-lying
Seeds that scatter in wind
Darker leaves - more sun energy
Narrow leaves - reduce transpiration

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17
Q

2 adaptations red fox has in tundra

A

Multi-layer fur coat
Broad and hairy feet/hooves (snow shoes)
Stocky body

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18
Q

What are glacial environments

A

Areas of land permanently covered by ice (ice sheets or glaciers)

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19
Q

What are ice sheets

A

Domes of ice covering huge areas of land only now found in Greenland and Antarctica

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20
Q

Where has the most glacial environment

A

Antarctica - 91% ice sheets

21
Q

Where are glacial environments most commonly found

A

Above snowline

22
Q

Where shouts are glaciers found in glacial environments

E.g

A

At edges of ice sheets in mostly mountainous regions

E.g Himalayas , the Andes

23
Q

What’s climate like in glacial environments

A

High winter snow and cool summers

24
Q

Why are most glaciers found in the mountainous areas

A

More accumulation

25
Q

What are temperatures cold enough for in glacial environments

A

Ice to be present all year round

26
Q

What’s the climate like in glacial areas with ice sheets (Greenland)

A

More precipitation

27
Q

Are areas with glaciers or ice sheets generally warmer

A

Ice sheets

28
Q

Place with ice sheets

Place with glaciers

A

Greenland

Iceland

29
Q

What are the only 2 plants that may grow on glacier surfaces in glacial environments

A

Algae and moss

30
Q

Hey is there no exposed soil in glacial environments

A

They’re covered by ice permanently

31
Q

What based life is more common in glacial environments

A

Ocean-based

32
Q

3 species that live in glacial environments

A
Midges 
Snow flea
Ice worms
Rotifers
Tardigrades
33
Q

A plant that’s adapted to glacial environments

A

Lichen - doesn’t need soil to grow , can grow under snow and survive cold temperatures

34
Q

3 polar environments

A

North Pole area
Arctic
Antarctica

35
Q

What’s the North Pole made up of

A

Sea ice

36
Q

What is there none of in the Arctic

A

Soil

37
Q

What polar area has some soil

A

Antarctica

38
Q

2 examples of vegetation in polar environments (Antarctic)

A

Mosses
Lichens
Algae

39
Q

What is limited in Arctic

A

Vegetation

40
Q

What’s the climate always below in polar environments

A

-25*c

41
Q

Where does the sun not set above in summer

A

The Arctic circle

42
Q

Example of an animal in polar environment and how it’s adapted

A

Polar bear

Large stores of blubber for insulation

43
Q

Example of vegetation in Antarctic and how it’s adapted to polar environments

A

Moss

Take nutrients from poo left behind from penguins that lived years ago
Need

44
Q

Where’s the alpine environment

A

Above the tree line at an altitude of around 10,000 ft above sea level

45
Q

Where are alpine environments mostly all found

E.g

A

In the world’s greatest mountain ranges

Himalayas (Asia), the Andes (South America), alps (Europe)

46
Q

How much does the temperature drop by every 10,000ft increase in altitude

A

About 6*c

47
Q

What’s soils like at different altitudes in alpine

A

Higher - permanently covered by snow and lots of permafrost

Lower - periglacial (sandy and rocky)

48
Q

2 examples of alpine plants

A

Grasses
Wildflowers
Mosses
Succulents

49
Q

2 adaptations of alpine plants

A

Dark colouring to absorb more heat
Orientate surfaces so are perpendicular to sun
Only 1 or 2 inches tall
Dense hair surface