lesson 17- antarctica Flashcards

1
Q

what is the lowest temperature recorded on earth/ in antarctica

A

-89*C

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2
Q

winds are up to ___km/h

A

300

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3
Q

how does latitude affect climate in antarctica

A

areas close to the equator are hotter as the sun is directly overhead during the day, the further away you get from the equator, the lower the angle that the sun is in the sky, so it gives less heat.

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4
Q

how does altitude affect climate in antarctica

A

higher=colder
falls 1*C for every 100m in height
-antarctica is 2300m above sea level-highest continent

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5
Q

how does the distance from the sea affect climate in antarctica

A

land warms and cools quicker than the sea
-places further inland are warmer in summer but colder in winter
-it is cooler near the coast in summer

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6
Q

how does wind direction affect climate in antarctica

A

areas in antarctica are sheltered from the wind, e.g. areas near the transantarctic mountains

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7
Q

how does albedo affect climate in antarctica

A

= the darkness of the surface
-there are many light surfaces such as snow covered areas. They reflect the heat and are much colder than dark surfaces, which absorb

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8
Q

what ocean surrounds antarctica

A

southern

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9
Q

how big is antarctica

A

14 million km^2
-5th largest continent

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10
Q

what is the physical geography of antarctica

A

-high, flat plateau
-highest point is Mount Vinson-4892
-dark from april to august
-low precipitation levels
-high winds

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11
Q

what is precipitation like in antarctica

A

70mm at south pole and 400mm at coast

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12
Q

what is fishing and whaling like in antarctica

A

large scale fishing exploitation
-destruction of habitat due to machinery, accidental killing

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13
Q

what is scientific research like in antarctica

A

40 permanent bases
26 airports
coastal- disrupts penguins
plane landings limited to interior

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