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Geography > Weather Hazards And Climate Change > Flashcards

Weather Hazards And Climate Change Flashcards

1
Q

What are the 3 types of weather cells

A

Hadley, polar and Ferrell cells

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2
Q

What is the UK’s weather driven by

A

The North Atlantic drift current

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3
Q

What causes the trade winds

A

Differences in pressure

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4
Q

What does low pressure mean

A

Cloudy and rising air which means rain.

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5
Q

What does high pressure mean

A

Clear sky’s falling air which means no rain and warm climate.

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6
Q

How can heat be redistributed around the world?

A

Trade winds and jet streams

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7
Q

What does the criollos effect do to jet streams

A

To curve like waves

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8
Q

Which way do storms spin in the northern hemisphere

A

Anti clockwise

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9
Q

Which way do storm spin in the Southern Hemisphere

A

Clockwise

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10
Q

What geological time frame are we in now

A

Inter glacial Holocene

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11
Q

What is a natural cause of climate change

A

The milankovitch cycles

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12
Q

Another natural cause of climate change

A

Meteor strikes- dust blocks the sunlight so photosynthesis can’t occur

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13
Q

Why is the earth warming up

A

Solar radiation getting trapped in by green house gases acting as a blanket

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14
Q

Why does the UK’s climate vary so much?

A

Because of maritime influences and altitude

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15
Q

Where do hurricanes form

A

Over warm waters along the equator

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16
Q

How do hurricanes move

A

They follow the prevailing winds

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17
Q

Why are hurricanes only a risk to coastal areas

A

They bring storm surges and they will lose they power when they go over land so won’t last long

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18
Q

Name a cases study on a hurricane

A

Hurricane sandy and typhoon haiyan

19
Q

What human activities cause drought

A

Dams blocking flow of water, agriculture and deforestation

20
Q

What are some meteorological characteristics

A

Level of dryness of an area, ocean currents, jet streams

21
Q

What are some hydrological characteristics

A

Low precipitation, dry soil from no rain, low amount of dry water.

22
Q

What are some consequences on global warming

A

Food production starts to decrease because of the temperatures rising which can effect the yield of crops

23
Q

What is increasing the rate of global warming

A

Demand for: goods, food, energy and transport is getting higher. Which means more burning of fossil fuels.

24
Q

How can we measure climate change.

A

Measuring ice cores, sea level and glacial features

25
Q

What keeps the UK seas warmer.

A

The Gulf Stream

26
Q

How do we categorise hurricanes

A

On the Saffir Simpson scale

27
Q

How did Ethiopia respond to there drought situation?

A

They got help from charities which showed that they didn’t know what to do as a country. But where giving education to people on what to do

28
Q

How did the Californian government respond to their drought situation?

A

They put limits on water, made strict rules and made people aware of the situation

29
Q

What type of pressure is found in the eye of the storm

A

Very low pressure

30
Q

What type of pressure is found on the outside of the storm

A

High pressure which is rushing to the centre

31
Q

What does the coriolis effect mean

A

The area around the equator is spinning faster than places further north or south. So storms in the northern hemisphere spin to the right and oppositely in the south.

32
Q

What number was typhoon hayian on the saffir simpson scale

A

5

33
Q

How fast were the winds in typhoon haiyan

A

314km/h

34
Q

How many people died in typhoon haiyan

A

600

35
Q

How many people were made homeless in typhoon hayian

A

10,000

36
Q

How much did it cost to rebuild the damage after typhoon haiyan

A

2 billion

37
Q

How fast were the winds in hurricane sandy

A

129km/h

38
Q

How many people died in hurricane sandy

A

150

39
Q

How much did it cost to rebuild damage after hurricane sandy

A

65billion

40
Q

What are the Milankovich cycles

A

Natural changes to the earths orbit and position that affect how much radiation we receive from the sun.

41
Q

What is the Eccentricity cycle

A

The orbit of the earth changes shape every 100,000 years. This means the earths orbit around the sun is sometimes more circular making us warmer (interglacial) and sometimes the orbit becomes elliptical making the earth colder (glacial)

42
Q

What is the axial tilt cycle

A

Approximately every 40,000 the angle of the earths tilt changes which means some areas of the earth are further away from the sun.

43
Q

What is the precession cycle

A

The way the tilt is facing changes, this happens approximately every 24,000 years

44
Q

How can we find evidence for climate change

A

We can look at tree rings and if the rings are thin that means that it has been colder and if the rings are thick it means it has been warmer

Geography (6 decks)

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