Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Year 9 - Geography > Earth's Climate > Flashcards

Earth's Climate Flashcards

You may prefer our related Brainscape-certified flashcards:
U.S. Geography flashcards World Geography flashcards
1
Q

What does mitigation mean?

A

to reduce

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Pangea?

A

A super continent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Pangea?

A

A super continent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a warm period called?

A

Inter glacials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a cold period called?

A

Glacials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Give any evidence we have to know that the climate is changing.

A

Tree rings- the wider the tree ring, the wetter or hotter the weather/ climate.

Ice cores- we know the climate from years ago by taking a piece of ice which has trapped air bubbles from years ago containing different gases like: methane, oxygen, carbon dioxide..

Historical Evidence- glaciers, artefacts, paintings, diaries, photos…

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What will having more sunspots mean?

A

the global temperature will rise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how many years are there between sunspot cycles?

A

11

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does a volcanic even affect global temperature?

A

it lowers it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how many cycles did Milankovitch disover?

A

3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How long does it take the Earth to go from a circular orbit to an elliptical orbit?

A

100,000 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What causes Climate change?

A
  • changes in the way the earth moves around the sun
  • changes in the sun’s temperature
  • volcanic activity
  • asteroids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is a volcanic winter?

A

the cooling of the lower atmosphere and reduction of surface temperatures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How can asteroids cause climate change?

A

if an asteroid hits earth it will eject large volumes of dust into the atmosphere, blocking solar radiation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do sunspots entail?

A

it means that the sun is more active than before

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How long does it take for the earths axis to tilt, straighten up, and tilt back again?

A

41,000

16
Q

How long does it take for the earths axis to wobble, straighten up, and wobble again?

A

26,000 years

17
Q

How can volcanoes cause climate change?

A

volcanic ash can block out the sun, reducing temperatures on the earth. This is a short term impact.

18
Q

What is the greenhouse effect?

A

it is the way that the gases in the atmosphere trap heat from the sun.

19
Q

Name some greenhouse gases

A

Nitrogen
oxygen
carbon dioxide
water vapour

20
Q

Why is carbon dioxide the most important greenhouse gas?

A

It helps to regulate the temperature in our Earth

21
Q

True or False? Greenhouse effect is a natural process

A

True

22
Q

Why is the greenhouse effect important?

A

Without it there would be no life on earth

23
Q

What is the enhanced greenhouse effect and is it bad or good?

A

It is caused by humans and is not good.

24
Q

How is enhanced greenhouse effect caused?

A

land change
transport: cars, plains, trains
Energy supply
Industry

25
Q

How do we know that humans are the cause of enhanced greenhouse effect?

A

The temperature has changed rapidly. Temperatures have been warming up at the same time as CO2 emissions have been increasing.

26
Q

How is arctic ice being affected by the enhanced greenhouse effect?

A

We are loosing huge amounts of sea ice each year as the temperature is rising. Sea ice is melting faster than land ice.

27
Q

How is the sea level being affected by the enhanced greenhouse effect?

A

The sea level has been increasing. It has risen by about 20cm since 1900. The sea gets warmer because of thermal expansion- as water gets warmer it expands.

28
Q

Does sea ice increase sea level?

A

No, land ice will increase the sea level, as will thermal expansion.

29
Q

What are the problems when predicting the future?

A

What the world’s population will be
whether fossil fuels will continue to be used, or whether there will be a shift to cleaner energies like wind or solar
If people will change their lifestyles and recycle more, or use public transport.

29
Q

What are the problems when predicting the future?

A

What the world’s population will be.
whether fossil fuels will continue to be used, or whether there will be a shift to cleaner energies like wind or solar.
If people will change their lifestyles and recycle more, or use public transport.

30
Q

How much would the loos of Greenland’s ice sheet raise the sea level by?

A

7 metres

31
Q

How much would the Antarctic ice sheets add to the sea level if they melted?

A

13 metres

32
Q

Why would sea level rises be higher in some places than others?

A

It is because of prevailing winds and currents and also where the land is also sinking.

33
Q

What does IPCC mean and what do they do?

A

Intergovernmental, panel on, climate, change

they are a group of scientists who are independent.

Year 9 - Geography (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions