Geography Edexcel B Dynamic Planet Unit 2 REVISION CARDS

Climate and Change Revision Cards 

If you want to print them, you'll have to fold each card where the blue line in the middle is and glue it down. You can then use it to test yourself on the questions. I recommend going through the cards once before you revise and put the cards into two piles; Know, and Need to revise. Then go through and learn the cards in the Need to revise pile. 

Exams are so soon and I need all the good karma I can get! I hope these are as useful for you as they were to me. Good luck! :)

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  • Created by: Faridae
  • Created on: 07-05-14 16:55

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Slide 1

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How do we know that the What are the 3 natural
Earth's climate has changed causes of climate change?
through history?
·Fossils are found of animals and plants in 1. Volcanic eruptions ash and dust blankets the
regions they are not found in today Earth and blocks incoming solar radiation so earth
cools/ releases C02 which causes the greenhouse
·Evidence of glaciation in regions that are effect and causes the planet to heat up
now free of ice 2. Sunspots darker areas of the Sun's surface- a
·Evidence from rocks showing us what the sign of greater solar activity. Come and go in
cycles of around 11 years. 1645-1715 little
climate was like when they were formed sunspots coincided with little ice age
·Evidence from ice cores in Greenland and 3. Changes in the Earth's orbit Milankovitch said
Antarctica showing us how much C02 and every 100,000 years orbit goes from circular to
elliptical (orbital eccentricity) and axis changes
oxygen was in the atmosphere when the ice over 40,000 and 26,000 year cycles. Proximity to
was formed. the sun affects amount of solar energy received.
Facts on the little ice Why did the dinosaurs
age and its impacts die out?
·Coincided with 90 volcanic eruptions
·Price of grain increased leading to social unrest A meteor struck the Earth, producing
and revolt a lot of gas and ash which decreased
·Thames froze so ice fairs were set up
the amount of sunlight the Earth
·Agriculture failed
·Made travel difficult received. This caused a lot of plants to
·Boats could not supply villages with essentials die so herbivore dinos died hence
·Hydrophilic parasites devastated crops carnivore dinos died. Eventually the
·People abandoned farms at high latitudes whole population died out.
·Population declined: Iceland lost ½ its population
·Fishing was poor as fish migrated to warmer
·Glaciers developed and overran towns
·Storms and Floods…read more

Slide 2

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Why did the mega fauna die How does the enhanced
out? green house effect work?
·The end of the ice age brought a sudden 1. Short wave radiation from the sun
temperature rise of 5 degrees Celsius passes through the atmosphere
animals could not cope with the climate 2. Some long wave radiation passes back
change into space
·Retreating glaciers less water for plants 3. Some long wave radiation is reflected
and animals off greenhouse gases back into the
·Human beings hunted down animals to the Earth which is causing global warming.
Why is the amount of
greenhouse gases in the What are the impacts of
atmosphere increasing? global warming?
·Permafrost melts and gases are released
·Water supply affected
·Burning fossil fuels for energy
·Rare species extinct
·Transport ·Heat waves
·Increasing demand for beef (more cows ·Oceans warming
more methane) ·Arctic ice caps melting
·Rice farming- produces methane ·Sea level rising
·Coral reefs destroyed
·Island nations under water
·Food shortages
·Millions of refugees
·Greenland melts
·1/3 of Bangladesh under water…read more

Slide 3

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What are the consequences of What are the consequences
climate change in the UK? of climate change in Egypt?
·Hot summers boost tourism · Sahara desert will grow
·Increase in the prevalence of tropical desertification reduces amount of
insects living space
·More air conditioning · Heat waves death and illness in
·Ice in Scotland will melt- no ski resorts young and elderly
lose tourism · War between Egypt and neighbouring
·More severe droughts in summer countries over right to water from
·More storms in winter the Nile
·Tropical diseases more prevalent · If Nile delta is flooded less food will
·Sea level rises low lying areas will flood be produced- famine and cities like
Alexandria will be underwater
Why is it hard to predict
the future levels of What are the impacts of
greenhouse gases? global warming?
·Permafrost melts and gases are released
·Hard to predict people's reactions-
·Water supply affected
whether they will reduce the pollution
·Rare species extinct
they create or not ·Heat waves
·Cannot predict major volcanic eruptions ·Oceans warming
which may neutralise or heighten CO2 ·Arctic ice caps melting
levels ·Sea level rising
·Cannot predict population ·Coral reefs destroyed
·Island nations under water
·Food shortages
·Millions of refugees
·Greenland melts
·1/3 of Bangladesh under water…read more

Slide 4

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Give 4 examples of
greenhouse gases, where
Name some human activities
they come from and what
which contribute to the
percentage it is out of all
enhanced greenhouse effect
the greenhouse gases
Carbon dioxide:
· Burning fossil fuels, deforestation by burning
down forest
·Driving · 89%
·Burning fossil fuels Methane:
·Eating meat cattle ranches · Gas pipeline leaks, farming rice in paddy
·Rice farming fields, cattle farming
· 7%
Nitrous Oxide:
· Jet aircraft engines, cars, lorries, fertilisers
and sewage farms
· 3%
Halo carbons:
· Industry, solvents, cooking equipment
· 1%
Name the 5 air masses What will the UK's
and the weather they weather be like in the
bring future?
1. Arctic: air masses from the arctic bring very
strong cold wind and snow
·Overall UK summers will be warmer and
2. Continental: air masses from the East and winters will be wetter.
Continental Europe bring dry, hot weather in the ·By 2080 temperatures will have risen by
summer and very cold weather in the winter 4 degrees Celsius.
3. Tropical continental: air masses from Africa and ·In the summer heat waves will be more
Southern Europe bring hot and dry weather in common as temperatures reach 40
the summer degrees.
4. Tropical maritime: air masses from the Atlantic ·Rainfall is expected to decrease so
ocean (south east) bring wet and windy weather
there will be more droughts.
5. Polar maritime: air masses from North Atlantic
Ocean bring cool, wet and windy weather ·Winters will bring less snow and more
rain. We will receive more severe storms.…read more


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