Physical Geography (AQA A)

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Give 2 differences between oceanic and continental crust
Continental crust is thicker and less dense
1 of 30
Give 2 differences between composite and shield volcanoes
Shield volcanoes are only made up of lava and they are flatter than composite volcanoes
2 of 30
Why has mining in the Alps decreased?
It's declined due to cheaper, foreign alternatives
3 of 30
How are ocean trenches formed?
An oceanic plate is subducted under a continental (less dense) plate
4 of 30
Give 2 differences between a supervolcano and a normal volcano
Supervolcanoes have a caldera and cover a much larger area than normal volcanoes
5 of 30
What is the difference between an epicentre and a focus?
A focus is the point where the earthquake starts and the epicentre is the point on the crust directly above the focus.
6 of 30
Give a difference between the richter scale and the mercalli scale
The richter scale measures the magnitude of the earthquake where the mercalli scale measures its effects
7 of 30
What is a tsnumai?
A long high sea wave caused by an earthquake or other disturbance.
8 of 30
When is UK temperature highest?
In July and August
9 of 30
Why are places at a higher latitude colder than lower latitudes?
The sun's heat energy is spread over more area because it's at a lower angle in the sky
10 of 30
Where do depressions form and in which direction do they move over the UK?
Atlantic ocean and east
11 of 30
Which summer in the last 10 years was the wettest summer on record?
Summer of 2007
12 of 30
Give 2 impacts on health of extreme weather in the UK (global warming)
Heatwaves cause more death from heat exhaustion and flooding causes more death by drowning
13 of 30
By how much has average global temperature risen in the last 100 years?
0.9°C
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Give 1 political and 1 environmental impact of global warming
Coastal habitats could be lost from the rising sea levels and scarceness of water could result in wars between countries competing for water
15 of 30
By how much did the Kyoto Protocol want to reduce CO2 emissions by 2012?
5% below 1990 levels
16 of 30
What temperature does water have to be for a tropical storm to form?
27°C
17 of 30
Which way do tropical storms spin in the northern hemisphere?
Anticlockwise
18 of 30
What is hydraulic action?
Where the force of the water breaks rock particles away from the river channel
19 of 30
What is suspension?
Where small particles like silt and clay are carried along by the water
20 of 30
Which two processes are required to make Ox-Bow lakes?
Erosion and Deposition
21 of 30
What are levees (in terms of depositional river landforms)?
Natural embankments along the edges of a river channel
22 of 30
Where do meanders develop?
In the middle and lower courses of a river
23 of 30
How is a 'step' created in a river?
Softer rock is eroded more than hard rock in the upper course
24 of 30
Give 2 factors that would result in a shorter lag time and more discharge
Intense rainfall and Impermeable rock
25 of 30
How does snowmelt cause flooding?
When lots of snow or ice melts lots of water goes into a river in a short space of time, increasing discharge and causing a flood
26 of 30
Give 2 human reasons for flooding
Deforestation and building construction
27 of 30
Give a benefit and a disadvantage of flood warnings
The impacts of flooding are reduced but they don't stop a flood happening
28 of 30
Give a benefit and disadvantage of dams and reservoirs
They can be used for HEP but they are expensive
29 of 30
How much has water usage in the UK risen by in the last 25 years?
50%
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Other cards in this set

Card 2

Front

Give 2 differences between composite and shield volcanoes

Back

Shield volcanoes are only made up of lava and they are flatter than composite volcanoes

Card 3

Front

Why has mining in the Alps decreased?

Back

Preview of the front of card 3

Card 4

Front

How are ocean trenches formed?

Back

Preview of the front of card 4

Card 5

Front

Give 2 differences between a supervolcano and a normal volcano

Back

Preview of the front of card 5
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