geography

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what is a divergent boundary
where plates move away from each other
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what are convergent boundaries
where plates move towards each other and collide(compressional or destructive boundaries)
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what are are transform boundaries
occur when 2 plates grind past each other with only limited convergent or divergent activity
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when does subduction occur
when the oceanic plate goes under the contintental plate
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why is there no volcanoes in conservative boundaries?
because the two plates slide horizontally therefore there is no subduction zone so no magma is being forced to the surface
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where would you find fold mountains?
in the alps, rockies & himalayas
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what is pyroclastic flow?
a mixture of hot steam, ash, rock & dust
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where does basaltic magma come from?
from rock formed under the sea 'salt' and it takes long to solidify
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where does andestic magma come from?
from rock formed under the land- solidifys quickly
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when did the kobe eruption happen
january 17th 1995 5:45am
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which boundarys were in the kobe eruption
eurasian plate & phillipine plate
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why did the shock waves carry on for a long period of time in kobe
because areas were reclaimed on sea so the land was more soft and damp
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what was the magnitude of the earthquake in kobe
7.2
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what plate margin was kobe
distructive
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primary effects of the kobe earthquake
expressways, bridges were elevated, nearly 200,000 buildings collapsed
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secondary effects of the kobe earthquake
electricity, gas & water supplies were disrupted. roads were at gridlock delaying ambulances & fire services. people afraid to go home cause of 716 aftershocks
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how can you predict an earthquake
readings on seisometers, radan gas, unusual animal behaviour
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how can you predict a volcano eruption
tremors, magma activity-tilt meter, gas & steam
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what instrument can you use to measure rain fall?
a rain gauge
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what can you use to measure wind speed
an anemometer
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what can you use to measure humidity
hygrometer
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what does CAP stand for
common agricultural policy
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what are sustainable resources and what is an example of one
can be renewed by humans & will last if managed - wood
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what are renewable resources and what is an example of one
they renew themseleves & dont need managing - waves
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how many people in LEDC's rely on fuel wood to cook & heat their homes?
2.6 billion
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what percentage of eaths water is easily accessed and useful?
0.01%
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what is economy scarcity?
when water is available but for some reason it is inaccessible or unusal which could be from ground water that is expensive to extract or the cost of transporting it is too expensive
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what are some effects of smog
age expectancy is reduced by 5 years, no sunlight, gets into lungs & blood system, pressure on hospitals, respitary diseases
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what are some of the causes of smog?
china uses dirty coal as it cheap, pm2.5 - 25 per cubic Meter, china burns as much coal as the rest of the world combined
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what is domestic tourism?
someone who goes on hoiday in the country that they are a resident in
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what is the definition of tourism?
the buisness or industry of providing information, acomodations, transportation & other services
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how do you measure the gradient
difference in vertical distance
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Card 2

Front

what are convergent boundaries

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where plates move towards each other and collide(compressional or destructive boundaries)

Card 3

Front

what are are transform boundaries

Back

Preview of the front of card 3

Card 4

Front

when does subduction occur

Back

Preview of the front of card 4

Card 5

Front

why is there no volcanoes in conservative boundaries?

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