Physical Geography - Restless Earth

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what is a destructive margin
two plates moving towards each other
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what is a constructive margin
two plates moving apart
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what is a conservative margin
two plates moving past each other
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where are fold mountains formed
at destructive margins
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what are fold mountains used for
farming, mining, tourism, HEP, forestry
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what is a composite volcano
steep sided, made of ash and lava, thick and slow flowing lava
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what is a shield volcano
gentle slopes, made of lava, runny and fast flowing lava
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what is a dome volcano
steep sided, made of lava, thick and slow flowing lava
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how can we predict an eruption
earthquakes, escaping gas, changes in shape of volcano, behaviour of wildlife, water pressure/temperature, thermal imaging
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what is a supervolcano
a volcano that erupts at least 1000km^3 of material
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how are supervolcanoes identified
they are marked by calderas which often have a rim of higher land around the edges - supervolcanoes aren't cone shaped
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what is a tsunami caused by
the displacement of water (earthquakes, land slides, rockfall, volcanoes, meteors)
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how many tsunami waves are there
always more than one
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how far apart are tsunami waves
up to 200km
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how fast do tsunami waves travel
around 800kmph slowing down as they get closer to land
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when do tsunami waves stop
when they reach high land
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how tall are tsunami waves
usually 25-30m
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what is the main impact of tsunamis
flooding
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Other cards in this set

Card 2

Front

what is a constructive margin

Back

two plates moving apart

Card 3

Front

what is a conservative margin

Back

Preview of the front of card 3

Card 4

Front

where are fold mountains formed

Back

Preview of the front of card 4

Card 5

Front

what are fold mountains used for

Back

Preview of the front of card 5
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