TA4 revision

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What are the three different plate boundaries ?
Constructive, conservative and destructive.
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Which one does a volcano form at ?
Destructive.
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Why does a volcano form at a destructive plate boundary ?
A destructive plate boundary consists of an oceanic crust and a continental crust. The oceanic crust is denser and is forced underneath the continental crus forming a gap. In this gap the hot magma rises and finds it way through the gaps.
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What is convectional current ?
Convectional current is when the magma inside the mantle heats up and rises to the top. At the top the cold magma falls back down. The cold magma that has fallen down then heats up and rises to the top. This is then formed into a cycle.
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Why does a volcano form at a constructive plate boundary ?
At a constructive plate boundary the two plates are moving away from eachother so there is a gap for the magma to go through.
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Why does an earthquake form at a conservative plate boundary ?
At a conservative plate boundary the plates are rubbing against eachother. The friction of these two plates causes the earthquake.
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Other cards in this set

Card 2

Front

Which one does a volcano form at ?

Back

Destructive.

Card 3

Front

Why does a volcano form at a destructive plate boundary ?

Back

Preview of the front of card 3

Card 4

Front

What is convectional current ?

Back

Preview of the front of card 4

Card 5

Front

Why does a volcano form at a constructive plate boundary ?

Back

Preview of the front of card 5
View more cards

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