Examine this diagram. Answer these questions in your answer book:
(i) Name the Earth’s internal layer labelled X.
(ii) Name the internal process shown by the arrows... show full transcript
Worked Solution & Example Answer:Examine this diagram - Leaving Cert Geography - Question 1 - 2008
Step 1
Name the Earth’s internal layer labelled X.
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Answer
The Earth's internal layer labelled X is the 'Asthenosphere'. This layer is semi-fluid and allows for the movement of tectonic plates.
Step 2
Name the internal process shown by the arrows at Y.
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Answer
The internal process shown by the arrows at Y is 'Convection Currents'. These currents are responsible for the movement of magma and tectonic plates in the Earth's mantle.
Step 3
Name one mid-ocean ridge which you have studied.
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Answer
One mid-ocean ridge that has been studied is the 'Mid-Atlantic Ridge'. It runs down the center of the Atlantic Ocean and is a significant site of seafloor spreading.
Step 4
Name the type of plate boundary shown at Z.
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Answer
The type of plate boundary shown at Z is a 'Divergent Boundary'. This is where two tectonic plates are moving apart, leading to the formation of new oceanic crust.
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