Examine the map above and answer the following questions - Leaving Cert Geography - Question 1 - 2013
Question 1
Examine the map above and answer the following questions.
(i) Name the plate at A and the plate at B.
A _____________________
B _____________________
(ii) Name t... show full transcript
Worked Solution & Example Answer:Examine the map above and answer the following questions - Leaving Cert Geography - Question 1 - 2013
Step 1
Name the plate at A and the plate at B.
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Answer
A: North American
B: Eurasian
Step 2
Name the type of igneous rock most frequently found at C.
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Answer
The type of igneous rock most frequently found at C is Basalt, classified as Extrusive/Volcanic.
Step 3
State the age range of the ocean crust at C and the age range of the ocean crust at D.
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Answer
C: 0 - 60 million years
D: 120 - 180 million years
Step 4
Explain briefly why the ocean crust at D is older than the ocean crust at C.
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Answer
The ocean crust at D is older than the ocean crust at C because the process of seafloor spreading at the Mid-Atlantic Ridge causes new crust to be formed at C, continually pushing older crust away from the ridge. Thus, crust closer to the ridge (at C) is younger while crust further away (at D) is older.
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