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12 Cards in this Set
- Front
- Back
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What is this area described as? |
A chain of fifty volcanic islands, coral atolls and submarine mountains over a stretch of 6,000km from Hawaii to the Aleutian trench |
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How many volcanic islands are there here?
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50 |
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Where do the volcanoes run? |
Hawaii to the Aleutian trench |
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How many kilometres of volcano are there in the area? |
6,000km |
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What created these features?
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Hotspot beneath the pacific plate
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What happens to the extinct volcanos? |
They weather down until eventually they are below the water level |
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How far does the pacific plate appear to move a year? |
8.2cm per year |
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When did the direction of the plate change, and in what direction? |
43 million years ago, northerly to north-westerly |
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Where are the island features found? |
The central Pacific |
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What are seamounts? |
Submarine mountains |
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What are coral atolls? |
Ring-shaped coral islands |
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What are the name of the mountains on the ocean floor? |
Emperor Seamounts |
