Answer :
Final answer:
The average speed at which the Pacific plate was moving between the formation of Kauai and Nihoa from 7.2 million years ago to 4.7 million years ago was 0.08 km/million years.
Explanation:
In order to calculate the speed at which the Pacific plate was moving between 7.2 million years ago and 4.7 million years ago, we need to know the distance it traveled during that time period. Let's assume that Kauai and Nihoa are approximately 200 kilometers apart. The time difference between the two periods is 7.2 million years - 4.7 million years = 2.5 million years.
Using the formula:
Average Speed = Distance / Time
We can calculate:
Average Speed = 200 km / 2.5 million years = 0.08 km/million years.
Therefore, the Pacific plate was moving at an average speed of 0.08 km/million years between the formation of Kauai and Nihoa from 7.2 million years ago to 4.7 million years ago.
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