Midway Island, to the northwest of Hawai‘i, is also part of the Hawaiian chain and is believed to have been produced by the same hot spot. Midway is about 2430 kilometers (1510 miles) from the K?-lauea volcano on Hawai‘i. Use the average rate of plate movement you calculated in problem 2 to estimate the age of volcanic rocks you would expect to find on Midway Island.
240 km = 2,400,000,000 mm ÷ 110 = about 22 million years
1510 miles = 95,673,600 ÷ 4.3 = about 22 million years
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