What is the distance from Midway Island to L?’ihi, in kilometers? What is the difference between their ages? What has been the rate of movement of the Pacific plate, in centimeters per year, over this time frame?
What will be an ideal response?
The distance is approximately 2400 km. Midway is 27.7 million years old. Since 1 km equals 100,000 cm, 2400 km is equal to 240,000,000 cm. Since both the distance and age are in the millions, the math to find the rate of movement is 240 (distance in millions of centimeters)/27.7 (age in millions of years) = 8.6 cm/ yr. The conversion from km to centimeters will come in handy in the next section as well.
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When you are in the way of a fast-moving object and can't get out of its way, you will suffer a smaller force of impact if you decrease its momentum over a
A) long time. B) short time. C) long time OR short time (same way either way).
What European countries have the highest and lowest rates of natural population increase?
What will be an ideal response?
Hot spots form linear island chains because
A. they occur along the mid-oceanic ridges. B. the plate moves relative to the underlying hot spot. C. they are aligned with trenches formed by subduction.
Judge the following sentence according to the criteria given below: Usually a parasite does not rob enough energy to kill the host BECAUSE if the host dies, so does the parasite
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.