Using the map of seafloor age from question 3, the average rate of seafloor spre
ID: 112694 • Letter: U
Question
Using the map of seafloor age from question 3, the average rate of seafloor spreading is:
Question 4 options:
Is about the same in both the Atlantic Ocean (along the Mid-Atlantic Ridge) and the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is about the same in both the Atlantic Ocean and Pacific Ocean.
Actually, you can not determine the average rate of seafloor spreading based solely on the map from question 3.
Slower in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is about the same in both the Atlantic Ocean and Pacific Ocean.
Faster in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is older in the Atlantic Ocean and younger in the Pacific Ocean.
Slower in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is younger in the Pacific Ocean and older in the Atlantic Ocean.
a)Is about the same in both the Atlantic Ocean (along the Mid-Atlantic Ridge) and the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is about the same in both the Atlantic Ocean and Pacific Ocean.
b)Actually, you can not determine the average rate of seafloor spreading based solely on the map from question 3.
c)Slower in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is about the same in both the Atlantic Ocean and Pacific Ocean.
d)Faster in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is older in the Atlantic Ocean and younger in the Pacific Ocean.
e)Slower in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is younger in the Pacific Ocean and older in the Atlantic Ocean.
Map of Seafloor Age 4 180.0 154.3 147.7 O 136. v120.4 3 E83.5 2 O67.7 55.9 47.9 O40.1 O33.1 20.1 9.7 0.0Explanation / Answer
Mid oceanic ridges are divided into some sub categories depending upon their speed.
A slow spreading ridge will have older rocks both side of the ridge for a given time compared to a fast spreading ridge.
From the given map it is clearly seen that the rock units are much more older in Atlantic ocean, on both sides of the mid oceanic ridge as compared to the pacific ocean.
Thus the correct choice will be,
e)Slower in the Atlantic Ocean (along the Mid-Atlantic Ridge) than the Pacific Ocean (East Pacific Rise, west of South America) because, for a given distance from the ridge axis, the age of the seafloor is younger in the Pacific Ocean and older in the Atlantic Ocean.
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