3
QuizMultiple Choice

Characteristics of the Seafloor

Question 3 • RMA FL-2001310-Earth/Space Science Semester 2

Which statement describes the cyclic nature of seafloor spreading?

Answer
A
Continents are created.
B
New oceanic crust is created.
C
Volcanoes erupt and remove crust.
D
Old crust gets thicker at subduction zones.

Explanation

Seafloor spreading continually forms new oceanic crust as magma rises and cools at mid-ocean ridges. That crust moves away from the ridge and is eventually recycled into the mantle at subduction zones, making the process cyclic. So the statement “New oceanic crust is created” describes seafloor spreading.

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