The red dots that coincide with volcanically active island chains shown on the map are called
A)hot spots.
B)mid-ocean ridges.
C)abyssal plains.
D)island arcs.

Question

The red dots that coincide with volcanically active island chains shown on the map are called 
A)hot spots. 
B)mid-ocean ridges. 
C)abyssal plains. 
D)island arcs.

Quizplus · Accepted Answer

The red dots on the map that coincide with volcanically active island chains are known as hot spots. Hot spots are areas where magma from within the Earth's mantle rises to the surface, creating volcanic activity. Island arcs, in contrast, are formed by subduction zones where two tectonic plates converge, and one plate is forced beneath the other, creating a chain of volcanic islands. Mid-ocean ridges are underwater mountain ranges where tectonic plates move apart, while abyssal plains are flat areas on the ocean floor.

The Red Dots That Coincide with Volcanically Active Island Chains