The black sand beaches in Hawaii are comprised of ________.
A)fragments of black coral
B)fragments of basaltic volcanic rock
C)fragments of obsidian glass
D)ground up bottle and other debris placed there by Hawaii tourist bureaus.There is not natural sand in Hawaii because there is no quartz

Question

Quizplus · Accepted Answer

The black sand beaches in Hawaii are mainly made up of fragments of basaltic volcanic rock, which was pulverized by the powerful ocean waves. It is a result of volcanic activity in the area, and not due to any artificial means. Option A is not correct as there is no black coral found on the beaches. Option C represents obsidian glass and option D is purely fictional.

The Black Sand Beaches in Hawaii Are Comprised of ________