lilrider7749 lilrider7749

28-06-2018
Computers and Technology

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Under which condition below would you expect a glassy extrusive rock like obsidian to form?

A. Within a zone of fractured rocks below Earth's surface
B. 25 km beneath Earth's surface
C. Lava slowly flowing out of a fracture in Earth's surface
D. Quick cooling on Earth's surface

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LoliArual LoliArual

28-06-2018

Hihi!

The correct answer would be D. Quick cooling on Earth's surface! Obsidian isa volcanic rock formed by the rapid solidification of lava without crystallization!

I hope I helped!
-Loliarual

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Plebdough Plebdough

12-03-2019

Quick cooling on Earth's surface (APEX Class ;)

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