8.Is the rock dark colored, glassy, with gas bubbles in it? (Does it have some jagged or sharp points?)

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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STREAK 1
STREAK 2
STREAK 3
Identify your rock smaple based on its physical characteristics using the provided dichotomous keys.
8.Is the rock dark colored, glassy, with gas bubbles in it? (Does it have some jagged or sharp points?)
O A. The rock is dark colored, glassy, with gas bubbles in it.
O B. The rock is gray or black, has a few gas pockets in it, and has no layers. It is not glassy.
O C. Descriptions are not aplicable in the rock sample.
Transcribed Image Text:STREAK 1 STREAK 2 STREAK 3 Identify your rock smaple based on its physical characteristics using the provided dichotomous keys. 8.Is the rock dark colored, glassy, with gas bubbles in it? (Does it have some jagged or sharp points?) O A. The rock is dark colored, glassy, with gas bubbles in it. O B. The rock is gray or black, has a few gas pockets in it, and has no layers. It is not glassy. O C. Descriptions are not aplicable in the rock sample.
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