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Author Question: A vesicular felsic rock is called a: a. pumice. b. scoria. c. obsidian. d. tuff. e. volcanic ... (Read 86 times)

saraeharris

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on: Jul 15, 2018

A vesicular felsic rock is called a:
  a. pumice.
  b. scoria.
  c. obsidian.
  d. tuff.
  e. volcanic breccia



Question 2

Natural glass, such as obsidian, forms when magma:a.
   cools too rapidly for crystals to form.
  b. cools rapidly and very tiny crystals form.
  c. cools too slowly for crystals to form.
  d. doesn't cool.
  e. none of these.



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jesse.fleming

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Reply #1 on: Jul 15, 2018
Answer to Question 1

A

Answer to Question 2

A


saraeharris

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Reply 2 on: Jul 15, 2018
Wow, this really help

Liamb2179

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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