Why is dacite considered a fine-grained rock felsic rock?

A) It contains very little silica.
B) It contains a lot of silica and feldspar.
C) It contains a lot of iron and magnesium.
D) It contains an intermediate amount of silica.


Answer: B

Environmental & Atmospheric Sciences

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a. rift b. anticline c. overthrust d. syncline

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The specific heat of aluminum is 0.22 cal /g·°C Assuming that no heat is lost during the experiment, what will be the final temperature if 30.0 grams of aluminum at 95°C are added to 100.0 grams of water at 25°C?

A) 29°C B) 33°C C) 54°C D) 60°C

Environmental & Atmospheric Sciences

What is the fundamental subunit of matter?

A. compound B. mixture C. atom D. molecule

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When DNA is replicated in eukaryotes,

A) the new molecule of DNA consists of two newly synthesized strands. B) a molecule of messenger RNA (mRNA) is constructed using DNA as a template. C) the new molecule of DNA includes the bases A, C, T, and U. D) each new molecule of DNA consists of one old strand and one new strand.

Environmental & Atmospheric Sciences