Astronomy: A Beginner's Guide to the Universe (8th Edition)
8th Edition
ISBN: 9780134087702
Author: Eric Chaisson, Steve McMillan
Publisher: PEARSON
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Question
Chapter 11, Problem 1RD
To determine
The composition of interstellar gas and dust.
Expert Solution & Answer
Answer to Problem 1RD
Interstellar gas consists of 90% hydrogen, 9% helium and 1% heavy elements. Interstellar gas consists of silicates, graphite and iron.
Explanation of Solution
The space between interstellar objects is filled with interstellar gas and dust. Interstellar gas is mostly individual atoms or tiny molecules whereas interstellar gas consists of clumps of atoms and molecules.
About 90% of interstellar gas is composed of hydrogen, 9% of helium and the rest 1% consists of heavy elements. Some of the heavy elements like carbon, oxygen, silicon, magnesium and iron are deficit in gas.
Even though the composition of gas is unsure, some evidence suggest that the dust is composed of silicates, graphite and iron. It also contains dirty ice, a frozen mixture of water ice with traces of ammonia, methane and other compounds.
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Chapter 11 Solutions
Astronomy: A Beginner's Guide to the Universe (8th Edition)
Ch. 11 - Prob. 1RDCh. 11 - Prob. 2RDCh. 11 - Prob. 3RDCh. 11 - Prob. 4RDCh. 11 - Prob. 5RDCh. 11 - Prob. 6RDCh. 11 - Prob. 7RDCh. 11 - Prob. 8RDCh. 11 - Prob. 9RDCh. 11 - Prob. 10RD
Ch. 11 - Prob. 11RDCh. 11 - Prob. 12RDCh. 11 - Prob. 13RDCh. 11 - Prob. 14RDCh. 11 - Prob. 15RDCh. 11 - Prob. 1CTCh. 11 - Prob. 2CTCh. 11 - Prob. 3CTCh. 11 - Prob. 4CTCh. 11 - Prob. 5CTCh. 11 - Prob. 6CTCh. 11 - Prob. 7CTCh. 11 - Prob. 8CTCh. 11 - Prob. 9CTCh. 11 - Prob. 10CTCh. 11 - Prob. 11CTCh. 11 - Prob. 12CTCh. 11 - Prob. 13CTCh. 11 - Prob. 14CTCh. 11 - Prob. 15CTCh. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Prob. 3PCh. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 6PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - Prob. 9PCh. 11 - Prob. 10P
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