Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Question
Chapter 21, Problem 19AC
To determine
From the following options, theterm signifies time of recent life erais:
Cenozoic.
Mesozoic.
Paleozoic.
Phanerozoic.
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Chapter 21 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 21 -
1. Evidence of former life is called...Ch. 21 -
2. In the early 1800s, William Smith noted that...Ch. 21 - Prob. 3ACCh. 21 -
4. The meaning of the word fossil is
a. petrified...Ch. 21 - Prob. 5ACCh. 21 - Prob. 6ACCh. 21 -
7. Fossils are most often found in what type...Ch. 21 - Prob. 8ACCh. 21 - Prob. 9ACCh. 21 - Prob. 10AC
Ch. 21 -
11. Distinctive fossils of plants or animals that...Ch. 21 - Prob. 12ACCh. 21 - Prob. 13ACCh. 21 - Prob. 14ACCh. 21 - Prob. 15ACCh. 21 - Prob. 16ACCh. 21 - Prob. 17ACCh. 21 - Prob. 18ACCh. 21 - Prob. 19ACCh. 21 - Prob. 20ACCh. 21 - Prob. 21ACCh. 21 - Prob. 22ACCh. 21 - Prob. 23ACCh. 21 - Prob. 24ACCh. 21 - Prob. 25ACCh. 21 -
26. Which of the basic guiding principles used to...Ch. 21 - Prob. 27ACCh. 21 - Prob. 28ACCh. 21 -
29. Correlation and relative dating of rock units...Ch. 21 - Prob. 30ACCh. 21 -
31. You would expect to find the least number of...Ch. 21 - Prob. 32ACCh. 21 - Prob. 33ACCh. 21 - Prob. 34ACCh. 21 -
35. An early record about the discovery of...Ch. 21 - Prob. 36ACCh. 21 - Prob. 37ACCh. 21 -
38. A geologic feature that cuts across or is...Ch. 21 - Prob. 39ACCh. 21 - Prob. 40ACCh. 21 - Prob. 41ACCh. 21 - Prob. 42ACCh. 21 - Prob. 43ACCh. 21 - Prob. 44ACCh. 21 - Prob. 45ACCh. 21 - Prob. 46ACCh. 21 -
1. What is the principle of uniformity? What are...Ch. 21 -
2. What is the geologic time scale? What is the...Ch. 21 -
3. Why does the rock record go back only 3.8...Ch. 21 -
4. Do igneous, metamorphic, or sedimentary rocks...Ch. 21 -
5. What major event marked the end of the...Ch. 21 -
6. Briefly describe the principles and...Ch. 21 - Prob. 7QFTCh. 21 -
8. Describe how the principles of superposition,...Ch. 21 - Prob. 9QFTCh. 21 - Prob. 10QFTCh. 21 -
11. Describe some of the things that fossils can...Ch. 21 -
1. Analyze the significant reasons that a pot...Ch. 21 - Prob. 2FFACh. 21 -
4. What are the significant differences between...Ch. 21 -
5. Summarize why the different blocks of time...Ch. 21 - Prob. 5FFACh. 21 -
6. The history of Earth has been one of many...Ch. 21 - Prob. 1PEACh. 21 - Prob. 2PEACh. 21 - Prob. 3PEACh. 21 - Prob. 4PEACh. 21 - Prob. 5PEACh. 21 - Prob. 6PEACh. 21 - Prob. 7PEACh. 21 - Prob. 8PEACh. 21 - Prob. 9PEACh. 21 - Prob. 10PEACh. 21 - Prob. 11PEACh. 21 - Prob. 12PEACh. 21 - Prob. 13PEACh. 21 - Prob. 14PEACh. 21 - Prob. 15PEACh. 21 -
1. A sequence of deep marine shale that spans the...Ch. 21 - Prob. 2PEBCh. 21 - Prob. 3PEBCh. 21 -
4. The absolute age of a rock is its age in...Ch. 21 -
5. The absolute age (age in years) of sedimentary...Ch. 21 -
6. A sequence of rocks consists of a flat-lying...Ch. 21 -
7. A student examining a roadcut excavated...Ch. 21 - 8. A cliff has the following sequence...Ch. 21 - Prob. 9PEBCh. 21 - Prob. 10PEBCh. 21 - Prob. 11PEBCh. 21 - Prob. 12PEBCh. 21 - Prob. 13PEBCh. 21 - Prob. 14PEBCh. 21 -
15. Two outcrops separated by a distance of 32 km...
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- What biologic event is used by geologists to separate the Tertiary period from the Quaternary period?arrow_forward1. How old is a rock if the mineral biotite from the rock has 85,000 40K atoms and 15.000 40Ar atoms? Note: 40K decays to 40Ar with half-life = 1.3 billion years. 2. Isotopic analysis of a granitic intrusion indicates that 6.25 % of the original 40K is present. Analysis of a nearby basaltic intrusion indicates that 25 % of the original amount of 40K is present. What is the absolute age of both the granitic intrusion and the dike? What is the relationship between them? I. 3. Pebbles of an igneous rock are incorporated within a conglomerate. The pebbles yield a radiometric age of 200 million years. What can you say about age of the conglomerate based on this data? 4. A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced. Calculate the age of the rock if you know that the half-life of the parent isotope is 20 million years.arrow_forward
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