Pearson eText Life in the Universe -- Instant Access (Pearson+)
4th Edition
ISBN: 9780135234457
Author: Jeffrey Bennett, Seth Shostak
Publisher: PEARSON+
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Textbook Question
Chapter 4, Problem 52IF
Geological Time. Geological time scales are often written in ways that can mask their significance. For each of the following pairs of times, state which one is larger and by how much:
- a. 25,000 years, 0.1 million years
- b. 4 million years, 0.05 billion years
- c. 0.1 billion years, 1 million years
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Chapter 4 Solutions
Pearson eText Life in the Universe -- Instant Access (Pearson+)
Ch. 4 - Briefly describe three aspects of geology that are...Ch. 4 - What do we mean by the geological record? Why is...Ch. 4 - Describe the three basic types of rock and the...Ch. 4 - How are sedimentary strata made, and how do they...Ch. 4 - Describe the technique of radiometric dating, and...Ch. 4 - How do fossils form? Do most living organisms...Ch. 4 - Summarize the geological time scale. What are...Ch. 4 - Prob. 8RQCh. 4 - Briefly describe how outgassing led to the origin...Ch. 4 - What was the heavy bombardment, and what effect...
Ch. 4 - Briefly describe Earths core-mantle-crust...Ch. 4 - Briefly describe the conveyorlike action of plate...Ch. 4 - Describe how plate tectonics shapes important...Ch. 4 - What evidence do we have for the operation of...Ch. 4 - What are the three requirements for a planetary...Ch. 4 - Briefly describe the mechanism by which the...Ch. 4 - What has happened to most of the carbon dioxide...Ch. 4 - What are ice ages, and what may cause them? What...Ch. 4 - Briefly summarize the key ways in which geology is...Ch. 4 - How do we think the Moon formed, and what evidence...Ch. 4 - We can expect that if there are paleontologists a...Ch. 4 - Nearly all the rocks I found in the lava fields of...Ch. 4 - Prob. 23TYUCh. 4 - Although Earth contains its densest material in...Ch. 4 - If you had a time machine that dropped you off on...Ch. 4 - If there were no plate tectonics on Earth, our...Ch. 4 - Without the greenhouse effect, there probably...Ch. 4 - If nitrogen were a greenhouse gas, our planet...Ch. 4 - We can learn a lot about Earths early history by...Ch. 4 - Prob. 30TYUCh. 4 - A rocks type (igneous, metamorphic, or...Ch. 4 - To learn a rocks age, we must (a) determine its...Ch. 4 - Radiometric dating now allows us to determine...Ch. 4 - Earths oceans formed (a) during the late stages of...Ch. 4 - We learn about the heavy bombardment by studying...Ch. 4 - Earth has retained a lot of internal heat...Ch. 4 - Plate tectonics is best described as a process...Ch. 4 - Earth has far less atmospheric carbon dioxide than...Ch. 4 - If Earth had more greenhouse gases in its...Ch. 4 - Snowball Earth refers to (a) one of a series of...Ch. 4 - The Age of Earth. Some people still question...Ch. 4 - Dating Planetary Surfaces. We have discussed two...Ch. 4 - Earth Without Differentiation. Suppose Earth had...Ch. 4 - Earth Without Plate Tectonics. Suppose plate...Ch. 4 - Feedback Processes in the Atmosphere. As the Sun...Ch. 4 - Geological Time. Geological time scales are often...Ch. 4 - Dating Lunar Rocks. You are analyzing Moon rocks...Ch. 4 - Carbon-14 Dating. The half-life of carbon-14 is...Ch. 4 - Martian Meteorite. Some unusual meteorites thought...Ch. 4 - Internal vs. External Heating. In daylight, Earths...Ch. 4 - Plate Tectonics. Typical motions of one plate...Ch. 4 - More Plate Tectonics. Consider a seafloor...Ch. 4 - Plate Tectonics and Us. Based on what you learned...
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