Foundations of Astronomy, Enhanced
13th Edition
ISBN: 9781305980686
Author: Michael A. Seeds; Dana Backman
Publisher: Cengage Learning US
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Chapter 22, Problem 6DQ
To determine
The hypothesis on an event which explain slow rotation and recent geological resurfacing of Venus.
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Which of the following planetary traits is well established?
choose one of the following:
a) Mercury has a similar compositon to that of our moon, in that they both have a substantial metal content.
b) Venus rotates more rapidly than Earth, but in the opposite direction.
c) Earth's atmosphere exhibits a slightly stronger greenhouse effect than that seen on Venus.
d)Astronomers have precisely calculated the mass of Mercury thanks to artificial satellites sent from Earth.
If we moved Venus out to 1 AU from the Sun (same as Earth), Venus would probably
a.
become more like Earth, with oceans and a temperate climate
b.
remain hot, dry, and dead because it's permanently lost its oceans
c.
become more like Mars, losing most of its atmosphere and freezing
d.
become much less geologically active due to decreased solar heating
Which of the following properties of Mars would be altered by the process of terraforming?
its size
its atmospheric chemistry
its distance from the Sun
its geological activity
its magnetic field
Even if we were to terraform Mars to give it an Earthlike climate, that climate would not be as stable as Earth's, due to Mars's lack of
a large moon
volcanic activity
an iron core
atmospheric nitrogen
Chapter 22 Solutions
Foundations of Astronomy, Enhanced
Ch. 22 - Describe four ways Venus is similar to Earth...Ch. 22 - Why might you expect that Venuss surface...Ch. 22 - Describe and explain changes in Venuss surface...Ch. 22 - Describe sources and sinks of CO2, if any, on...Ch. 22 - Does Venuss surface experience meteorite impacts...Ch. 22 - Describe evidence of crustal movement (horizontal...Ch. 22 - Why isnt the crust of Venus broken into mobile...Ch. 22 - Do either Venus or Mars have composite volcanoes?...Ch. 22 - What evidence can you give that Venus once had...Ch. 22 - What evidence shows that Venus has been resurfaced...
Ch. 22 - Describe four ways Mars is similar to Earth today....Ch. 22 - How are todays atmospheres of Venus and Mars...Ch. 22 - Where is the oxygen on Mars today? How do you...Ch. 22 - Why doesnt Mars have folded mountain ranges like...Ch. 22 - Why isnt the crust of Mars broken into mobile...Ch. 22 - What were the canals on Mars eventually found to...Ch. 22 - How can planetary scientists estimate the ages of...Ch. 22 - Propose an explanation for the nearly pure CO2...Ch. 22 - Prob. 19RQCh. 22 - Describe sources and sinks of CO2, if any, on Mars...Ch. 22 - Does Marss surface experience any meteorite...Ch. 22 - Describe evidence of crustal movement (horizontal...Ch. 22 - What surface features on Mars today indicate that...Ch. 22 - Why are Phobos and Deimos non-spherical? Why is...Ch. 22 - How are a weather radar map and an image of a...Ch. 22 - Prob. 1DQCh. 22 - Prob. 2DQCh. 22 - Prob. 3DQCh. 22 - Prob. 4DQCh. 22 - Prob. 5DQCh. 22 - Prob. 6DQCh. 22 - Prob. 7DQCh. 22 - Prob. 8DQCh. 22 - Atmospheric jet streams on Venus travel at about...Ch. 22 - How long would radio signals take to travel from...Ch. 22 - What is the maximum angular diameter of Venus as...Ch. 22 - The Pioneer Venus orbiter circled Venus with a...Ch. 22 - Calculate the velocity of Venus as it orbits the...Ch. 22 - Prob. 6PCh. 22 - If the Magellan spacecraft transmitted radio...Ch. 22 - Prob. 8PCh. 22 - What is the angular size of Phobos observed from...Ch. 22 - Prob. 10PCh. 22 - Prob. 11PCh. 22 - Deimos is about 13 km in diameter and has a...Ch. 22 - Look at Figure 21-1. Compare temperature profiles...Ch. 22 - Look at the map of the Hawaiian chain of islands...Ch. 22 - Look at Figure 21-11. Which molecule(s) can escape...Ch. 22 - Volcano Sif Mons on Venus is shown in this radar...Ch. 22 - Olympus Mons on Mars is an enormous volcano. In...
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- What evidence is there that Venus was volcanically active about 300600 million years ago?arrow_forwardDescribe two anomalous features of the rotation of Venus and what might account for them.arrow_forwardThe runaway greenhouse effect and its inverse, the runaway refrigerator effect, have led to harsh, uninhabitable conditions on Venus and Mars. Does the greenhouse effect always cause climate changes leading to loss of water and life? Give a reason for your answer.arrow_forward
- What are the advantages of using radar imaging rather than ordinary cameras to study the topography of Venus? What are the relative advantages of these two approaches to mapping Earth or Mars?arrow_forwardIs it likely that life ever existed on either Venus or Mars? Justify your answer in each case.arrow_forwardAssume that Venus has an isothermal atmosphere with a surface temperature of 750 K. The surface pressure of Venus is 90 times the Earth's surface pressure which is about 1013mb. Also assume that the carbon dioxide dominant atmosphere of Venus is photodissociated and oxygen atoms are produced. These oxygen atoms stop the solar wind at the ionopause distance where the atmospheric pressure of Venus and the dynamic pressure of the solar wind are in balance. Accordingly, calculate the lonopause distance of the planet Venus if the solar wind density is 7 #/cm² and solar wind speed is 410 km/sec.arrow_forward
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