Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 10, Problem 11E
Describe two anomalous features of the rotation of Venus and what might account for them.
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Describe the planet Venus. Attributes like atmosphere, rotation, etc. should be included in your description.
what is the temperate of the core of venus?
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
Chapter 10 Solutions
Astronomy
Ch. 10 - List several ways that Venus, Earth, and Mars are...Ch. 10 - Compare the current atmospheres of Earth, Venus,...Ch. 10 - How might Venus’ atmosphere have evolved to its...Ch. 10 - Describe the current atmosphere on Mars. What...Ch. 10 - Explain the runaway refrigerator effect and the...Ch. 10 - What evidence do we have that there was running...Ch. 10 - What evidence is there that Venus was volcanically...Ch. 10 - Why is Mars red?Ch. 10 - What is the composition of clouds on Mars?Ch. 10 - What is the composition of the polar caps on Mars?
Ch. 10 - Describe two anomalous features of the rotation of...Ch. 10 - How was the Mars Odyssey spacecraft able to detect...Ch. 10 - What are the advantages of using radar imaging...Ch. 10 - Venus and Earth are nearly the same size and...Ch. 10 - Why is there so much more carbon dioxide in the...Ch. 10 - If the Viking missions were such a rich source of...Ch. 10 - Compare Mars with Mercury and the Moon in terms of...Ch. 10 - Contrast the mountains on Mars and Venus with...Ch. 10 - We believe that all of the terrestrial planets had...Ch. 10 - Is it likely that life ever existed on either...Ch. 10 - Suppose that, decades from now, NASA is...Ch. 10 - We believe that Venus, Earth, and Mars all started...Ch. 10 - One source of information about Mars has been the...Ch. 10 - The runaway greenhouse effect and its inverse, the...Ch. 10 - In what way is the high surface temperature of...Ch. 10 - What is a dust devil? Would you expect to feel...Ch. 10 - Near the martian equator, temperatures at the same...Ch. 10 - Estimate the amount of water there could be in a...Ch. 10 - At its nearest, Venus comes within about 41...Ch. 10 - If you weigh 150 lbs. on the surface of Earth, how...Ch. 10 - Calculate the relative land area-that is, the...Ch. 10 - The closest approach distance between Mars and...
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- Describe and explain changes in Venuss surface temperature during the planets history.arrow_forwardWhat evidence can you give that Venus once had significant amounts of water? Where did that water come from? Where did it go?arrow_forwardWould you expect as many impact craters per unit area on the surface of Venus as on the surface of Mars? Why or why not?arrow_forward
- What is the escape velocity is km/s from Venus' exosphere, which begins about 202 km above the surface ? Assume the gravitational constant is G= 6.67 x10-11m3 kg-1s-2, and that's Venus has a mass of 5.2e+24 kg and a radius of 6500.0 kmarrow_forwardWhat are two ways venus is similar to earth?arrow_forwardWhich of the following is NOT best explained by Venus's extreme greenhouse effect? a. its extremely high surface temperature b. its extremely uniform surface temperature c. its extremely low surface wind speeds d. its lack of magnetismarrow_forward
- Which of these things did the Voyager spacecraft discover about Enceladus in the early 1980s, indicating that it is somewhat unusual among planetary bodies in our solar system? Check the TWO items that apply. a It has a thick atmosphere, made mostly of nitrogen. b It has the darkest, least reflective surface of all the known planetary bodies. c It is the brightest (i.e. most reflective) object in the solar system. d The entire surface is more heavily-cratered than any other body in our solar system. e Its surface is very smooth in some places.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_forwardHow might Venus’ atmosphere have evolved to its present state through a runaway greenhouse effect?arrow_forward
- Atmospheric jet streams on Venus travel at about 300 km/hr. How long does it take a jet stream to circle the planet once? How many times does the jet stream circle the planet during one solar rotation of the planet? (Notes: The circumference of a sphere is c = d, where d is diameter. The diameter and solar rotation period of Venus are given in Celestial Profile: Venus.)arrow_forwardList several ways that Venus, Earth, and Mars are similar, and several ways they are different.arrow_forwardWhat 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_forward
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