Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 7, Problem 6QAP
To determine
The reason of high temperature of Venus than Mars.
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Why are the atmospheres of Venus and Mars mostly carbon dioxide?
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
Assume 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.
Chapter 7 Solutions
Understanding Our Universe
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QAPCh. 7 - Prob. 2QAPCh. 7 - Prob. 3QAPCh. 7 - Prob. 4QAPCh. 7 - Prob. 5QAP
Ch. 7 - Prob. 6QAPCh. 7 - Prob. 7QAPCh. 7 - Prob. 8QAPCh. 7 - Prob. 9QAPCh. 7 - Prob. 10QAPCh. 7 - Prob. 11QAPCh. 7 - Prob. 12QAPCh. 7 - Prob. 13QAPCh. 7 - Prob. 14QAPCh. 7 - Prob. 15QAPCh. 7 - Prob. 16QAPCh. 7 - Prob. 17QAPCh. 7 - Prob. 18QAPCh. 7 - Prob. 19QAPCh. 7 - Prob. 20QAPCh. 7 - Prob. 21QAPCh. 7 - Prob. 22QAPCh. 7 - Prob. 23QAPCh. 7 - Prob. 24QAPCh. 7 - Prob. 25QAPCh. 7 - Prob. 26QAPCh. 7 - Prob. 27QAPCh. 7 - Prob. 28QAPCh. 7 - Prob. 29QAPCh. 7 - Prob. 30QAPCh. 7 - Prob. 31QAPCh. 7 - Prob. 32QAPCh. 7 - Prob. 33QAPCh. 7 - Prob. 34QAPCh. 7 - Prob. 35QAPCh. 7 - Prob. 36QAPCh. 7 - Prob. 37QAPCh. 7 - Prob. 38QAPCh. 7 - Prob. 39QAPCh. 7 - Prob. 40QAPCh. 7 - Prob. 41QAPCh. 7 - Prob. 42QAPCh. 7 - Prob. 43QAPCh. 7 - Prob. 44QAPCh. 7 - Prob. 45QAP
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- Compare the current atmospheres of Earth, Venus, and Mars in terms of composition, thickness (and pressure at the surface), and the greenhouse effect.arrow_forwardSince Mars has an atmosphere and it is composed mostly of a greenhouse gas, why isn't there a significant greenhouse effect to warm its surface?arrow_forwardBecause Venus has a very feeble magnetic field, the solar wind collides with its atmosphere, instead of being deflected by magnetic forces. Suppose that if a solar wind particle strikes the atmosphere of Venus, all its kinetic energy will be absorbed.arrow_forward
- The clouds that surround Venus are so thick that the planet actually absorbs less sunlight than the Earth. Nevertheless, Venus has a surface temperature of more than 400 C. Which of these best explains this high surface temperature?arrow_forwardEvidence exists that Mars may have had oceans 0.500 km deep in its early history. We don't know what the atmospheric pressure on Mars was back then, but some studies suggest it may have been as high as 50,000 Pa. What would have been the highest pressure at the bottom of these oceans? Density of water is 1000 kg/m³, gmars = 3.71 m/s².arrow_forwardAccording to http://hyperphysics.phy-str.gsu.edu/hbase/solar/venusenv.html, the atmosphere of Venus is approximately 96.5% CO2 and 3.5% N2 by volume. On the surface, where the temperature is about 750 K and the pressure is about 90 atm, what is the density of the atmosphere?arrow_forward
- Which 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_forwardEarth's atmosphere contains just a small amount of carbon dioxide at the present time, because Earth's volcanoes did not outgas as much carbon dioxide as those on Mars and Venus Chemical reactions with other gases destroyed the carbon dioxide and replaced it with Nitrogen Carbon dioxide dissolves in water, and now most of it is contained in oceans and carbonate rocks Most of the carbon dioxide was lost during the 'heavy bombardment' phasearrow_forwardWhat is the runaway greenhouse effect, and how might it have altered the climate of Venus?arrow_forward
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