Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 9, Problem 7TQ
To determine
Explain about the composition and internal structure of Venus, Earth, and Mars.
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Which of the following properties of Mars would be altered by the process of terraforming?
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Chapter 9 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 9 - How do Mercury, Venus, and Mars each compare with...Ch. 9 - How do the interior structures of Mercury, Venus,...Ch. 9 - What is the surface of Mercury like?Ch. 9 - Does Mercury have an atmosphere? Why or why not?Ch. 9 - Prob. 5QFRCh. 9 - What is the dominant gas in Venuss atmosphere? How...Ch. 9 - What are the clouds of Venus made of?Ch. 9 - Why is Venus so hot?Ch. 9 - Can we see the surface of Venus? Why or why not?...Ch. 9 - Prob. 10QFR
Ch. 9 - Prob. 11QFRCh. 9 - What are the Martian polar caps composed of?Ch. 9 - (9.3) What is the Martian atmosphere like?Ch. 9 - What is the evidence that Mars once had running...Ch. 9 - Prob. 15QFRCh. 9 - Prob. 16QFRCh. 9 - Prob. 17QFRCh. 9 - Prob. 18QFRCh. 9 - Prob. 1TQCh. 9 - Prob. 2TQCh. 9 - Prob. 3TQCh. 9 - Prob. 4TQCh. 9 - Prob. 5TQCh. 9 - Prob. 6TQCh. 9 - Prob. 7TQCh. 9 - Prob. 8TQCh. 9 - What role might planetesimal impacts have played...Ch. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Olympus Mons is 26 kilometers above the...Ch. 9 - Prob. 6PCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 - Prob. 6TYCh. 9 - Prob. 7TYCh. 9 - Prob. 8TY
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- The 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_forwardCompare the current atmospheres of Earth, Venus, and Mars in terms of composition, thickness (and pressure at the surface), and the greenhouse effect.arrow_forwardIs it likely that life ever existed on either Venus or Mars? Justify your answer in each case.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_forwardWhy are the atmospheres of Venus and Mars mostly carbon dioxide?arrow_forwardHow will Carbon Dioxide help the Martian atmosphere?arrow_forward
- The fraction of the energy flux received which is reflected into space is the albedo of Venus, av, which is about 0.76. The fraction of the energy flux which is absorbed is then (1-av) = 1. - 0.76 = 0.24. So the amount of energy actually absorbed by Venus in each second is Lv = (1-av)Ev. Lv = (1-av)Ev = ___________________ ergs/s And next calculate the effective temperature of Venus: Tv4 = (Lv/(4pdv2))/s = Lv/(4spdv2) = __________________ K4 and taking the square root of Tv4 twice in succession we get the effective Temperature Tv: Tv = [Lv/(4spdv2)]0.25 = _________________ K Calculate Venus' emittance assuming that the Venus' actual temperature, Tvr, is 472o C = 745 K: ev = Lv/(4pdv2s Tvr4) = __________________ .arrow_forwardThe average distance to Mars is 1.5 AU. If you send a command using radio waves (a form of light!) to a rover on the Mars surface, how long will you have to wait before you receive the response? Assume the probe responds immediately after it receives the command.arrow_forwardCalculate the energy flux density, Fm , at the average distance of Mars from the Sun, rm , (energy flux divided by surface area of sphere). Mars' distance from the Sun = rm = 2.279 x 1013 cmFm = L /(4prm2) = ________________ ergs/s Next Calcuate the Amount of Solar Energy absorbed by Mars is the surface area of Mars which is facing the Sun (1/2 of Mars' surface area = 4pdm2 / 2 = 2pdm2 ) . Where dm = 3.398 x 106 cm is the radius of Mars. So Mars receives :arrow_forward
- (b) Show that the equilibrium temperature of Venus is right for liquid water, given that it lies = 3.85 × 1026 W) and assuming a at a distance of d = 1.09 × 108 km from the Sun (Lo mean albedo of 0.45. Explain why, in reality, Venus is too hot for liquid water.arrow_forwardPart of the "Mars Direct" mission plan involves rotating the spacecraft on its way to Mars to provide the astronauts with a simulation of Martian gravity. True False Due to the need to catch the correct launch window for the trip home, the total duration for a round trip to Mars will have to be at most 18 months at least 18 months at least 30 months at most 12 months at least 24 monthsarrow_forwardWhich 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.arrow_forward
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