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 30QAP
To determine
The reason for clear view of surface of Mars but not Venus.
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The average distance from Earth 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 rover responds immediately after it receives the command
Name one interesting fact about mars.
On the night side of Venus, we find that the brightest wavelength, that is the wavelength this region of the planet is emitting the most energy, is about 3.9 micrometres (3.9x10-6 meters). Approximately how warm is the planet in this region?
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
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- List several ways that Venus, Earth, and Mars are similar, and several ways they are different.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_forwardWhat is a dust devil? Would you expect to feel more of a breeze from a dust devil on Mars or on Earth? Explain.arrow_forward
- 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_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_forwardWhich 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 nitrogenarrow_forward
- What will you notice as you fly over the surface of Venus?arrow_forwardHow long, deep, and wide would a terrestrial chasm have to be to have the same proportions relative to the Earth that Valles Marineris has to Mars?arrow_forwardHow could you argue that mars has now or has at some point in the past had an atmosphere and flowing liquid on the surface?arrow_forward
- Since 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_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_forwardThe 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_forward
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