Life in the Universe (4th Edition)
4th Edition
ISBN: 9780134089089
Author: Jeffrey O. Bennett, Seth Shostak
Publisher: PEARSON
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Chapter 8, Problem 56IF
Atmospheric Mass of Mars. The weaker gravity of Mars means that 1 bar of pressure on Mars would be that exerted by about 25,000 kilograms pushing down on each square meter of the martian surface. Based on this approximation, the atmospheric pressure on Mars (see Table 8.1), and the size of Mars, estimate the total mass of Mars’s atmosphere. Compare to Earth's atmospheric mass from Problem 55.
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Two mirrors meet an angle, a, of 105°. A ray of light is incident upon mirror A at an angle, i, of
42°. The ray of light reflects off mirror B and then enters water, as shown below:
Incident
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Note: This diagram is not to
scale.
a
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Water (n = 1.34)
1) Determine the angle of refraction of the ray of light in the water.
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Chapter 8 Solutions
Life in the Universe (4th Edition)
Ch. 8 - Briefly summarize the evidence, both real and...Ch. 8 - What would it be like to walk on Mars today?...Ch. 8 - Why isnt liquid water stable at the martian...Ch. 8 - How do martian seasons differ from Earth seasons?...Ch. 8 - Give a brief overview of the geography and major...Ch. 8 - How do we know that different regions of the...Ch. 8 - Summarize the evidence suggesting that Mars must...Ch. 8 - What evidence suggests that water might still flow...Ch. 8 - Why do we conclude that Mars must once have had a...Ch. 8 - What is the leading hypothesis concerning how Mars...
Ch. 8 - How and why does Marss axis tilt change with time,...Ch. 8 - Based on all the geographic and geological...Ch. 8 - Briefly summarize the Viking experiments and their...Ch. 8 - What is the potential significance of atmospheric...Ch. 8 - Briefly summarize plans for Mars exploration over...Ch. 8 - Discuss the issue of biological contamination in...Ch. 8 - Summarize the scientific pros and cons of sending...Ch. 8 - What do we mean by terraforming Mars? Is it...Ch. 8 - How do we know that ALH84001 really came from...Ch. 8 - Briefly summarize the possible evidence of past...Ch. 8 - The first human explorers on Mars discover that...Ch. 8 - We discover a string of active volcanoes in the...Ch. 8 - We find underground pools of water on the slopes...Ch. 8 - We discover that Mars was subjected to global,...Ch. 8 - A future orbiter finds a plume of volcanic gas...Ch. 8 - We find a lake of liquid water filling a small...Ch. 8 - The first fossils discovered on Mars come from the...Ch. 8 - A sample return mission finds fossil evidence not...Ch. 8 - We discover that the martian polar caps have in...Ch. 8 - We find rocks on Mars showing clearly that the...Ch. 8 - When we say that liquid water is unstable on Mars,...Ch. 8 - Marss seasonal winds are driven primarily by (a)...Ch. 8 - Olympus Mons is (a) a giant volcano; (b) a huge...Ch. 8 - We can recognize the oldest surface regions of...Ch. 8 - Minerals in surface rock studied by the martian...Ch. 8 - Rivers on Mars (a) have never existed; (b) existed...Ch. 8 - Which must be true if Mars was warmer and wetter...Ch. 8 - Which of the following fundamental properties of...Ch. 8 - According to the leading hypothesis, if Mars once...Ch. 8 - The Viking experiments found (a) no evidence of...Ch. 8 - The Role of the Martians. Percival Lowell may have...Ch. 8 - Learning from Past Mistakes. The Viking missions...Ch. 8 - Hold Your Breath. If you held your breath, would...Ch. 8 - Miniature Mars. Suppose Mars were significantly...Ch. 8 - Larger Mars. Suppose Mars were significantly...Ch. 8 - Civilization on Mars. Based on what we can see on...Ch. 8 - Martian Fossil Hunting. On Earth, we cannot find...Ch. 8 - Future Landing Site. Suppose you were in charge of...Ch. 8 - Terraforming Mars. Make a list of the pros and...Ch. 8 - Mars Movie Review. Watch one of the many science...Ch. 8 - Interior Heat. Compare the surface areatovolume...Ch. 8 - Atmospheric Mass of Earth. What is the total mass...Ch. 8 - Atmospheric Mass of Mars. The weaker gravity of...Ch. 8 - Past Gas on Mars. Models suggest that Mars today...Ch. 8 - Lessons from Mars. Discuss the nature of the...Ch. 8 - Human Exploration of Mars. Should we send humans...Ch. 8 - Current Mars Missions. Pick one of the Mars...Ch. 8 - Future Mars Missions. Pick one of the Mars...
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