Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 3, Problem 31Q
To determine
Whether a person, who is watching a lunar eclipse from somewhere on Earth’s night side, will be able to see the Moon enter the Earth’s shadow from the East or from the West.
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(a) Explain the relative positions of the Earth, Sun, and Moon during a solar eclipse?
(b) Explain the relative positions of the Earth, Sun, and Moon during a lunar eclipse?
(c) Does a solar eclipse occur during a full moon, a new moon, or a quarter moon?
(d) Does a lunar eclipse occur during a full moon, a new moon, or a quarter moon?
(e) What is the name of the total shadow during a solar eclipse?
() What is the name of the partial shadow during a solar ecipse?
Please answer the following question(s):
1. A tree, 20-feet tall, casts a 15-feet long shadow.
Shadow 15 feet
What is the angle of elevation of the sun in the sky?
0 =
O
Tree
sun
20 feet
Lunar eclipses are always eclipses of a full Moon. That is, the Moon is always seen full just before and after Earth’s shadow passes over it. Why is this? Why can we never have a lunar eclipse when the Moon is in its crescent or half-moon phase?
Chapter 3 Solutions
Universe
Ch. 3 - Prob. 1CCCh. 3 - Prob. 2CCCh. 3 - Prob. 3CCCh. 3 - Prob. 4CCCh. 3 - Prob. 5CCCh. 3 - Prob. 6CCCh. 3 - Prob. 7CCCh. 3 - Prob. 8CCCh. 3 - Prob. 9CCCh. 3 - Prob. 10CC
Ch. 3 - Prob. 11CCCh. 3 - Prob. 12CCCh. 3 - Prob. 13CCCh. 3 - Prob. 14CCCh. 3 - Prob. 1CLCCh. 3 - Prob. 1QCh. 3 - Prob. 2QCh. 3 - Prob. 3QCh. 3 - Prob. 4QCh. 3 - Prob. 5QCh. 3 - Prob. 6QCh. 3 - Prob. 7QCh. 3 - Prob. 8QCh. 3 - Prob. 9QCh. 3 - Prob. 10QCh. 3 - Prob. 11QCh. 3 - Prob. 12QCh. 3 - Prob. 13QCh. 3 - Prob. 14QCh. 3 - Prob. 15QCh. 3 - Prob. 16QCh. 3 - Prob. 17QCh. 3 - Prob. 18QCh. 3 - Prob. 19QCh. 3 - Prob. 20QCh. 3 - Prob. 21QCh. 3 - Prob. 22QCh. 3 - Prob. 23QCh. 3 - Prob. 24QCh. 3 - Prob. 25QCh. 3 - Prob. 26QCh. 3 - Prob. 27QCh. 3 - Prob. 28QCh. 3 - Prob. 29QCh. 3 - Prob. 30QCh. 3 - Prob. 31QCh. 3 - Prob. 32QCh. 3 - Prob. 33QCh. 3 - Prob. 34QCh. 3 - Prob. 35QCh. 3 - Prob. 36QCh. 3 - Prob. 37QCh. 3 - Prob. 38QCh. 3 - Prob. 39QCh. 3 - Prob. 40QCh. 3 - Prob. 41QCh. 3 - Prob. 42QCh. 3 - Prob. 43QCh. 3 - Prob. 44QCh. 3 - Prob. 46QCh. 3 - Prob. 47QCh. 3 - Prob. 48QCh. 3 - Prob. 49QCh. 3 - Prob. 50QCh. 3 - Prob. 53Q
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- Only some of the people on the daytime side of Earth can witness a solar eclipse when it occurs, whereas all the people on the nighttime side of Earth can witness a lunar eclipse when it occurs. Why is this so?arrow_forwardConsider a calendar based entirely on the day and the month (the Moon’s period from full phase to full phase). How many days are there in a month? Can you figure out a scheme analogous to leap year to make this calendar work?arrow_forwardA total eclipse of the Sun was visible from Canada on July 10, 1972. When did an eclipse occur next with the same EarthMoonSun geometry? From what part of Earth was it total?arrow_forward
- What fraction of the Moon’s visible face is illuminated during first quarter phase? Why is this phase called first quarter?arrow_forwardWhat are three lines of evidence you could use to indicate that the phases of the Moon are not caused by the shadow of Earth falling on the Moon?arrow_forwardIf Earth had no atmosphere, what color would the eclipsed moon appear in the sky?arrow_forward
- What fraction of the Moons surface area is the far side? Of the near side of a third-quarter moon, what fraction is dark? What fraction of the far side is in the dark that cannot be seen by an observer from Earth viewing the Moon in its third-quarter phase?arrow_forwardWhy do lunar eclipses typically last much longer than solar eclipses?arrow_forwardWhich has the larger angular diameter in the skythe Sun or Moonduring an annular eclipse? If you wanted to be in the umbra, where would you have to physically be located to see this annular eclipse as a total solar eclipse?arrow_forward
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