Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 1, Problem 14Q
To determine
The meaning when it is said that the Moon subtends an angle of
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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?
Use the small-angle formula to calculate the angular diameter (in arc minutes) of Mars (d = 6.79 ✕ 103 km) as seen from Earth if Mars were at the location of the Sun (D = 1.5 ✕ 108 km).
d. Diameter of the Sun
I h
A
d.
Standing on the beach at sunset, you extend the tip of your finger at your full arm length from
your face, covering the Sun. Upon moving your finger around, you find that only about half of its
width is needed to completely cover the Sun's diameter. You measure your finger width to be 0.5
inches. You know your arm length to be 28.0 inches. You have be told that the Sun is
approximately 93 million miles away. Use this information to determine the approximate
diameter of the Sun, filling in the table below with the proper quantities measure in meters.
1 = ½ finger
g = eye level
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d = object
h = Diameter
f= object
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Chapter 1 Solutions
Universe
Ch. 1 - Prob. 1CCCh. 1 - Prob. 2CCCh. 1 - Prob. 3CCCh. 1 - Prob. 1QCh. 1 - Prob. 2QCh. 1 - Prob. 3QCh. 1 - Prob. 4QCh. 1 - Prob. 5QCh. 1 - Prob. 6QCh. 1 - Prob. 7Q
Ch. 1 - Prob. 8QCh. 1 - Prob. 9QCh. 1 - Prob. 10QCh. 1 - Prob. 11QCh. 1 - Prob. 12QCh. 1 - Prob. 13QCh. 1 - Prob. 14QCh. 1 - Prob. 15QCh. 1 - Prob. 16QCh. 1 - Prob. 17QCh. 1 - Prob. 18QCh. 1 - Prob. 19QCh. 1 - Prob. 20QCh. 1 - Prob. 21QCh. 1 - Prob. 22QCh. 1 - Prob. 23QCh. 1 - Prob. 24QCh. 1 - Prob. 25QCh. 1 - Prob. 26QCh. 1 - Prob. 27QCh. 1 - Prob. 28QCh. 1 - Prob. 29QCh. 1 - Prob. 30QCh. 1 - Prob. 31QCh. 1 - Prob. 32QCh. 1 - Prob. 33QCh. 1 - Prob. 34QCh. 1 - Prob. 35QCh. 1 - Prob. 36QCh. 1 - Prob. 37QCh. 1 - Prob. 38QCh. 1 - Prob. 39QCh. 1 - Prob. 40QCh. 1 - Prob. 41QCh. 1 - Prob. 42QCh. 1 - Prob. 43QCh. 1 - Prob. 44Q
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- What is the phase of the Moon during a total solar eclipse? During a total lunar eclipse?arrow_forwardWhich one of the following statements is true? (17.1) (a) The Moons surface gravity is 181 that of the Earth. (b) The Moon has an appreciable magnetic field. (c) The Moon is the second-brightest object in the sky. (d) The Moon revolves around the Earth in 31 days.arrow_forwardWhat fraction of the Moon’s visible face is illuminated during first quarter phase? Why is this phase called first quarter?arrow_forward
- During 1 month, the Moon passes through how many different phases? (17.2) (a) four (b) six (c) eight (d) none of the precedingarrow_forwardWhy is it difficult to construct a practical calendar based on the Moon’s cycle of phases?arrow_forwardAbout how many days must elapse between first-quarter moon and third-quarter moon in the same cycle?arrow_forward
- Make a list of each main phase of the Moon, describing roughly when the Moon rises and sets for each phase. During which phase can you see the Moon in the middle of the morning? In the middle of the afternoon?arrow_forwardWhat are the relative positions of the Earth, the Sun, and the Moon during a lunar eclipse? During a solar eclipse?arrow_forwardThe day on Mars is 1.026 Earth-days long. The martian year lasts 686.98 Earth-days. The two moons of Mars take 0.32 Earth-day (for Phobos) and 1.26 Earth-days (for Deimos) to circle the planet. You are given the task of coming up with a martian calendar for a new Mars colony. Would a solar or lunar calendar be better for tracking the seasons?arrow_forward
- Summarize the four main hypotheses for the origin of the Moon.arrow_forwardWhich is the phase of Venus when it is closest? Which when farthest? How do you know?arrow_forwardWhich of the following statements is false? (17.2) (a) The Moon rotates and revolves westward. (b) The orbital plane of the Moon is tilted about 5 to the Earths orbital plane. (c) The difference between the sidereal and synodic months is about 2 days. (d) The Moon revolves in an elliptical orbit.arrow_forward
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