Astronomy Today--9th Edition
9th Edition
ISBN: 9780134580555
Author: Chaisson And Mcmillan
Publisher: PEARSON
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Chapter 1, Problem 4MC
To determine
The correct option, from the following options, for the effecton the solar dayas compared with a sidereal day, of the situation when Earth orbited the Sun in 9 months instead of 12.
(a) longer.
(b) shorter.
(c) unchanged.
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Chapter 1 Solutions
Astronomy Today--9th Edition
Ch. 1 - Prob. 1DCh. 1 - Prob. 2DCh. 1 - Prob. 3DCh. 1 - Prob. 4DCh. 1 - Prob. 5DCh. 1 - Prob. 6DCh. 1 - Prob. 7DCh. 1 - Prob. 8DCh. 1 - Prob. 9DCh. 1 - Prob. 10D
Ch. 1 - Prob. 11DCh. 1 - Prob. 12DCh. 1 - Prob. 13DCh. 1 - Prob. 14DCh. 1 - Prob. 15DCh. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Prob. 8MCCh. 1 - Prob. 9MCCh. 1 - Prob. 10MCCh. 1 - Prob. 1PCh. 1 - Prob. 2PCh. 1 - Prob. 3PCh. 1 - Prob. 4PCh. 1 - Prob. 5PCh. 1 - Prob. 6PCh. 1 - Prob. 7PCh. 1 - Prob. 9P
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- On the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.arrow_forwardWhat is the angular distance from the north celestial pole to the point on the sky called the vernal equinox? To the summer solstice?arrow_forwardPretend the Moons orbit around Earth is a perfect circle. How long does it take in units of days for the Moon to move 90 degrees relative to the stars? Is this number dependent on the synodic period or the sidereal period?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_forwardIdentify the phases of the Moon if on March 20 the Moon is located at the point on the ecliptic called: (a) the vernal equinox, (b) the autumnal equinox, (c) the summer solstice, (d) the winter solstice.arrow_forwardWhat phases would Venus show if the geocentric model were correct?arrow_forward
- How many degrees does the Moon move per day relative to the fixed stars? How many days does it take for the Moon to return to its original location relative to the fixed stars?arrow_forwardLook at the view from Earth on March 1 in Figure 2-9, shown here. Is the view from Earths nighttime side or daytime side? How do you know? Which asterism or constellation is shown in this image?arrow_forward
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