Essential Cosmic Perspective
9th Edition
ISBN: 9780135795033
Author: Bennett
Publisher: PEARSON
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Chapter 2, Problem 11EAP
What is precession? How does it affect our view of the sky?
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Chapter 2 Solutions
Essential Cosmic Perspective
Ch. 2 - Prob. 1VSCCh. 2 - Which of the four labeled points represents the...Ch. 2 - Which of the four labeled points represents the...Ch. 2 - The diagram exaggerates the sizes of Earth and the...Ch. 2 - Given that Earths actual distance from the Sun...Ch. 2 - As viewed from Earth, in which zodiac...Ch. 2 - If the date is April 21, what zodiac constellation...Ch. 2 - If the date is April 21, what zodiac constellation...Ch. 2 - Prob. 1EAPCh. 2 - Suppose you were making a model of the celestial...
Ch. 2 - On a clear, dark night, the sky may appear to be...Ch. 2 - Why does the local sky look like a dome? Define...Ch. 2 - Prob. 5EAPCh. 2 - What are circumpolar stars? Are more stars...Ch. 2 - What are latitude and longitude? Does the local...Ch. 2 - What is the zodiac, and why do we see different...Ch. 2 - Suppose Earth’s axis had no tilt. Would we still...Ch. 2 - Briefly describe key facts about the solstices and...Ch. 2 - What is precession? How does it affect our view of...Ch. 2 - Briefly describe the Moons cycle of phases. Can...Ch. 2 - Why do we always see the same face of the Moon?Ch. 2 - Why don’t we see an eclipse at every new and full...Ch. 2 - What do we mean by the apparent retrograde motion...Ch. 2 - Prob. 16EAPCh. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Prob. 18EAPCh. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Prob. 20EAPCh. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Prob. 23EAPCh. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Decide whether the statement makes sense (or is...Ch. 2 - Two stars that are in the same constellation (a)...Ch. 2 - The north celestial pole is 35° above your...Ch. 2 - Beijing and Philadelphia have about the same...Ch. 2 - In winter, Earth’s axis points toward the star...Ch. 2 - When it is summer in Australia, the season in the...Ch. 2 - If the Sun rises precisely due east. (a) you must...Ch. 2 - A week after full moon, the Moon’s phase is (a)...Ch. 2 - The fact that we always see the same face of the...Ch. 2 - If there is going to be a total lunar eclipse...Ch. 2 - When we see Saturn going through a period of...Ch. 2 - Cultural Constellations. Many cultures have...Ch. 2 - Group Discussion: Sharing the Sky. Astronomers...Ch. 2 - Prob. 39EAPCh. 2 - These questions may be answered individually in...Ch. 2 - These questions may be answered individually in...Ch. 2 - These questions may be answered individually in...Ch. 2 - These questions may be answered individually in...Ch. 2 - New Planet. A planet in another solar system has a...Ch. 2 - Your View of the Sky. a. What are your latitude...Ch. 2 - View from the Moon. Suppose you lived on the Moon,...Ch. 2 - View from the Sun. Suppose you lived on the Sun...Ch. 2 - Farther Moon. Suppose the distance to the Moon...Ch. 2 - Smaller Earth. Suppose Earth were smaller. Would...Ch. 2 - Project: Eclipse Trip. Find details about a future...Ch. 2 - Be sure to show all calculations clearly and state...Ch. 2 - Find the Sun’s Diameter. The Sun has an angular...Ch. 2 - Prob. 54EAPCh. 2 - Prob. 55EAP
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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 are advantages and disadvantages of apparent solar time? How is the situation improved by introducing mean solar time and standard time?arrow_forwardMake 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_forward
- The Great Pyramid of Giza was constructed nearly 5000 years ago. Within the pyramid, archaeologists discovered a shaft leading from the central chamber out of the pyramid, oriented for favorable viewing of the bright star Thuban at that time. Thinking about Earth’s precession, explain why Thuban might have been an important star to the ancient Egyptians.arrow_forwardWhy is it difficult to construct a practical calendar based on the Moon’s cycle of phases?arrow_forwardIn a part of Earth’s orbit where Earth is moving faster than usual around the Sun, would the length of the sidereal day change? If so, how? Explain.arrow_forward
- When will the eclipse seasons occur during the current year? How many total of all types will occur? Which type of eclipse(s) will occur?arrow_forwardHow 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_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
- Look 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_forwardIn a part of Earth’s orbit where Earth is moving faster than usual around the Sun, would the length of the solar day change? If so, how? Explain.arrow_forwardPlease explain all answers! Thank you! The figure below shows the relative position of the Earth (the circle in the middle) and the Moon (the small circle on the orbital path around the Earth (the arrows on orbital path circle show the moving direction of the moon). On this figure, an unknown phase of the moon is currently at its highest position in the sky. Given that, this particular phase of the Moon rises from the horizon around 3am. Please answer the following questions related to this figure. C1. Please draw a small circle on the orbital path to indicate the position of the moon phase that may result in a lunar eclipse. Write down “lunar eclipse” next to this small circle. Please explain your draw. C2. When the Moon is at this position on the orbital path (shown in Question C1), will it always cause a lunar eclipse? Please explain your answer. C3. Please draw a small circle on the orbital path to show the approximate moon’s position when a sidereal month is completed (with…arrow_forward
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