Essential Cosmic Perspective - Modified MasteringAstronomy
8th Edition
ISBN: 9780134602073
Author: Bennett
Publisher: PEARSON
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Chapter 3, Problem 3EAP
What is a lunar calendar? How can it be kept roughly synchronized with a solar calendar?
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Based on what you've learn on the impact of the Earth-Sun distance on the seasons, what can you say about the the cause of the seasons? (Give ALL correct answers, i.e., B, AC, BCD...)A) Earth's axis is tilted an an angle of 23.5 degrees compared to a line perpendicular (straight up and down) to its orbit, which is the main cause for the seasons.B) Earth's speed varies in its orbit around the Sun, giving us summer when Earth is moving fastest and winter when Earth is moving slowest.C) The Earth-Sun distance play a major role in creating seasons on Earth.D) The tilt of Earth's axis causes the Northern Hemisphere to be closer to the Sun than the southern hemisphere in summer, and vice versa in winter. E) The tilt of Earth's axis causes different portions of the Earth to receive more or less direct sunlight at different times of year.F) Earth's Northern Hemisphere is always tilted away from the Sun at an angle of 23.5 degrees.G) Earth's Northern Hemisphere is always tilted toward the Sun…
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The earth revolves around the sun in exactly 365 1/4 days which is equivalent to 1 year. To make up for the loss of 1/4 day, the calendar was adjusted so that we have a leap year for every 4 years. If the earth were to speed in its motion slightly so that a year would be completed in exactly 365 days and 6 hours, how often would we need to have a leap year?
Chapter 3 Solutions
Essential Cosmic Perspective - Modified MasteringAstronomy
Ch. 3 - Prob. 1VSCCh. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - In what way is scientific thinking natural to all...Ch. 3 - Prob. 2EAPCh. 3 - What is a lunar calendar? How can it be kept...
Ch. 3 - What do we mean by a model in science? Briefly...Ch. 3 - What do we mean by the Ptolemaic model? How did...Ch. 3 - What was the Copernican revolution, and how did it...Ch. 3 - What is an ellipse? Define its foci, semimajor...Ch. 3 - State and explain the meaning of each of Kepler’s...Ch. 3 - Describe the three hallmarks of science and...Ch. 3 - What is the difference between a hypothesis and a...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Prob. 20EAPCh. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Prob. 31EAPCh. 3 - Earth’s Shape. It took thousands of years for...Ch. 3 - Prob. 33EAPCh. 3 - Prob. 34EAPCh. 3 - Prob. 35EAPCh. 3 - Prob. 36EAPCh. 3 - Prob. 37EAPCh. 3 - Prob. 38EAPCh. 3 - Halley Orbit. Halley’s comet orbits the Sun every...Ch. 3 - Prob. 40EAPCh. 3 - 41. The Importance of Ancient Astronomy. Why was...Ch. 3 - Prob. 42EAPCh. 3 - Prob. 43EAPCh. 3 - The Galileo Affair. In recent years. the Roman...Ch. 3 - Prob. 45EAPCh. 3 - Prob. 46EAP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- What are advantages and disadvantages of apparent solar time? How is the situation improved by introducing mean solar time and standard time?arrow_forwardSuppose Earth took exactly 300.0 days to go around the Sun, and everything else (the day, the month) was the same. What kind of calendar would we have? How would this affect the seasons?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_forward
- Explain three lines of evidence that indicate that the seasons in North America are not caused by the changing Earth-Sun distance as a result of Earth’s elliptical orbit around the Sun.arrow_forwardExplain the origin of the leap year. Why is it necessary?arrow_forwardOn the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.arrow_forward
- In 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_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_forwardThe term equinox translates as “equal night.” Explain why this translation makes sense from an astronomical point of view.arrow_forward
- What would the seasons be like if Earth were tipped 350 instead of 23.4°? What would they be like if Earth’s axis were perpendicular to its orbit?arrow_forwardAgain using Appendix F, which planet(s) might you expect not to have significant seasonal activity? Why?arrow_forwardThe term solstice translates as “Sun stop.” Explain why this translation makes sense from an astronomical point of view.arrow_forward
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