Explorations: Introduction to Astronomy
9th Edition
ISBN: 9781260432183
Author: ARNY, Thomas
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 1, Problem 5P
To determine
To be shown that 242 draconic periods very nearly equals 223 synodic periods and how long this is in years. What and why this suggest about the eclipse.
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Chapter 1 Solutions
Explorations: Introduction to Astronomy
Ch. 1 - (1.1) What is the celestial sphere? What are the...Ch. 1 - (1.1) What is the difference between rotation and...Ch. 1 - (1.1/1.2) What is a constellation, and what is...Ch. 1 - (1.2) What causes the seasons?Ch. 1 - What causes the Moons phases?Ch. 1 - (1.3) How long does it take the Moon to go through...Ch. 1 - (1.2) Why does the position of sunrise along the...Ch. 1 - Why arent there eclipses each month?Ch. 1 - (1.1) If you were standing on Earths equator,...Ch. 1 - Prob. 2TQ
Ch. 1 - (1.1) Can you think of an astronomical reason why...Ch. 1 - Draw sketches to show the angles setting stars...Ch. 1 - Prob. 5TQCh. 1 - Prob. 6TQCh. 1 - (1.2) Why does the position of sunrise along the...Ch. 1 - (1.2) Why do we have time zones? Sketch and label...Ch. 1 - (1.3) Provide two or three pieces of evidence you...Ch. 1 - (1.3) If the Moon orbited Earth in the opposite...Ch. 1 - (1.1) If Earth turns one full rotation in...Ch. 1 - (1.2) From a latitude of 55, what is the highest...Ch. 1 - Prob. 3PCh. 1 - Prob. 4PCh. 1 - Prob. 5PCh. 1 - Prob. 6PCh. 1 - Prob. 7PCh. 1 - Prob. 8PCh. 1 - (1.1) If you are standing at Earths North Pole,...Ch. 1 - Prob. 2TYCh. 1 - Prob. 3TYCh. 1 - Prob. 4TYCh. 1 - (1.2) In which of the following locations can the...Ch. 1 - Prob. 6TYCh. 1 - (1.3) You observe the Moon rising at 6 p.m.,...Ch. 1 - (1.3) You observe the Moon rising at 3 p.m., a few...Ch. 1 - Prob. 9TYCh. 1 - (1.4) Figure 1.22 (right) shows an eclipse of the...Ch. 1 - (1.4) If the Moon were to expand to twice its...
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- Why are solar eclipses separated by one Saros cycle not visible from the same location on Earth?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_forwardWhich of the following is not a contributing factor in causing eclipses? (17.2) (a) the rotation of the Earth about its axis (b) the inclination of the Moons orbit (c) the varying distance between the Earth and the Moon (d) the varying distance between the Earth and the Sunarrow_forward
- Pretend 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_forwardAn arcminute is what fraction of a degree?arrow_forwardWhat is the difference between a hypothesis and a question?arrow_forward
- Consider 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_forwardSuppose, hypothetically, that the Earth orbited the Sun at half its current distance. (That is, at 1/2 AU instead of 1 AU). What would be the length of the year? What else would be different?arrow_forwardKindly provide a more credible answer since the ones available online are not accurate. Thank you and pls skip if unsure.arrow_forward
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