Understanding Our Universe
Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 2, Problem 21QAP
To determine

The agreement or disagreement of the observer with one of the given hypotheses.

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When you step from the shade into the sunlight, the Sun’s heat is as evident as the heat from hot coals in a fireplace in an otherwise cold room. You feel the Sun’s heat not because of its high temperature (higher temperatures can be found in some welder’s torches), but because the Sun is big. Which do you estimate is larger, the Sun’s radius or the distance between the Moon and Earth? Check your answer in the list of physical data on the inside back cover. Do you find your answer surprising?
Use the table to answer questions 13 through 15. A student collects the following data about the Sun, stars, moon, and Earth. Time of Day Sun Visible Moon Visible Stars Visible 5 am Sun Location Near horizon Above horizon Overhead Yes No Yes 10 am No Yes No No 1 pm 5 pm 9 pm Yes No Near horizon No Yes No Not visible No Yes Yes O What research question is the student investigating? A. How long does it take Earth to rotate on its axis? B. Does the moon rotate at a faster rate than Earth does? C. How do the locations of the stars relate to the moon? D. What is the relationship between time of day and seeing objects in the sky?
The timing of Moonrise is later every day. Let’s understand why: a) Moonrise occurs when you, as you sit on the rotating Earth, turn to the point where you can just see the Moon appear over the horizon. Draw a picture to illustrate what this would look like. Draw the Earth, Moon, and you standing on the Earth to indicate this scenario. (You’ve seen my artistic skills in class, I’m not asking you to do anything better than that. Just label/make clear what is shown). Take this as Day 1.In 24 hours, you would return back to that exact point on the Earth. However, the Moon will also have moved forward in its orbit (it orbits the Earth in the same direction that the Earth is spinning). How far along in its orbit does the Moon move? That is, assume the Moon is orbiting in a circular orbit; in going from Day 1 to Day 2,               how many degrees does thee Moon move forward? Indicate (very roughly) via a drawing.b) Because the Moon advanced in its orbit, you now must wait…
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