Foundations of Astronomy (MindTap Course List)
14th Edition
ISBN: 9781337399920
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 3SOP
The Sun is roughly 100 times the diameter of Earth. Which of the following distances is roughly 100 times the diameter of the Sun? radius of the Milky Way Galaxy; radius of the Moon; radius of Earth’s orbit around the Sun; radius of the Moon’s orbit around Earth
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The radius of the Earth's orbit is 1.50 1011 m and that of Mars is 2.28 1011 m. The star that this planet orbits is identical to our Sun. What is the orbital period of this planet?In years?
An astronomical unit (AU) is defined as the average distance between
the solar system and Alpha Centauri
the Earth and the Moon
the Milky Way Galaxy and the Andromeda Galaxy
the Earth and the Sun
It is important to have an idea about the distances between and relative sizes of celestial objects in the
solar system. In Part 1 we will pretend to shrink the solar system until its center piece, the Sun, is 67.3 cm
in diameter. This will represent the Sun which is 1,390,000 km in diameter. The scale of our model is thus:
67.3 cm
= 4.84 x 10-5 cm
km
Scale
1, 390, 000 km
To find the size or distance between objects in centimeters for the model, simply multiply the actual size
or distance in kilometers by the scale factor above.
1. Fill in following table:
Quantity
Actual Distance (km) Model Distance (cm)
Diameter of Sun
1,390,000
Diameter of Earth
12,760
Diameter of Moon
3,480
Distance Between Earth and Sun
1.5 x 108
Distance Between Earth and Moon
384,000
Distance to Proxima Centauri
3.97 x 1013
Chapter 1 Solutions
Foundations of Astronomy (MindTap Course List)
Ch. 1 - Prob. 1RQCh. 1 - What is the largest dimension of which you have...Ch. 1 - What is the difference between the Solar System,...Ch. 1 - What is the difference between the Moon and a...Ch. 1 - Why do astronomers now label Pluto a dwarf planet?Ch. 1 - Why are light-years more convenient than miles,...Ch. 1 - Why is it difficult to detect planets orbiting...Ch. 1 - Prob. 8RQCh. 1 - What is the difference between the Milky Way and...Ch. 1 - What are the Milky Way Galaxys spiral arms?
Ch. 1 - Prob. 11RQCh. 1 - Where are you in the Universe? If you had to give...Ch. 1 - Prob. 13RQCh. 1 - Prob. 14RQCh. 1 - Prob. 15RQCh. 1 - How do we know? How does the scientific method...Ch. 1 - The equatorial diameter of Earth is 7928 miles. If...Ch. 1 - The equatorial diameter of the Moon is 3476...Ch. 1 - One astronomical unit (AU) is about 1.5 108 km....Ch. 1 - A typical galaxy is shown on the first page of the...Ch. 1 - The time of the Cambrian explosion is listed on...Ch. 1 - Venus orbits 0.72 AU from the Sun. What is that...Ch. 1 - Light from the Sun takes 8 minutes to reach Earth....Ch. 1 - The Sun is almost 400 times farther from Earth...Ch. 1 - If the speed of light is 3.0 105 km/s, how many...Ch. 1 - Prob. 10PCh. 1 - How long does it take light to cross the diameter...Ch. 1 - The nearest galaxy to our home galaxy is about 2.5...Ch. 1 - How many galaxies like our own would it take if...Ch. 1 - Arrange the following in order of increasing size:...Ch. 1 - Prob. 2SOPCh. 1 - The Sun is roughly 100 times the diameter of...Ch. 1 - Prob. 4SOPCh. 1 - Look at the center of Figure 14. Approximately...Ch. 1 - Look at Figure 1-6. How can you tell that Mercury...Ch. 1 - Prob. 3LTLCh. 1 - Look at Figure 1-9. Would you say that the...Ch. 1 - Of the objects listed here, which would be...Ch. 1 - Prob. 6LTL
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