21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 2, Problem 6QP
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Which is correct answer.
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2. Give two reasons why it is warmer in summer than in winter. Explain how these two
effects cause earth’s seasons.
That the moon has no magnetic field implies that
a.
the moon is spinning too slowly to produce a magnetic field.
b.
the interior of the moon is too hot to produce a magnetic field.
c.
the crust of the moon is so thick that the magnetic field can not get out of the interior.
d.
the moon’s core contains little if any molten iron.
e.
the moon is moving further from Earth.
8. Describe how the seasons would be different if the Earth's axis of rotation, rather than
having its present 23.5° tilt, were tilted by: a) 0° b) 90°.
Chapter 2 Solutions
21st Century Astronomy
Ch. 2.1 - Prob. 2.1ACYUCh. 2.1 - Prob. 2.1BCYUCh. 2.2 - Prob. 2.2CYUCh. 2.3 - Prob. 2.3CYUCh. 2.4 - Prob. 2.4CYUCh. 2.5 - Prob. 2.5CYUCh. 2 - Prob. 1QPCh. 2 - Prob. 2QPCh. 2 - Prob. 3QPCh. 2 - Prob. 4QP
Ch. 2 - Prob. 5QPCh. 2 - Prob. 6QPCh. 2 - Prob. 7QPCh. 2 - Prob. 8QPCh. 2 - Prob. 9QPCh. 2 - Prob. 10QPCh. 2 - Prob. 11QPCh. 2 - Prob. 12QPCh. 2 - Prob. 13QPCh. 2 - Prob. 14QPCh. 2 - Prob. 15QPCh. 2 - Prob. 16QPCh. 2 - Prob. 17QPCh. 2 - Prob. 18QPCh. 2 - Prob. 19QPCh. 2 - Prob. 20QPCh. 2 - Prob. 21QPCh. 2 - Prob. 22QPCh. 2 - Prob. 23QPCh. 2 - Prob. 24QPCh. 2 - Prob. 25QPCh. 2 - Prob. 26QPCh. 2 - Prob. 27QPCh. 2 - Prob. 28QPCh. 2 - Prob. 29QPCh. 2 - Prob. 30QPCh. 2 - Prob. 31QPCh. 2 - Prob. 33QPCh. 2 - Prob. 34QPCh. 2 - Prob. 35QPCh. 2 - Prob. 36QPCh. 2 - Prob. 37QPCh. 2 - Prob. 38QPCh. 2 - Prob. 39QPCh. 2 - Prob. 40QPCh. 2 - Prob. 41QPCh. 2 - Prob. 42QPCh. 2 - Prob. 43QPCh. 2 - Prob. 44QPCh. 2 - Prob. 45QP
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- Relative to the stars, the moon moves about ___________ eastward in the sky each night. a. 1° b. 5° c. 13° d. 27.3° e. 29.5°arrow_forward1. Give three applications of light year. 2. State four effects of volcanoes.arrow_forwardBecause of the precession of the Earth’s axis, a. there are four seasons, spring, summer, fall, and winter. b. the Earth receives more solar radiation in the summer than in the winter. c. Polaris will not be the North Star in about 12,000 years. d. the lengths of the Earth’s days and nights vary throughout the year.arrow_forward
- QUESTION 3 The surface of Venus receives a. a lot more sunlight than the surface of the Earth b. much less sunlight than the surface of the Earth c. about as much sunlight as the surface of the Earth QUESTION 4 Venus has very low surface wind speed because a. the greenhouse effect makes the surface temperature nearly uniform b. it has a very thin atmosphere c. the thick clouds don't allow for much convection in the atmosphere d. it doesn't have a large moonarrow_forward2. During a sunrise, the Sun appears to "rise up" from the horizon. Why does this happen? A. Earth is spinning on its axis. B. The Sun is circling around Earth C. The Sun is moving closer to Earth. D. Earth is revolving around the Sun. Explanation:arrow_forwardThe friction created when tidal forces move ocean waters over the seabeds a. causes the lunar phases. b. slows the rotation of Earth, gradually making the days longer c. forces the moon to approach Earth. d. has no effect on Earth. e. has no effect on the moon.arrow_forward
- 12 Which of these statements is false? A Seasons are caused by variations in Earth's distance from the sun Seasons are opposite in the Northern and Southern Hemispheres The earth's slightly varying orbital distance has virtually no effect on the weather B C D E The real cause of the seasons is the earth's axis tilt The two hemispheres of the earth take turns being tipped towards the sun over the course of each yeararrow_forwardThe colorful display of lights in the upper atmosphere seen in higher and lower latitudes are called auroras. What causes them? a. the response of the earth’s magnetic field to solar flares b. solar radiation and particles ionize the gas molecules in that portion of the atmosphere c. the circulation of the earth’s outer core d. highly energetic particles coming from outer space glow as they enter our atmospherearrow_forward4 Determine the albedo flux for an orbit around Earth in Watts/m2, given an altitude of 1,186 kmarrow_forward
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