Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 2, Problem 50Q
To determine

The reason for the proposal that the statue of the Greek god atlas, which holds a globe representing the celestial sphere, is the depictions of several important constellations and the celestial equator. It has been proposed that the arrangements of constellations depicts the sky as it was mapped in an early star atlas that dates from 129 B.C.E.

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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…
Description: If you could see both the Sun and the other stars during the day, this is what the sky would look like looking south at noon on January 1 for an observer in the northern hemisphere. The Sun would appear in the sky next to the more distant stars in the constellation Sagittarius, (labeled constellation C). Also shown are other constellations (named and labeled A, B, D, and E) that will be visible above the horizon at this time when facing south. Aquarius -EAST B Capricornus Horizon Sagittarius SOUTH SUN D Scorpius Libra E WEST->>
If the sun suddenly ceased to shine, how long would it take earth to become dark? a) Using the formula d = s x t , where d=distance , s= speed, and t = time, rearrange the terms to solve for time. b) Given the distance to the Sun is 93 million miles ( 1.5 x 10^11 m) and the speed of light is c= 3 x 10^8 m/s) use this information to find out how many SECONDS it takes light to reach earth. c) Convert your answer for b) to Minutes and remaining seconds.
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