Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 7, Problem 41Q
To determine
The diameter of Venus using small angle formula if on 16th March, 2007, Venus was
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A Sense of Proportion: Mercury averages only 0.39 AU from the Sun, Venus 0.72 AU and Mars 1.52 AU. If you built a model solar system and represent the average distance from the Sun to Earth as 10 inches, how far would you place Mercury, Venus and Mars from the Sun?
Use the small-angle formula to calculate the angular diameter (in arc minutes) of Mars (d = 6.79 ✕ 103 km) as seen from Earth if Mars were at the location of the Sun (D = 1.5 ✕ 108 km).
Which of the following is NOT best explained by Venus's extreme greenhouse effect?
a.
its extremely high surface temperature
b.
its extremely uniform surface temperature
c.
its extremely low surface wind speeds
d.
its lack of magnetism
Chapter 7 Solutions
Universe
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- Venus can be as bright as apparent magnitude 4.7 when at a distance of about 1 AU. How many times fainter would Venus look from a distance of 1 pc? What would its apparent magnitude be? Assume Venus has the same illumination phase from your new vantage point. (Hints: Recall the inverse square law, Section 9-2a; also, review the definition of apparent visual magnitudes, Chapter 2.) (Note: 1 pc = 2.1 105 AU.)arrow_forwardWhich is the phase of Venus when it is closest? Which when farthest? How do you know?arrow_forwardOn August 27, 2003, the planet Mars was at a distance of 0.373 AU from Earth. The diameter of Mars is 6788 km. Calculate the angular diameter of Mars, as seen from Earth on August 27, 2003. Give your answer in arcminutes.arrow_forward
- Earlier in this chapter, we modeled the solar system with Earth at a distance of about one city block from the Sun. If you were to make a model of the distances in the solar system to match your height, with the Sun at the top of your head and Pluto at your feet, which planet would be near your waist? How far down would the zone of the terrestrial planets reach?arrow_forwardWhat is the maximum angular diameter of the dwarf planet Ceres when it is closest to Earth? Could Earth-based telescopes detect surface features? Could the Hubble Space Telescope? (Hint: Use the small-angle formula, Eq. 3-1.) (Notes: Ceress average distance from the Sun is 2.8 AU and its diameter is 950 km. The best angular resolution of Earth-based telescopes at visual wavelengths is about 1 arc second and of Hubble about 0.1 arc second.)arrow_forwardIf you weigh 150 lbs. on the surface of Earth, how much would you weigh on Venus? On Mars?arrow_forward
- List several ways that Venus, Earth, and Mars are similar, and several ways they are different.arrow_forwardWhat evidence is there that Venus was volcanically active about 300600 million years ago?arrow_forwardLook at the map of the Hawaiian chain of islands on the right-hand page of the Concept Art: Volcanoes. Which island formed most recently? How do you know? Is the newly formed volcano of a type found on Venus, on Mars, on both planets, or on neither?arrow_forward
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