Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 3, Problem 14CC
To determine
Whether the Earth was assumed to be larger, smaller, or approximately the same size, if Eratosthenes had found that the sun’s noontime summer solstice altitude at Alexandria had great proximity to directly overhead.
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How would Eratosthenes’s estimate have been different if the sun were actually closer to Earth?
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If Earth were smaller than it is, but the Alexandria-to-Syene distance were the same, would the shadow of the vertical pillar in Alexandria be longer or shorter at noon during the summer solstice?
Chapter 3 Solutions
Universe
Ch. 3 - Prob. 1CCCh. 3 - Prob. 2CCCh. 3 - Prob. 3CCCh. 3 - Prob. 4CCCh. 3 - Prob. 5CCCh. 3 - Prob. 6CCCh. 3 - Prob. 7CCCh. 3 - Prob. 8CCCh. 3 - Prob. 9CCCh. 3 - Prob. 10CC
Ch. 3 - Prob. 11CCCh. 3 - Prob. 12CCCh. 3 - Prob. 13CCCh. 3 - Prob. 14CCCh. 3 - Prob. 1CLCCh. 3 - Prob. 1QCh. 3 - Prob. 2QCh. 3 - Prob. 3QCh. 3 - Prob. 4QCh. 3 - Prob. 5QCh. 3 - Prob. 6QCh. 3 - Prob. 7QCh. 3 - Prob. 8QCh. 3 - Prob. 9QCh. 3 - Prob. 10QCh. 3 - Prob. 11QCh. 3 - Prob. 12QCh. 3 - Prob. 13QCh. 3 - Prob. 14QCh. 3 - Prob. 15QCh. 3 - Prob. 16QCh. 3 - Prob. 17QCh. 3 - Prob. 18QCh. 3 - Prob. 19QCh. 3 - Prob. 20QCh. 3 - Prob. 21QCh. 3 - Prob. 22QCh. 3 - Prob. 23QCh. 3 - Prob. 24QCh. 3 - Prob. 25QCh. 3 - Prob. 26QCh. 3 - Prob. 27QCh. 3 - Prob. 28QCh. 3 - Prob. 29QCh. 3 - Prob. 30QCh. 3 - Prob. 31QCh. 3 - Prob. 32QCh. 3 - Prob. 33QCh. 3 - Prob. 34QCh. 3 - Prob. 35QCh. 3 - Prob. 36QCh. 3 - Prob. 37QCh. 3 - Prob. 38QCh. 3 - Prob. 39QCh. 3 - Prob. 40QCh. 3 - Prob. 41QCh. 3 - Prob. 42QCh. 3 - Prob. 43QCh. 3 - Prob. 44QCh. 3 - Prob. 46QCh. 3 - Prob. 47QCh. 3 - Prob. 48QCh. 3 - Prob. 49QCh. 3 - Prob. 50QCh. 3 - Prob. 53Q
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- What ancient evidence was found for a spherical Earth? (This question will show a checkbox next to each answer, and you must select ALL the correct answers and none of the wrong ones) the different angles of equinox shadows measured at cities in Egypt by Eratosthenes the curved shape of Earth's lunar eclipse shadow Circumnavigation of the earth the subtle curvature of the horizon sighted by the Greek astronomer, Metaxa The Pythagorean Theoremarrow_forwardWhy did Pythagoras believe that Earth should be spherical?arrow_forwardIn Ptolemys model, how do the epicycles of Mercury and Venus differ from those of Mars, Jupiter, and Saturn?arrow_forward
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- "Aristarchus' Method of Determining the Distance to the Sun" At the first quarter of the Moon (at position Q), the angle (EQS) equals 90° (see the sketch below). Modern observations show that the interval from new Moon (near position N) to first quarter (at Q) is 35 minutes shorter than that from first quarter to full Moon (near position F). Given that the lunar synodic period (the interval between two identical lunar phases) is 29 days and 12.73 hours, estimate the Earth-Sun distance (ES) in terms of the Earth-Moon distance.arrow_forwardThe sidereal day is one rotation of the Earth relative to the The day is longer by 4 minutes. O Sun; stars; solar O Stars; sun; solar O Sun; stars; sidereal O Stars; sun; sidereal while the solar day is one rotation of the Earth relative to thearrow_forwardWhich of the following was used by Aristotle to prove the shape of the Earth?Which of the following refers to the science of studying the outer space and other celestial objects?Which of the following refers to the sun-centered model of the universe?Which of the following refers to the earth-centered model of the universe?Which of the following Astronomer was sentenced to death by church because of his opposing views and theories about the center of the universe?Which of the following was proposed by Ptolemy to fix the anomalies inAristotelian model of the universe?Which of the following models of the universe where the celestial planets revolve around the sun while the sun revolves around the earth?Which of the following Astronomers observed that Mars does not move incircles?Which of the following refers to the term where other celestial bodies/objects moves around the earth in a spherical manner?Which of the following terms refer to the part Pythagorean universe where the Greek Gods…arrow_forward
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