Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
16th Edition
ISBN: 9781259663895
Author: KRAUSKOPF, Konrad B.
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 1, Problem 13E
What is the basic difference between the ptolemaic and copernican models? Why is the ptolemaic model considered incorrect?
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Proof of why the Copernican model is more compatible with explaining the solar system than the Ptolemaic model (Think of specific Galilean observations & retrograde motion)
The geocentric model, in all of its complexity, survived scientific scrutiny for almost 1,400 years. However, in modern
astronomy, scientists seek to explain the natural and physical world we live in as simply as possible. The complexity of
Ptolemy's model was an indicator that his theory was inherently flawed. Why, then, was the geocentric model the leading
theory for such a long time, even though the heliocentric model more simply explained the observed motions and
brightness of the planets?
Check all that apply.
☐ The geocentric model conformed to both the philosophical and religious doctrines of the time.
☐ The heliocentric model did not make noticeably better predictions than the geocentric model.
From Earth, all heavenly bodies appeared to circle around a stationary Earth.
The complexity of the geocentric model was appealing to most ancient astronomers.
Ancient astronomers did not observe stellar parallax, which would have provided evidence in favor of the heliocentric model.
Chapter 1 Solutions
Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
Ch. 1 - The scientific method is a. continuing process b....Ch. 1 - A scientific law or theory is valid a. forever b....Ch. 1 - A hypothesis is a. a new scientific idea b. a...Ch. 1 - The ongoing evolution of living things a. is one...Ch. 1 - The object in the sky that apparently moves least...Ch. 1 - A constellation is a. an especially bright star b....Ch. 1 - Which of the following is no longer considered...Ch. 1 - A planet not visible to the naked eye is a. Mars...Ch. 1 - The planet closest to the sun is a. earth b. Venus...Ch. 1 - Prob. 10MC
Ch. 1 - Kepler modified the copernican system by showing...Ch. 1 - The speed of a planet in its orbit around the sun...Ch. 1 - According to Keplers third law, the time needed...Ch. 1 - The law of gravity a. applies only to large bodies...Ch. 1 - The earth bulges slightly at the equator and is...Ch. 1 - The usual tidal pattern in most parts of the world...Ch. 1 - Tides are caused a. only by the sun b. only by the...Ch. 1 - High tide occurs at a given place a. only when the...Ch. 1 - The prefix micro stands for a. 1/10 b. 1/100 c....Ch. 1 - A centimeter is a. 0.001 m b. 0.01 m c. 0.1 m d....Ch. 1 - Of the following, the shortest is a. 1 mm b. 0.01...Ch. 1 - Of the following, the longest is a. 1000 ft b. 500...Ch. 1 - A person is 180 cm tall. This is equivalent to a....Ch. 1 - The measurements of a room are given as length =...Ch. 1 - Prob. 1ECh. 1 - Prob. 2ECh. 1 - What is the difference between a hypothesis and a...Ch. 1 - Prob. 4ECh. 1 - According to the physicist Richard Feynman,...Ch. 1 - What does a year correspond to in terms of...Ch. 1 - You are lost in the northern hemisphere in the...Ch. 1 - In terms of what you would actually observe, what...Ch. 1 - What must be your location if the stars move...Ch. 1 - How do leap years fit into the ptolemaic system?...Ch. 1 - From observations of the moon, why would you...Ch. 1 - The sun, moon, and planets all follow...Ch. 1 - What is the basic difference between the ptolemaic...Ch. 1 - Ancient astronomers were troubled by variations in...Ch. 1 - Compare the ptolemaic and copernican explanations...Ch. 1 - What do you think is the reason scientists use an...Ch. 1 - The average distance from the earth to the sun is...Ch. 1 - As the earth revolves around the sun, some stars...Ch. 1 - Why is gravity considered a fundamental force...Ch. 1 - What, if anything, would happen to the shape of...Ch. 1 - What is the difference between spring and neap...Ch. 1 - The length of the day has varied. When did the...Ch. 1 - The earth takes almost exactly 24 h to make a...Ch. 1 - Does the sun or the moon have the greater...Ch. 1 - In the following pairs of length units, which is...Ch. 1 - A European driving from Paris to Brussels finds...Ch. 1 - The worlds tallest tree is a sequoia in California...Ch. 1 - The diameter of an atom is roughly 104 times the...Ch. 1 - How many square feet are there in an area of 1.00...Ch. 1 - A swimming pool is 20.00 m long, 7.00 m wide, and...Ch. 1 - The speedometer of a European car gives its speed...Ch. 1 - A horse galloped a mile in 2 min 35 s. What was...Ch. 1 - How many microphones are there in a megaphone?Ch. 1 - Use the proper number of significant figures to...Ch. 1 - Prob. 35E
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- What two factors made it difficult, at first, for astronomers to choose between the Copernican heliocentric model and the Ptolemaic geocentric model?arrow_forwardWhy did Copernicus want to develop a completely new system for predicting planetary positions? Provide two reasons.arrow_forwardWhat is the Copernican principle? Make a list of scientific discoveries that confirm it.arrow_forward
- Why did Copernicus have to keep small epicycles in his model? Which planet has the longest duration of retrograde motion as viewed from Earth? The shortest?arrow_forwardWhat was so significant about Tycho Brahe's observations of the position of the planets that enabled Kepler to eventually come up with his theory that planets orbit the Sun in ellipses rather than circles? If Kepler did not have access to Tycho's data, do you think he would have came up with the same theory, or do you think he would have preferred either the Copernican or Ptolemaic theory?arrow_forwardWhat are the 5 scientific objections to the Copernican heliocentric model?arrow_forward
- Why did Kepler need Tycho Brahe’s data to formulate his laws?arrow_forwardIn Ptolemys model, which of the followingepicycle, equant, or deferenttravels in uniform circular motion as viewed from a particular point? Name and describe that point. Are these uniform circular motions at the same speeds and in the same directions?arrow_forwardWhy did Ptolemy have to introduce multiple circles of motion for the planets instead of a single, simple circle to represent the planet’s motion around the Sun?arrow_forward
- Although the Copernican system was largely correct to place the Sun at the center of all planetary motion, the model still gave inaccurate predictions for planetary positions. Explain the flaw in the Copernican model that hindered its accuracy.arrow_forwardHow did Hipparchus discover the wobble of Earth’s axis, known as precession?arrow_forwardDescribe in detail the motions of the planets according to Ptolemy.arrow_forward
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Kepler's Three Laws Explained; Author: PhysicsHigh;https://www.youtube.com/watch?v=kyR6EO_RMKE;License: Standard YouTube License, CC-BY