Astronomy Today (9th Edition)
9th Edition
ISBN: 9780134450278
Author: Eric Chaisson, Steve McMillan
Publisher: PEARSON
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Chapter 2, Problem 2D
To determine
To explain: The geocentric model of the universe, and to determine the reason that it was accepted for so long.
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Answer it correctly please. Explain your answer. I will rate accordingly with multiple votes.
Match each discovery, model, or Law with the person we credit with discovering them
(Select T-Tycho Brahe, K-Kepler, G-Galileo, A-Aristotle, P-Ptolemy, N-Newton If the first is T and the rest K, enter
TKKKKK)
A) Devised the earliest geocentric solar system models
B) The orbits of planets are
C) Made careful measurements of the location of the planets good to 1 arcmin.
D) Described the meaning of force by three laws.
E) Devised the best Earth-centered (geocentric) model of the solar system using epicycles
F) Found the Sun had flaws (sun spots) and that the Sun rotates.
elipses
PLEASE MAKE SURE THAT YOU ARE ANSWERING THE QUESTIONS USING YOUR OWN THOUGHTS. STRICTLY NO COPY PASTE PLEASE!
Answer each questions in not less than 2 paragraphs:
3. What is astronomy?
4. What is Geocentric Model?
Chapter 2 Solutions
Astronomy Today (9th Edition)
Ch. 2 - Prob. 1DCh. 2 - Prob. 2DCh. 2 - Prob. 3DCh. 2 - Prob. 4DCh. 2 - Prob. 5DCh. 2 - Prob. 6DCh. 2 - Prob. 7DCh. 2 - Prob. 8DCh. 2 - Prob. 9DCh. 2 - Prob. 10D
Ch. 2 - Prob. 11DCh. 2 - Prob. 12DCh. 2 - Prob. 13DCh. 2 - Prob. 14DCh. 2 - Prob. 15DCh. 2 - Prob. 1MCCh. 2 - Prob. 2MCCh. 2 - Prob. 3MCCh. 2 - Prob. 4MCCh. 2 - Prob. 5MCCh. 2 - Prob. 6MCCh. 2 - Prob. 7MCCh. 2 - Prob. 8MCCh. 2 - Prob. 9MCCh. 2 - Prob. 10MCCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8P
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- How Do We Know? Why is it important that a theory make testable predictions?arrow_forwardMilestone A: Walk 3.2 km (~2 miles) towards northeast. Milestone B: Walk 1.3 km towards southeast. Milestone C: Walk 2.4 km directly south. Surprise at the end! You have arrived at the treasure! Distance: What is the total distance traveled if you walk the distance A, B, C? Give your answer in km and miles. 2. Direction: a. what is meant by “north east?” b. what direction would this be on a cartesian coordinate system? c. What is meant by “south east?” d. What direction would this be on a cartesian coordinate system? e. What about “south”? f. What direction on cartesian coordinate system? 3. Draw the diagram: include drawing the resultant a. What does the resultant vector represent? 4. Calculate: use trigonometry to find the displacement.arrow_forwardExplain what is meant by the distance ladder in astronomy. Describe briefly how each “rung” of the distance ladder is calibrated so that a reliable measure of distance can be obtained using each of the methods. State clearly the range of distances that can be measured by each method that makes up the distance ladder.arrow_forward
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- Try Now ... .... Listed below are some distances from Earth to other objects in the Milky Way galaxy. Convert each distance to light-years. (Each of these distances is less than one light-year. For an added challenge, convert each distance to light minutes or light seconds.) 1. The distance from Earth to the Moon is about 384,400 km. How many light-years is this? 2. The distance from Earth to Mars is about 784,000,000 km. How many light-years is this? 3. The distance from Earth to Pluto is about 5,750,000,000 km. How many light-years is this?arrow_forwardName Date What causes one solar system object to move around another one? Part A: Why do the planets in our solar system stay in a predictable pattern and not fly off into space chaotically? Part B: Explain how mass and distance affect gravity. 1. How would increasing the mass of the Moon affect the force of gravity? 2. How would decreasing the mass of the Moon affect the force of gravity? 3. How would increasing the distance between Earth and the Moon affect the force of gravity? 4. How would decreasing the distance between Earth to the Moon affect the force of gravity? Part C: Based on this idea, why do you think the solar system is set up the way it is?arrow_forwardasap 1. Imagine that an object is moving around the Sun. What will be the orbital period of the object in Earth years if its orbit has a semi-major axis 1.587 AU?arrow_forward
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