The Essential Cosmic Perspective (7th Edition) - Standalone book
7th Edition
ISBN: 9780321928085
Author: Jeffrey O Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 19EAP
Decide whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). Explain clearly, not all of these have definitive answers, so your explanation is more important than your chosen answer.
20. The observable universe ¡s the same size today as it was a few billion years ago.
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Answer each of the following questions to the best of your ability in your own words. Be as specific and detailed as possible.
1. Describe each of the following terms:
galaxy
solar system
universe
Describe any relationships that may exist among any of these three things
2. Briefly explain the Big Bang theory
Question A7
State three pieces of evidence that support the idea that the Universe began in a hot Big Bang,
and explain how each piece of evidence supports the hot Big Bang model. Describe the ob-
servational evidence that supports the idea that the Universe is pervaded by Dark Energy, and
explain why each piece of evidence you cite supports the Dark Energy model.
Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2. In this case,
A.
Galaxy 1 must be twice as big as Galaxy 2.
B.
we are seeing Galaxy 1 as it looked at an earlier time in the history of the universe than Galaxy 2.
C.
we are seeing Galaxy 1 as it looked at a later time in the history of the universe than Galaxy 2.
D.
Galaxy 2 must be twice as old as Galaxy 1.
Chapter 1 Solutions
The Essential Cosmic Perspective (7th Edition) - Standalone book
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - About how far away from Earth would the Sun be...Ch. 1 - Prob. 4VSCCh. 1 - Prob. 1EAPCh. 1 - Define astronomical unit and light-year.Ch. 1 - Explain the statement The farther away we look in...Ch. 1 - Prob. 4EAPCh. 1 - Prob. 5EAPCh. 1 - What do we mean when we say that the universe is...
Ch. 1 - In what sense are we “star stuff”?Ch. 1 - Use the cosmic calendar to describe how the human...Ch. 1 - Briefly explain Earth’s daily rotation and annual...Ch. 1 - Prob. 10EAPCh. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Prob. 14EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 20EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 22EAPCh. 1 - Prob. 23EAPCh. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse s about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - Prob. 27EAPCh. 1 - Prob. 28EAPCh. 1 - Prob. 29EAPCh. 1 - Prob. 30EAPCh. 1 - Prob. 31EAPCh. 1 - Prob. 32EAPCh. 1 - Prob. 33EAPCh. 1 - Thinking About Scale. One key to success m science...Ch. 1 - Prob. 35EAPCh. 1 - Prob. 36EAPCh. 1 - Prob. 37EAPCh. 1 - Prob. 38EAPCh. 1 - Prob. 39EAPCh. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Moonlight and Sunlight. How long does it take...Ch. 1 - Prob. 43EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Prob. 45EAPCh. 1 - 48. Vast Orbs. Dutch astronomer Christiaan Huygens...Ch. 1 - Prob. 47EAPCh. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Prob. 50EAPCh. 1 - Prob. 51EAP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- State three pieces of evidence that support the idea that the Universe began in a hot Big Bang, and explain how each piece of evidence supports the hot Big Bang model. Describe the ob- servational evidence that supports the idea that the Universe is pervaded by Dark Energy, and explain why each piece of evidence you cite supports the Dark Energy model.arrow_forwardHubble's law. Hubble found that distant galaxies are receding with a velocity proportional to their distance from where we are on Earth. For the ith Galaxy, vi=H0ri With us at the origin. Show that this recession of the galaxies from us does not imply that we are at the center of the universe. Specifically, take the Galaxy at r1 as a New origin and show that Hubble's law is still obeyed.arrow_forwardlimits of what the universe can do. moves around within a system, whether an atom, a hurricane or a black hole. The first law describes Thermodynamics is the study of heat and energy. At its heart are laws that describe how energy atter reading. how energy cannot be created or destroyed, merely transformed from one kind to another. The second law, however, is probably better known and even more profound because it describes the The second law can be expressed in several ways, the simplest being that heat will naturally flow n a hotter to a colder body. At its heart is a property of thermodynamic systems called entropy "in the equations above it is represented by "S"- in loose terms, a measure of the amount of disorder within a system. This can be represented in many ways, for example in the arrangement of the molecules- water molecules in an ice cube are more ordered than the same molecules after they have been heated into a gas. Whereas the water molecules were in a well-defined…arrow_forward
- M6arrow_forward9. I found this meme online. Its goal is to undermine the picture of the Universe proposed by modern astronomy as it was discussed in class. How would you answer this question if you want to convince someone of the validity of the view proposed by modern astronomy? THE NORTH STAR POLARIS IS STATIONARY AND NEVER MOVES fb.com/fematters HOW IS THIS POSSIBLE ON A SPINNING BALL HURLING THROUGH SPACE?arrow_forwardWhich of the following can be concluded from the two premises below: 1. Whatever begins to exist has a cause 2. The universe began to exist some 14 billion years ago a. the universe must have a cause b. nothing c. the universe caused itself d. there must be a multiversearrow_forward
- I’ve gotten 3 different answers each time I’ve worked #4 out. I have no idea what to do.arrow_forwardThe mass density of our universe is measured to be about 10-29 kg/m3. If an arbitrary point is chosen as the center, how large is the radius of a spherical surface centered at the point so that the mass enclosed in the surface will become a blackhole observed by someone outside the surface? A. 4.2 trillion light years B. 420 billion light years C. 42 billion light years D. 4.2 billion light years Is the answer D? Thanks!arrow_forwardWhich statement below does not fit the model of the big bang and the subsequent changes in the universe? A) the universe was denser previously than it is now. B) the universe was hotter previously than it is now . C) the galaxies are moving closer together as time progresses. D) the universe is continuing to expand, even after the big bang.arrow_forward
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