21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 22, Problem 5QP
To determine
Place in order of events in the history of the universe.
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5. Cesar reads about the big bang theory, which explains that the universe expanded as theresult of an explosion. He wants to evaluate whether this theory is a good one. Whichstatement is a characteristic of a good theory?
A. It is the idea of only one scientist.B. It does not change as time passes.C. It is not supported by scientific evidence.D. It changes with new observations made by astronomers.
10. According to the Big Bang Theory, how old is the universe?
1) We believe that the big bang occurred 13.8 billion years ago. Give 3 reasons why scientists believe the universe is this old.
Chapter 22 Solutions
21st Century Astronomy
Ch. 22.1 - Prob. 22.1CYUCh. 22.2 - Prob. 22.2CYUCh. 22.3 - Prob. 22.3CYUCh. 22.4 - Prob. 22.4CYUCh. 22.5 - Prob. 22.5CYUCh. 22 - Prob. 1QPCh. 22 - Prob. 2QPCh. 22 - Prob. 3QPCh. 22 - Prob. 4QPCh. 22 - Prob. 5QP
Ch. 22 - Prob. 6QPCh. 22 - Prob. 7QPCh. 22 - Prob. 8QPCh. 22 - Prob. 9QPCh. 22 - Prob. 10QPCh. 22 - Prob. 11QPCh. 22 - Prob. 12QPCh. 22 - Prob. 13QPCh. 22 - Prob. 14QPCh. 22 - Prob. 15QPCh. 22 - Prob. 16QPCh. 22 - Prob. 17QPCh. 22 - Prob. 18QPCh. 22 - Prob. 19QPCh. 22 - Prob. 20QPCh. 22 - Prob. 21QPCh. 22 - Prob. 22QPCh. 22 - Prob. 24QPCh. 22 - Prob. 28QPCh. 22 - Prob. 29QPCh. 22 - Prob. 31QPCh. 22 - Prob. 32QPCh. 22 - Prob. 33QPCh. 22 - Prob. 34QPCh. 22 - Prob. 35QPCh. 22 - Prob. 36QPCh. 22 - Prob. 37QPCh. 22 - Prob. 38QPCh. 22 - Prob. 39QPCh. 22 - Prob. 40QPCh. 22 - Prob. 41QPCh. 22 - Prob. 42QPCh. 22 - Prob. 43QPCh. 22 - Prob. 44QPCh. 22 - Prob. 45QP
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- What is the difference between our Solar System, our galaxy, and the Universe?arrow_forward1. Which of these is true about the Big Bang model? a. The singularity is an established, well-defined part of the model. b. Cosmic expansion stopped at some point in time. c. Part of its proof is the amounts of H and He we have in the universe today. d. The Big Bang was a big explosion that threw matter into many different directionsarrow_forward1. Why big bang theory the most accepted theory on the origin of the universe? 2. What does the Hindu text Rigveda describe about the universe?\ 3. How Did everything as we know it today, come into being?arrow_forward
- . The temperature of background radiation left over from the Big Bang during the creation of the universe is 3 K. What is the temperature of the universe a) in °C? b) in °F?arrow_forwardWhy couldn’t atomic nuclei exist when the e of the Universe was less than 2 minutes?arrow_forwardWhat are the largest known structures in the Universe?arrow_forward
- State three experimental findings that support the Big Bang model of the universe.arrow_forwardFind the approximate mass of the dark and luminous matter in the Milky Way galaxy. Assume the luminous matter is due to approximately 1011 stars of average mass 1.5 times that of our Sun. and take the dark matter to be 10 times as massive as the luminous matter.arrow_forwardDescribe some possible futures for the universe that scientists have come up with. What property of the universe determines which of these possibilities is the correct one?arrow_forward
- 1. What is formed when there is a fusion of two deuterium nuclei in big bang nucleosynthesis? 2. What are the conditions in the universe so that a nuclear fusion could occur? 3. What is formed when there is fusion of deuterium and tritium? 4. What was formed as the universe expanded and cooled down?arrow_forward4. Which of the following constituents of the Universe is present in the highest fraction in terms of its contribution to the total energy of the Universe? a. Dark Matter. b. Dark Energy. c. Light. d. Normal (baryonic) matter.arrow_forwardDefine matter and antimatter.arrow_forward
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