21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 22, Problem 15QP
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Check out a sample textbook solutionStudents have asked these similar questions
1. 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?
1Which of the following best describes a frame of reference?
an experiment that proved that Earth did not have an aether wind
the theory that describes the behavior and characteristics of objects moving at relativistic speeds
the effect of the slowing of time as an object moves with high speeds
a point in which someone relates the behavior of an object from one perspective
2If an electron moves from n = 5 to n = 1, what wavelength of light is emitted? (h = 6.626 x 10-34, 1 eV = 1.6 x 10-19 J)
4008 nm
434 nm
95 nm
1281 nm
3Which of the following best describes a frame of reference?
an experiment that proved that Earth did not have an aether wind
the theory that describes the behavior and characteristics of objects moving at relativistic speeds
the effect of the slowing of time as an object moves with high speeds
a point in which someone relates the behavior of an object from…
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.
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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- 1. 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_forwardOxygen Atoms in People. Figure 5.7 shows that oxygen makes up about 65% of the mass of a human being. A single oxygen atom has a mass of 2.66 × 10−26 kg. (a) Use this fact to estimate the number of oxygen atoms in your body. (Hint: If you know your weight in pounds, you can convert to kilograms by dividing by 2.2.) (b) Compare your answer to the number of stars in the observable universe (which is roughly 1022).arrow_forward10. According to the Big Bang Theory, how old is the universe?arrow_forward
- Scientific models are often built in stages or layers, starting with a single idea. Which idea eventually grew into the big bang model of the universe?arrow_forwardSince the time of Copernicus, each revolution in astronomy has moved humans farther from the center of the universe. Now it appears that we may not even be made of the most common form of matter. Trace the changes in scientific thought about the central nature of Earth, the Sun, and our Galaxy on a cosmic scale. Explain how the notion that most of the universe is made of dark matter continues this “Copernican tradition.”arrow_forwardHow Do We Know? How does the scientific method give scientists a way to know about nature?arrow_forward
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