Lecture- Tutorials for Introductory Astronomy
3rd Edition
ISBN: 9780321820464
Author: Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher: Addison-Wesley
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Textbook Question
Chapter 3, Problem 7TYP
Two students are looking at a brightly lit full Moon, illuminated by reflected light from the Sun. Consider the following discussion between the two students about what the spectrum of moonlight would look like.
Student 1: I think moonlight is just reflected sunlight, so we will see the Sun's absorption line spectrum.
Student 2: I disagree. An absorption spectrum has to come from a hot, dense object. Since the Moon is not a hot, dense object, it can't give off an absorption line spectrum.
Do you agree or disagree with either or both of the students? Explain your reasoning.
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Students have asked these similar questions
State whether it is true that “the A spectrum is AM0 and the B spectrum is AM1.5”. Explain why B is weaker than A across the whole wavelength range. Show how you estimate the surface temperature of the Sun using the given spectrum.
n = 5
n = 4
3. Refer to the illustration on the right. In a set of
experiments on a hypothetical one-electron atom,
you measure the wavelengths of the photons
emitted from transitions ending in the ground state
(n=1). You also observe that it takes 15 eV to
ionize this atom. (a) What is the energy of the
atom in each of the levels (i.e. n=1, n=2, n=3, n=4,
n=5)? (b) If an electron made a transition from the
n=4 to the n=2 level, what wavelength of light
n = 3
n = 2
would it emit?
n = 1
A = 73.86 nm
A = 75.63 nm
A=79.76 nm
A = 94.54 nm
For the purpose of this exercise, we consider the Earth as a blackbody at a temperature of 300K.
a. Assuming that it is spherical with a radius equals to 6370 km, calculate the total amount energy emitted by the Earth (Hint: The total amount of energy emitted by a surface = amount of energy emitted per unit area x area of the surface).
b. What wavelength range would you recommend to measure radiation emitted by the Earth using a satellite mounted sensor?
Chapter 3 Solutions
Lecture- Tutorials for Introductory Astronomy
Ch. 3 - The electromagnetic spectrum of light is often...Ch. 3 - Prob. 2EPLCh. 3 - Prob. 3EPLCh. 3 - Another property of light is the energy. Which of...Ch. 3 - Prob. 5EPLCh. 3 - Prob. 6EPLCh. 3 - Prob. 7EPLCh. 3 - For each statement (a-d) provided below, circle...Ch. 3 - Prob. 9EPLCh. 3 - Which, if any, of the different wavelengths of...
Ch. 3 - Which, if any, of the different wavelengths of...Ch. 3 - Which, if any, of the different wavelengths of...Ch. 3 - Imagine you are comparing the ability of electric...Ch. 3 - Prob. 2LUPCh. 3 - Prob. 3LUPCh. 3 - Imagine you are comparing the ability of electric...Ch. 3 - Two students are discussing their answers to...Ch. 3 - If two hot plates have the same temperature and...Ch. 3 - Likewise, if two stars have the same surface...Ch. 3 - Prob. 8LUPCh. 3 - Prob. 9LUPCh. 3 - Prob. 10LUPCh. 3 - Prob. 11LUPCh. 3 - Prob. 12LUPCh. 3 - Prob. 13LUPCh. 3 - Prob. 14LUPCh. 3 - The graph below plots the luminosity of a star on...Ch. 3 - Which color of light has the greatest energy...Ch. 3 - Imagine that the blue light and orange light from...Ch. 3 - Prob. 3BLPCh. 3 - Prob. 4BLPCh. 3 - Prob. 5BLPCh. 3 - Prob. 6BLPCh. 3 - Prob. 7BLPCh. 3 - Prob. 8BLPCh. 3 - Prob. 9BLPCh. 3 - Using the blackbody curves shown in Figure 2b, for...Ch. 3 - Prob. 11BLPCh. 3 - Prob. 12BLPCh. 3 - Prob. 13BLPCh. 3 - Prob. 14BLPCh. 3 - Consider the blackbody curves for Stars E and D...Ch. 3 - What type of spectrum is produced when the light...Ch. 3 - What type of spectrum is produced when the light...Ch. 3 - Describe in detail the source of light and the...Ch. 3 - There are dark lines in the absorption spectrum...Ch. 3 - Stars like our Sun have low-density, gaseous...Ch. 3 - Prob. 6TYPCh. 3 - Two students are looking at a brightly lit full...Ch. 3 - Prob. 8TYPCh. 3 - In this activity, we will use a representation of...Ch. 3 - One way an atom emits light (photons) occurs when...Ch. 3 - In which case does an atom emit more energy...Ch. 3 - Two students are talking about how light is...Ch. 3 - Prob. 5LIPCh. 3 - At the right is a sketch showing one of the atoms...Ch. 3 - Prob. 7LIPCh. 3 - At the right is a sketch showing one of the atoms...Ch. 3 - Consider the following discussion between the two...Ch. 3 - Prob. 10LIPCh. 3 - The absorption line spectra for six hypothetical...Ch. 3 - Prob. 2ANPCh. 3 - Prob. 3ANPCh. 3 - Prob. 4ANPCh. 3 - Prob. 5ANPCh. 3 - Prob. 7ANPCh. 3 - Prob. 8ANPCh. 3 - Prob. 9ANPCh. 3 -
Consider the situations shown (A-D).
In which...Ch. 3 -
Consider the situations shown (A-D).
In which...Ch. 3 -
In which of the situations shown (A-D) will the...Ch. 3 -
Imagine our solar system is moving in the Milky...Ch. 3 - Prob. 5DOPCh. 3 - Prob. 6DOPCh. 3 - Prob. 7DOPCh. 3 - Prob. 8DOPCh. 3 - Prob. 9DOP
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