Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 7E
What it the Zeeman effect and what does it tell us about the Sun?
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Chapter 15 Solutions
Astronomy
Ch. 15 - Describe the main differences between the...Ch. 15 - Describe how energy makes its way from the nuclear...Ch. 15 - Make a sketch of the Sun’s atmosphere showing the...Ch. 15 - Why do sunspots look dark?Ch. 15 - Which aspects of the Sun’s activity cycle have a...Ch. 15 - Summarize the evidence indicating that over...Ch. 15 - What it the Zeeman effect and what does it tell us...Ch. 15 - Explain how the theory of the Sun’s dynamo results...Ch. 15 - Compare and contrast the four different types of...Ch. 15 - What are the two sources of particles coming from...
Ch. 15 - How does activity on the Sun affect human...Ch. 15 - How does activity on the Sun affect natural...Ch. 15 - Table 15.1 indicates that the density of the Sun...Ch. 15 - Starting from the core of the Sun and going...Ch. 15 - Since the rotation period of the Sun can be...Ch. 15 - Suppose an (extremely hypothetical) elongated...Ch. 15 - The text explains that plages are found near...Ch. 15 - Why would a flare be observed in visible light,...Ch. 15 - How can the prominences, which are so big and...Ch. 15 - If you were concerned about space weather and...Ch. 15 - Suppose you live in northern Canada and an...Ch. 15 - The edge of the Sun doesn’t have to be absolutely...Ch. 15 - Show that the statement that 92% of the Sun’s...Ch. 15 - From Doppler shifts of the spectral lines in the...Ch. 15 - Assuming an average sunspot cycle of 11 years, how...Ch. 15 - This chapter gives the average sunspot cycle as 11...Ch. 15 - The escape velocity from any astronomical object...Ch. 15 - Suppose you observe a major solar flare while...Ch. 15 - Suppose an eruptive prominence rises at a speed of...Ch. 15 - From the information in Figure 15.21, estimate the...
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- Describe in your own words what is meant by the statement that the Sun is in hydrostatic equilibrium.arrow_forwardA friend who has not had the benefit of an astronomy course suggests that the Sun must be full of burning coal to shine as brightly as it does. List as many arguments as you can against this hypothesis.arrow_forwardWhat do measurements of the number of neutrinos emitted by the Sun tell us about conditions deep in the solar interior?arrow_forward
- Make a sketch of the Sun’s atmosphere showing the locations of the photosphere, chromosphere, and corona. What is the approximate temperature of each of these regions?arrow_forwardDescribe how energy makes its way from the nuclear core of the Sun to the atmosphere. Include the name of each layer and how energy moves through the layer.arrow_forwardWhat is the approximate temperature of the sun at its chromosphere ?arrow_forward
- Describe the transport of energy, from the deep interior of the Sun, to when it finally reaches the Earth. Include the various methods of transport.arrow_forwardWhy does the Sun not collapse under its enormous weight? a) The Sun is about 4.6 billion years old. If it could have collapsed by now , it would have. b) Because the Sun is in hydrostatic equilibrium. c) Because the Sun is not in hydrostatic equilibrium. d)More than one of the above.arrow_forwardMatch the Solar feature to its description. (Select P-Photosphere, C-Chromosphere, O-cOrona, W-solar Wind, F-Flares, T- sunspoTs. If the first is P and the rest C, enterPCCCCC). A) dark regions associated with the Sun's magnetic fieldB) flow of particles from the SunC) bright visible surface of the SunD) hot, rarefied gas surrounding the SunE) place where the majority of absorption lines formF) burst of energy that shows up as a sudden brightening of the Sunarrow_forward
- How does energy move in the Sun from where it is created to where the Sun emits that energy?arrow_forwardExplain how we know that the Sun’s energy is not supplied either by chemical burning, as in fires here on Earth, or by gravitational contraction (shrinking).arrow_forwardIf a sunspot has a temperature of 4200 K and the average solar photosphere has a temperature of 5800 K, how many times brighter is a square meter of the photosphere compared to a square meter of the sunspot? (Hint: Use the Stefan-Boltzmann law in Reasoning with Numbers 6-1.)arrow_forward
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