ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
9th Edition
ISBN: 9780135795750
Author: Bennett
Publisher: PEARSON
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Chapter 11, Problem 54EAP
To determine
The gas pressure of the atmosphere inthe three layers.
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62. Pressure of the Photosphere. The gas pressure of the photosphere
changes substantially from its upper levels to its lower levels.
Near the top of the photosphere, the temperature is about 4500 K
and there are about 1.6 x 1016 gas particles per cubic centimeter.
In the middle, the temperature is about 5800 K and there are
about 1.0 x 10" gas particles per cubic centimeter. At the bottom
of the photosphere, the temperature is about 7000 K and there
are about 1.5 × 10" gas particles per cubic centimeter. Use the
ideal gas law (Mathematical Insight 14.2) to compare the
pressures
of each of these layers; explain the reason for the trend
that you find. How do these gas pressures compare with Earth's
atmospheric pressure at sea level?
Describe what the Sun would look like from Earth if the entire photosphere were the same temperature as a sunspot.
The Sun's photosphere is
a. the central region where the Sun originates
b. the part of the Sun which the light comes that we see when we look at the Sun with our eyes
c. the hottest region of the Sun
d. the outermost layers of the Sun's atmosphere
e. the first region you would come to when leaving the core
Chapter 11 Solutions
ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
Ch. 11 - Prob. 1VSCCh. 11 - Prob. 2VSCCh. 11 - Prob. 3VSCCh. 11 - Prob. 1EAPCh. 11 - Prob. 2EAPCh. 11 - Prob. 3EAPCh. 11 - Prob. 4EAPCh. 11 - Prob. 5EAPCh. 11 - Prob. 6EAPCh. 11 - Prob. 7EAP
Ch. 11 - Prob. 8EAPCh. 11 - Prob. 9EAPCh. 11 - Prob. 10EAPCh. 11 - Prob. 11EAPCh. 11 - Prob. 12EAPCh. 11 - Prob. 13EAPCh. 11 - Prob. 14EAPCh. 11 - Prob. 15EAPCh. 11 - Prob. 16EAPCh. 11 - Prob. 17EAPCh. 11 - Prob. 18EAPCh. 11 - Prob. 19EAPCh. 11 - Prob. 20EAPCh. 11 - Prob. 21EAPCh. 11 - Prob. 22EAPCh. 11 - Prob. 23EAPCh. 11 - Prob. 24EAPCh. 11 - Prob. 25EAPCh. 11 - Which of these groups of particles has the...Ch. 11 - Prob. 27EAPCh. 11 - Prob. 28EAPCh. 11 - Prob. 29EAPCh. 11 - Prob. 30EAPCh. 11 - Prob. 31EAPCh. 11 - Prob. 32EAPCh. 11 - Prob. 33EAPCh. 11 - 34. What causes the cycle of solar activity? (a)...Ch. 11 - 35. Which of these things poses the greatest...Ch. 11 - Prob. 37EAPCh. 11 - Prob. 38EAPCh. 11 - Prob. 39EAPCh. 11 - Prob. 41EAPCh. 11 - Prob. 42EAPCh. 11 - Prob. 43EAPCh. 11 - Prob. 44EAPCh. 11 - Prob. 45EAPCh. 11 - Prob. 46EAPCh. 11 - Prob. 47EAPCh. 11 - Prob. 48EAPCh. 11 - Research: Current Solar Weather. Daily information...Ch. 11 - Prob. 51EAPCh. 11 - Prob. 52EAPCh. 11 - Prob. 53EAPCh. 11 - Prob. 54EAPCh. 11 - Prob. 55EAPCh. 11 - Prob. 56EAP
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- 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_forwardIf a sunspot has a temperature of 4200 K and the average solar photosphere has a temperature of 5780 K, how much more energy is emitted in 1 second from a square meter of the photosphere compared to a square meter of the sunspot? (Hint: Use the Stefan-Boltzmann law, Eq. 7-1.)arrow_forwardFrom the information in Figure 15.21, estimate the speed with which the particles in the CME in parts (c) and (d) are moving away from the Sun. Figure 15.21 Flare and Coronal Mass Ejection. This sequence of four images shows the evolution over time of a giant eruption on the Sun. (a) The event began at the location of a sunspot group, and (b) a flare is seen in far-ultraviolet light. (c) Fourteen hours later, a CME is seen blasting out into space. (d) Three hours later, this CME has expanded to form a giant cloud of particles escaping from the Sun and is beginning the journey out into the solar system. The white circle in (c) and (d) shows the diameter of the solar photosphere. The larger dark area shows where light from the Sun has been blocked out by a specially designed instrument to make it possible to see the faint emission from the corona. (credit a, b, c, d: modification of work by SOHO/EIT, SOHO/LASCO, SOHO/MDI (ESA & NASA))arrow_forward
- If 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_forwardIf a sunspot has a temperature of 4,270 K and the average solar photosphere has a temperature of 5,780 K, how many times more energy is emitted in 1 second from a square meter of the photosphere compared to a square meter of the sunspot? (Hint: Use the Stefan-Boltzmann law, E = σT4 (J/s/m2) where E is the energy, σ is a proportionality constant equal to 5.67 ✕ 10−8 J/s/m2/K4, and T is the temperature in kelvins.)arrow_forwardHow many watts of radiation does a 1-meter square region of the Sun's photosphere emit at a temperature of 500 K ? How much would the wattage increase if the temperature was doubled?arrow_forward
- If the temperature at the centre of the sun is 15,000,000 K and the temperature of the photosphere is 5,800 K, what is the ratio of the temperature at the centre of the Sun compared to the photosphere? Express your final answer in the fully factorised form x : 1, where x is a number that you should determine to an appropriate number of significant figures and write it using scientific notation.arrow_forward7 Why do sunspots look dark? they are holes in the photosphere through which the cooler interior of the Sun is visible O they are much cooler than the rest of the surface of the Sun due to changes in the Sun's magnetic field O they are patches of the photosphere that burn up, creating ashes that look dark O Sunspots are regions in the upper chromosphere where there is a lot of coronium, which absorbs light O they are much hotter than the surrounding area, so their emission peaks in UV wavelengths, which our eyes cannot see с C 5 O 0 D "Aarrow_forwardIf the color of the sun's photosphere's maximum intensity light is green, is this the color we normally observe for the photosphere? Why or why not? (I would assume it is not, but I do not know why...)arrow_forward
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