Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 16, Problem 19Q
To determine
The description of the interior of Sun with respect to the physical processes occurring at its different depths.
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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
Describe the process as a photon (energy) created in the Sun's core makes its way out into space. Make sure to consider the different layers that the photon must pass through to reach the Sun's surface.
Which of the following layers of the Sun can be seen with some type of telescope? Consider all forms of light, but do not consider neutrinos or other particles. (Give ALL correct answers in alphabetical order, i.e., B, AC, BCD...)A) Corona.B) Photosphere.C) Radiation Zone.D) Chromosphere.E) Convection Zone.F) Core.
Chapter 16 Solutions
Universe
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- Describe the two main ways that energy travels through the Sun.arrow_forwardThe capture of too few solar neutrinos by Davis in the solar neutrino experiment a. can be explained if the sun is not undergoing thermonuclear fusion of hydrogen in its core. b. indicates that the sun’s core is much cooler than expected. c. indicates that the sun’s core is much hotter than expected. d. indicates that the sun’s core is convective. e. is explained by none of the above.arrow_forwardDescribe what the Sun would look like from Earth if the entire photosphere were the same temperature as a sunspot.arrow_forward
- 1) What is thermal equilibrium? Is the Sun in thermal equilibrium? How do we know this? 2) In order to maintain thermal equilibrium, how much energy must the Sun generate every second?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_forwardWhy was the detection of solar neutrinos important? a) They have been suggested as an important source of solar energy. b) They provide direct evidence for solar oscillations. c) The provide direct evidence for the proton-proton chain. Where does nuclear energy production (fusion) occur in the Sun? a) In the nuclear zone b) In all layers of the Sun c) In the photosphere d) In the corearrow_forward
- sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1. Calculate its surface temperature. σ= 5.67*10-8W/m2K4. a) 6800K b) 3400K c) 6196K d) 7200Karrow_forwardFrom which atmospheric layer of the Sun did the photons originate that resulted in sunburn? How do you know?arrow_forward21. While observing the Sun, you note a large number of sunspots. What can you conclude? This is a period of low solar activity. Earth's climate will be unusually cold. The Sun is less luminous than usual. There are likely to be an above average number of flares and prominences. The Sun's rotation is slower than average.arrow_forward
- Status of Sun's core and its temperature (The letters correspond to the stages in Figure 21.1.) 3. Stage A: T10 million K. Sun is in equilibrium. 4. Stage B: T 100 million K Core collapse stops. 5. Stage C: Helium flash 6. Stage D: T 100 million K. Sun is in equilibrium. 7. Stage E: T800 million K. Core collapse stops. If fusion is occurring in core or in shell around the core, mark with a ✔in the correct column. Core fusion H to He FUSION ✓ Core fusion He to C Shell fusion H to He Shell fusion He to C PRESSURE VERSUS GRAVITY CORE • REST OF THE STAR Pressure comes from electron degeneracy Pressure Gravity Gravity Pressure region contracts and heats Pressure > Gravity region expands and coolsarrow_forwardThe average density of the sun is 1. 4 g/cm3 What do you expect the density to be at 0.25 of Rsun? 2) The average density of the sun is 1.4 g/cm3. The following resource claims that the sun's core has a density of 150 g/cm3 and a radius of 25% of the sun's radius. Assume the core has a constant density and calculate it's mass. What fraction of the sun's mass is in the core according to that resource?arrow_forwardRank the layers of the Sun based on their average temperature, from hottest to coolest. A) Corona B) Radiative Zone C) Convection Zone D) Chromospere E) Core F) Photosphere Answer: Submit All Answers Last Answer: EADBCF Incorrect, ONE try left!!arrow_forward
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