SMT 314 - Introduction to Cosmology » Fall 2020 » HW 10

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Question #1
A hydrogen-alpha filter would allow you to examine only the [a]; an x-ray filter would allow you to examine only the [b].
A.   photosphere, pole
B.   corona, light
C.   chromosphere, flare
D.   space, wavelengh
Question #2
Compare and contrast:Solar flares are [a] _______ than CMEs
A.   same
B.   faster
C.   slower
Question #3
Compare and contrast:Solar flares are [a] _______ than CMEs
A.   smaller
B.   larger
C.   same
Question #4
Compare and contrast:Solar flares are [a] _______ damaging than CMEs
A.   less
B.   more
C.   same
Question #5
The photosphere is [a] in color, the chromosphere is [b] in color, and the corona is [c] in color.
A.   white, reddish pink, white
B.   red, white, pink
C.   pink,white, red
D.   white,orange,yellow
Question #6
The solar activity cycle has a period of about 11 years, including the magnetic pole reversal.
A.   TRUE
B.   FALSE
Question #7
The temperature of the Sun decreases from its core to the photosphere, and out through the corona.
A.   prominences
B.   solar winds
C.   chromosphere
D.   spicules
E.   corona
Question #8
As the solar atmosphere expands outward from the Sun, into interplanetary space, it becomes the
A.   helioseismology
B.   solar flares
C.   probes from Earth
D.   ultraviolet waves
E.   sunspots
Question #9
How can we "see" inside the Sun, as well as the far side of the Sun?
A.   they are patches of the photosphere that occasionally burn up, creating soot.
B.   they are holes in the photosphere through with cooler interior of the Sun is visible.
C.   they are regions in which strong magnetic fields make it difficult for fresh supplies of hot, ionized gas to reach the photosphere.
D.   they are much hotter than the surrounding area, so their emission peaks at ultraviolet wavelengths, which our eyes cannot see.
E.   the changing magnetic polarity of the Sun causes gas in the sunspot to cool down substantially.
Question #10
Sunspots appear dark because
A.   differential rotation, winding up the magnetic fields
B.   nuclear explosions
C.   the Zeeman effect and the Maunder minimum
D.   granulation oscillations
E.   a constant dipole magnetic field
Question #11
The 11-year sunspot cycle is driven by:
A.   sunspots
B.   prominences and filaments
C.   solar flares
D.   solar prominences
E.   the Sun's blackbody spectrum
Question #12
Which one of the following is not influenced by the Sun's magnetic field?
A.   its spectrum consists of emission lines of the elements in the Sun, so there are some gaps.
B.   the Sun is too hot to radiate at all wavelengths.
C.   its core is much hotter than its surface, so the shape of the curve is distored.
D.   the coronal mass ejections interfere with the photons, adding too much noise to the spectrum.
E.   the relatively cool outer layers absorb photons emitted in the hot inner parts of the Sun, producing absorption lines.

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