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

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