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Astronomy
Chapter 4 Review Game
Light wiz
Em Waves
student
The Atom
pro
Spectrum
genius
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In materials like glass or water the speed of light
is _________.
A. Reduced
B. Increased
C. The same as in vacuum
D. Sometimes reduced and sometimes
increased
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Reduced
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An object is moving very fast perpendicularly to
your line of sight. What shift will you observe
in its spectrum?
A. Blue shift
B. Red shift
C. Yellow shift
D. No shift
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No shift
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When astronomers study the light emitted from the Sun they notice that
the light emitted from the east limb (edge) is blueshifted while the
light emitted west limb is redshifted. The reason for this is that
A. The Sun contains different chemicals that emit different colors.
B. The distance between the Earth and the Sun is constantly
changing.
C. The Sun is rotating.
D. The two opposing limbs have different surface temperatures.
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The Sun is rotating.
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A night vision camera
A. Is just much more sensitive to visible light than your
eyes.
B. Uses a detector sensitive to infrared light, so you can
see objects that are warmer than their surroundings.
C. Can only detect green photons, which reflect well in
the dark, but which our eyes have trouble seeing.
D. Uses a detector sensitive to X-ray light, so you can
see through the dark.
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Uses a detector sensitive to infrared light, so you
can see objects that are warmer than their
surroundings.
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________ range in wavelength from millimeters to
hundreds of meters.
A. X-rays
B. Gamma rays
C. Ultraviolet waves
D. Visible light waves
E. Radio waves
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Radio waves
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Star A is blue, Star B is yellow, and Star C is red.
Which one of these is the hottest star?
A. Star A.
B. Star B.
C. Star C.
D. From color, temperature cannot be
predicted.
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Star A
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The electrons are quantized in an atom. That
means
A. The electrons are in bulk.
B. The electrons can stay only in specific orbits.
C. The quantity of electrons keep changing.
D. All of the above.
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The electrons can stay only in specific orbits.
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________ occurs when an electron in an atom
jumps from a lower energy orbital to a higher
energy orbital.
A. Ionization
B. Acceleration
C. Excitation
D. Relaxation
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Excitation
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You are heating a jar full of hydrogen and observing its
spectrum. When you add more hydrogen to it, what
happens to the spectral lines in the spectrum?
A. The positions of emission lines will change.
B. You will start seeing lots of absorption lines instead
of emission lines.
C. The positions of emission lines will remain the same
but the lines will get broader and brighter.
D. There will be no change in the spectrum.
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The positions of emission lines
will remain the same but the
lines will get broader and
brighter.
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What is an atmospheric window?
A. A region in the atmosphere where light can get
through.
B. A region in the atmosphere where infrared radiation
can penetrate.
C. A range of wavelengths of electromagnetic radiation
which transmit through the Earth's atmosphere.
D. A part of the upper atmosphere with depleted
.
ozone
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A range of wavelengths of
electromagnetic radiation
which transmit through the
Earth's atmosphere.
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Which of the following electromagnetic waves are
completely blocked by the Earth's atmosphere?
A. Radio waves
B. Visible light
C. Infrared
D. X-rays
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X-rays
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A(n) ___________ spectrum has bright lines on dark
background.
A. Absorption
B. Emission
C. Continuous
D. None of these
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Emission
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Wien's law allows astronomers to measure what
property of a star?
A. The surface temperature of the star.
B. The chemical composition of the star.
C. The distance to the star.
D. All of the above.
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The surface temperature of
the star.
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As a solid is heated (from a low to a high
temperature) the radiated light will move
through what sequence of colors?
A. Red, yellow, blue.
B. Blue, yellow, red.
C. Yellow, red, blue.
D. Blue, red, yellow.
E. It depends on what solid is being heated.
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Red, yellow, blue.
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Conservation of energy requires that if an atom
absorbs a photon.
A. An electron ends up with an energy equal to
that of the photon.
B. The atom must emit an electron.
C. The atom must emit a photon.
D. An electron rises to a new orbital with an
energy equal to that of the previous orbital plus
the energy of the photon.
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An electron rises to a new
orbital with an energy
equal to that of the
previous orbital plus the
energy of the photon.
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Category Slide
If a photon's frequency increases its wavelength
A. Will decrease.
B. Will increase.
C. Will not change.
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Will decrease.
10 point
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A temperature of 0 Kelvin means there is
essentially no motion at the atomic level.
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True
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In the Orion constellation are stars Rigel, a blue
supergiant, and Betelgeuse, a red supergiant.
Which star has a greater surface temperature?
A. Rigel.
B. Betelgeuse.
C. They have the same surface temperature.
D. There is not enough information to tell.
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Rigel
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Spectral lines shifted toward higher
frequencies are called _____.
A. Red-shifted
B. Blue-shifted
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Blue-shifted
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What conclusion can we draw about the motion of
a star that does not show any Doppler shift in its
spectrum?
A. The star is not moving.
B. The star is spinning fast.
C. The star does not have a magnetic field.
D. The star may be moving perpendicular to our
line of sight.
E. We cannot draw any conclusions about the
motion of this star.
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The star may be moving
perpendicular to our line of
sight.
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