astronomy chapter 4 review game. light wiz em waves student the atom pro spectrum genius 10 point 10...
TRANSCRIPT
AstronomyChapter 4 Review Game
Light wizLight wizEm Waves
studentThe Atom
proSpectrum Spectrum genius genius
10 point 10 point 10 point 10 point
20 points 20 points 20 points 20 points
30 points 30 points 30 points 30 points
40 points 40 points 40 points 40 points
50 points 50 points 50 points 50 points
In materials like glass or water the speed of light is _________. A. ReducedB. IncreasedC. The same as in vacuumD. Sometimes reduced and sometimes increased
10 point Check
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 shiftB. Red shiftC. Yellow shiftD. No shift
20 points Check
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.
30 points Check
The Sun is rotating.
30 points Back to Category Slide
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.
40 points Check
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-raysB. Gamma raysC. Ultraviolet wavesD. Visible light wavesE. Radio waves
10 points Check
10 points Back to Category Slide
Radio waves
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.
10 point Check
Star A
10 point Back to Category Slide
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.
20 points Check
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. IonizationB. AccelerationC. ExcitationD. Relaxation
30 points Check
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.
40 points Check
The positions of emission lines will remain the same
but the lines will get broader and brighter.
40 points Back to Category Slide
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.
50 points Check
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 wavesB. Visible lightC. InfraredD. X-rays
10 point Check
X-rays
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A(n) ___________ spectrum has bright lines on dark background.
A. AbsorptionB. EmissionC. ContinuousD. None of these
20 points Check
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.
30 points Check
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The surface temperature of the star.
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.
40 points Check
40 points Back to Category Slide
Red, yellow, blue.
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.
50 points Check
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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If a photon's frequency increases its wavelength
A. Will decrease.B. Will increase.C. Will not change.
10 point Check
Will decrease.
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A temperature of 0 Kelvin means there is essentially no motion at the atomic level.
20 points Check
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.
30 points Check
Rigel
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Spectral lines shifted toward higher frequencies are called _____.
A. Red-shifted
B. Blue-shifted
40 points Check
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.
50 points Check
The star may be moving perpendicular to our line
of sight.
50 points Back to Category Slide
