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ATROLOGY CHPT 7, ASTRONOMY CHPT 6,
ASTRONOMY CHPT 5 ACTUAL QUESTIONS
2026 WITH VERIFIED ANSWERS.
You are shopping for telescopes online. You find two in your
price range. One of these has an aperture of 20 cm, and one
has an aperture of 30 cm. Which should you choose, and why?
- correct answer-The 30 cm, because the light-gathering power
will be better.
When less energy is radiated from a terrestrial planet, its
__________ increases until a new __________ is achieved. -
correct answer-temperature; equilibrium
Two stars are of equal luminosity. Star A is 3 times as far from
you as star B. Star A appears _________ star B. - correct
answer-one-ninth as bright as
When you look at the sky on a dark night and see stars of
different colors, which are the hottest? - correct answer-blue
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Why are the young stars blue? - correct answer-because they
are relatively hot stars
Astronomers may describe certain objects as being redshifted
or blueshifted. Select all true statements about this
phenomenon from those listed below. - correct answer-These
objects are exhibiting the Doppler effect.
Wavelengths of light from the objects differ from expected (rest)
wavelengths because the object is moving away from
(redshifted) or toward (blueshifted) the observer.
The image provided shows a light source moving relative to
three different observers: Fred, Velma, and Daphne. If the light
source is emitting green light and moving with sufficient speed,
identify which colors each person could possibly see. - correct
answer-Fred- red
Velma- blue
Daphne- green
Refer to the spectrum of hydrogen in the figure above. Why is
the excited hydrogen gas in the image of Gum 41 glowing red?
- correct answer-Because of its atomic structure, hydrogen gas
has a transition between excited states that produces red light.
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How does the spectrum of a distant star reveal the star's
chemical composition? - correct answer-Dark lines, also called
absorption lines, within the spectra are "fingerprints" for the
different atoms and molecules within a star's atmosphere.
When an electron moves from a higher energy level to a lower
energy level in an atom, - correct answer-a photon is emitted
As wavelength increases, the energy of a photon __________
and its frequency __________. - correct answer-decrease:
decrease
Rank the types of radiation in order of their energy, from least
to greatest. - correct answer-1. radio waves
2. infrared
3. red visible light
4. blue visible light
5. x-rays
6. gamma rays
ATROLOGY CHPT 7, ASTRONOMY CHPT 6,
ASTRONOMY CHPT 5 ACTUAL QUESTIONS
2026 WITH VERIFIED ANSWERS.
You are shopping for telescopes online. You find two in your
price range. One of these has an aperture of 20 cm, and one
has an aperture of 30 cm. Which should you choose, and why?
- correct answer-The 30 cm, because the light-gathering power
will be better.
When less energy is radiated from a terrestrial planet, its
__________ increases until a new __________ is achieved. -
correct answer-temperature; equilibrium
Two stars are of equal luminosity. Star A is 3 times as far from
you as star B. Star A appears _________ star B. - correct
answer-one-ninth as bright as
When you look at the sky on a dark night and see stars of
different colors, which are the hottest? - correct answer-blue
, Page | 2
Why are the young stars blue? - correct answer-because they
are relatively hot stars
Astronomers may describe certain objects as being redshifted
or blueshifted. Select all true statements about this
phenomenon from those listed below. - correct answer-These
objects are exhibiting the Doppler effect.
Wavelengths of light from the objects differ from expected (rest)
wavelengths because the object is moving away from
(redshifted) or toward (blueshifted) the observer.
The image provided shows a light source moving relative to
three different observers: Fred, Velma, and Daphne. If the light
source is emitting green light and moving with sufficient speed,
identify which colors each person could possibly see. - correct
answer-Fred- red
Velma- blue
Daphne- green
Refer to the spectrum of hydrogen in the figure above. Why is
the excited hydrogen gas in the image of Gum 41 glowing red?
- correct answer-Because of its atomic structure, hydrogen gas
has a transition between excited states that produces red light.
, Page | 3
How does the spectrum of a distant star reveal the star's
chemical composition? - correct answer-Dark lines, also called
absorption lines, within the spectra are "fingerprints" for the
different atoms and molecules within a star's atmosphere.
When an electron moves from a higher energy level to a lower
energy level in an atom, - correct answer-a photon is emitted
As wavelength increases, the energy of a photon __________
and its frequency __________. - correct answer-decrease:
decrease
Rank the types of radiation in order of their energy, from least
to greatest. - correct answer-1. radio waves
2. infrared
3. red visible light
4. blue visible light
5. x-rays
6. gamma rays
