Astro 1 Exam 2 2024/2025 Exam
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Already Graded A+
As a blackbody's temperature increases, it also becomes _________ and
_________.
more luminous; redder
more luminous; bluer
less luminous; redder
less luminous; bluer
more luminous; stays the same color - 🧠ANSWER ✔✔more luminous;
bluer
How do astronomers learn what elements are present in a given star?
look at what color light dominates its continuous spectrum
listen for coded signals in the radio waves it gives off in the FM band
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,look at the absorption lines in its spectrum
send spacecraft like Voyager to examine its make-up from close-up
compare visible-light photographs of the star (taken with large telescopes)
to those of the Sun. - 🧠ANSWER ✔✔look at the absorption lines in its
spectrum
How fast do electro-magnetic waves travel?
at the speed of sound
at the speed of light
at the speed of charge
at different speeds, depending on the temperature of the atoms that
produce them
they always have zero speed - 🧠ANSWER ✔✔at the speed of light
Individual "particles" of light are called
electrons
wavelengths
photons
nuclei
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, atoms - 🧠ANSWER ✔✔photons
Light has aspects of
only a wave.
only a particle.
both a particle and a wave.
neither a particle nor a wave. - 🧠ANSWER ✔✔both a particle and a wave
As wavelength increases, the energy of a photon _________ and its
frequency _________.
increases; decreases
increases; increases
decreases; decreases
decreases; increases - 🧠ANSWER ✔✔decreases; decreases
If the wavelength of a beam of light were to double, how would that affect
its frequency?
The frequency would be four times higher.
The frequency would be two times higher.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions with Detailed Verified
Answers (100% Correct Answers) |
Already Graded A+
As a blackbody's temperature increases, it also becomes _________ and
_________.
more luminous; redder
more luminous; bluer
less luminous; redder
less luminous; bluer
more luminous; stays the same color - 🧠ANSWER ✔✔more luminous;
bluer
How do astronomers learn what elements are present in a given star?
look at what color light dominates its continuous spectrum
listen for coded signals in the radio waves it gives off in the FM band
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
1
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,look at the absorption lines in its spectrum
send spacecraft like Voyager to examine its make-up from close-up
compare visible-light photographs of the star (taken with large telescopes)
to those of the Sun. - 🧠ANSWER ✔✔look at the absorption lines in its
spectrum
How fast do electro-magnetic waves travel?
at the speed of sound
at the speed of light
at the speed of charge
at different speeds, depending on the temperature of the atoms that
produce them
they always have zero speed - 🧠ANSWER ✔✔at the speed of light
Individual "particles" of light are called
electrons
wavelengths
photons
nuclei
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
2
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, atoms - 🧠ANSWER ✔✔photons
Light has aspects of
only a wave.
only a particle.
both a particle and a wave.
neither a particle nor a wave. - 🧠ANSWER ✔✔both a particle and a wave
As wavelength increases, the energy of a photon _________ and its
frequency _________.
increases; decreases
increases; increases
decreases; decreases
decreases; increases - 🧠ANSWER ✔✔decreases; decreases
If the wavelength of a beam of light were to double, how would that affect
its frequency?
The frequency would be four times higher.
The frequency would be two times higher.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
