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ASTRO 101 - EXAM 1 UMICH 2025
BRAND NEW ACTUAL EXAM WITH
ANSWERS.
1. We measure the flow of energy in light in units of - correct
answer -watts (1 watt = 1 joule/s)
2. White light is - correct answer -combination of all colors of the
rainbow
3. Transmission - correct answer -transparent objects transmit
light
4. Opaque objects block (absorb) light
5. What determines the appearance of everything around us -
correct answer -interactions between light and matter
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6. Amplitude - correct answer -Height of a wave
7. Wavelength - correct answer -The length of a wave
8. Distance between two wave peaks
9. Frequency - correct answer -time it took for the vibration of the
wave to complete
10. Number of times per second that a wave vibrates up and
down
11. Wave - correct answer -pattern of motion that can carry
energy without carrying matter along with it
12. Light wave - correct answer -vibration of electric and
magnetic fields
13. Sound travels in - correct answer -air, water, and space
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14. Light travels in - correct answer -air, water, space, and a
pure vacuum
15. Water waves occur - correct answer -only in fluids
16. Wave-speed - correct answer -does not depend on
amplitude, frequency, or wavelength
17. Each photon has - correct answer -wavelength and
frequency
18. The energy of a photon depends on - correct answer -its
frequency
19. Polarization - correct answer -the direction in which a light
wave is vibrating
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20. Reflection can - correct answer -change the polarization of
light
21. Higher photon energy - correct answer -the shorter its
wavelength
22. Atomic number - correct answer -number of protons in
nucleus
23. Atomic mass number - correct answer -number of protons
and neutrons
24. Molecules - correct answer -consist of two or more atoms
25. Isotope - correct answer -same number of protons but
different number of neutrons
ASTRO 101 - EXAM 1 UMICH 2025
BRAND NEW ACTUAL EXAM WITH
ANSWERS.
1. We measure the flow of energy in light in units of - correct
answer -watts (1 watt = 1 joule/s)
2. White light is - correct answer -combination of all colors of the
rainbow
3. Transmission - correct answer -transparent objects transmit
light
4. Opaque objects block (absorb) light
5. What determines the appearance of everything around us -
correct answer -interactions between light and matter
, Page | 2
6. Amplitude - correct answer -Height of a wave
7. Wavelength - correct answer -The length of a wave
8. Distance between two wave peaks
9. Frequency - correct answer -time it took for the vibration of the
wave to complete
10. Number of times per second that a wave vibrates up and
down
11. Wave - correct answer -pattern of motion that can carry
energy without carrying matter along with it
12. Light wave - correct answer -vibration of electric and
magnetic fields
13. Sound travels in - correct answer -air, water, and space
, Page | 3
14. Light travels in - correct answer -air, water, space, and a
pure vacuum
15. Water waves occur - correct answer -only in fluids
16. Wave-speed - correct answer -does not depend on
amplitude, frequency, or wavelength
17. Each photon has - correct answer -wavelength and
frequency
18. The energy of a photon depends on - correct answer -its
frequency
19. Polarization - correct answer -the direction in which a light
wave is vibrating
, Page | 4
20. Reflection can - correct answer -change the polarization of
light
21. Higher photon energy - correct answer -the shorter its
wavelength
22. Atomic number - correct answer -number of protons in
nucleus
23. Atomic mass number - correct answer -number of protons
and neutrons
24. Molecules - correct answer -consist of two or more atoms
25. Isotope - correct answer -same number of protons but
different number of neutrons
