ASTR 1346 TEST 1 ACTUAL QUESTIONS 2026 WITH VERIFIED ANSWERS.

Page | 1

ASTR 1346 TEST 1 ACTUAL
QUESTIONS 2026 WITH VERIFIED
ANSWERS.

1. What is a solar prominence? - correct answer-It is solar
material from the chromosphere following the arches of the
sun's magnetic field.




2. What is solar granulation? - correct answer-the bubbling
pattern on the photosphere produced by the underlying
convection




3. What are solar plages? - correct answer-a bright region in
the chromosphere of the Sun, typically found in regions of
the chromosphere near sunspots.




4. How long does the sun's light take to get to earth? - correct
answer-8 minutes




5. How long does the sun's photons and particles take to get to
the earth? - correct answer-2-4 days

, Page | 2




6. What is luminosity? - correct answer-Total energy output
emitted per second ( measured in absolute brightness)




7. What is apparent brightness? - correct answer-a star's
brightness as seen from Earth (measured in energy/second
over area)




8. Apparent brightness is... - correct answer-inversely
proportionate to the square of its distance




9. Apparent brightness equation - correct answer-
luminosity/distance^2




10. Star O temp - correct answer-30,000 K




11. Star B temp - correct answer-20,000 K