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Author Question: __________ in Earth's atmosphere absorbs most ultraviolet radiation coming from the Sun. a. ... (Read 74 times)

Mr.Thesaxman

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on: Jul 27, 2018
__________ in Earth's atmosphere absorbs most ultraviolet radiation coming from the Sun.
 
  a. Methane b. Three bound oxygen atoms
  c. Water vapor d. Carbon dioxide

Question 2

A star's apparent magnitude is a measure of
 
  a. how bright it appears to us if it is at its actual distance.
  b. how bright it appears to us at a standard distance of 10 pc.
  c. its energy output per second compared to the Sun.
  d. its mass in solar masses.
  e. its surface temperature in Kelvin.


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aadams68

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Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

a


Mr.Thesaxman

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Reply 2 on: Jul 27, 2018
Excellent

peter

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Reply 3 on: Yesterday
:D TYSM

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