Multiple Choice
The sky will begin to turn milky white
A) when the concentration of ozone begins to reach dangerous levels.
B) when small particles such as dust and salt become suspended in the air.
C) when the relative humidity decreases below about ten percent.
D) on an oppressively hot day of the year.
Correct Answer:
Verified
Correct Answer:
Verified
Q17: Illustrate with a sketch the refraction and
Q18: Why do distant mountains appear blue?
Q19: Describe the changes in appearance of a
Q20: Cloud iridescence is caused mainly by<br>A) refraction.<br>B)
Q21: Which of the following phenomena is not
Q23: Write a set of instructions for observing
Q24: Which of the following would you most
Q27: To see a sundog,you should look about
Q39: Red sunsets, blue moons, and milky-white skies
Q66: You would most likely see a tangent