The centers of granules
a. are hot material rising to the photosphere from below.
b. are cool material falling from the photosphere to the regions below.
c. are fainter and hotter than their surroundings.
d. are brighter and cooler than their surroundings.
e. show strong Zeeman effects.
a
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Triton and Pluto both probably originated in the Kuiper Belt
Indicate whether the statement is true or false
When a light ray travels between any two points, the path it takes is the one that (Hint: Eliminate answers you know are wrong.)
a. covers the greatest distance. b. follows the greatest index of refraction. c. avoids travel in more than one medium. d. is the mean between the longest and the shortest paths. e. takes the least time.
A grating has 450 lines per millimeter. What is the highest order m that contains the entire visible spectrum from 400 nm to 700 nm?
A) m = 2 B) m = 3 C) m = 4 D) m = 5 E) m = 6
The Large Megllanic Cloud is
A) a bright nebula within our galaxy. B) an irregular galaxy colliding with the Milky Way. C) the farthest known object visible to the naked eye in a clear night time sky. D) an unusually bright planetary nebula.