AS 101 QUIZ #5 Answers: CORRECT ANSWERS ARE IN GREEN BOLD
Sorry, ignore the red X’s, couldn’t get the out of the formatting.
Question 1 1 / 1 point
Based on what you have learned, the apparent visual magnitude of a star tells us about:
the amount of visible light energy reaching us on Earth from that star.
The total amount of electromagnetic radiation emitted by the star.
The apparent size of the star as seen from Earth.
The amount of visible light produced by the star.
Question 2 1 / 1 point
Several stars are listed with their apparent visual magnitudes. Rank them from brightest to dimmest
(brightest first) as seen from Earth in visible light.
__2__ Deneb: 1.25
__3__ Gamma Ursae Minoris: 3.00
Copula, AKA the Whirlpool Nebula: 8.1
__4__ (Note: this is actually a nebula containing many stars--- the brightest of which has a
mgnitude of 8.1.)
__1__ Sirius: -1.46 Question 1 / 1
The same stars are listed again with their apparent visual magnitudes. Select the stars that can be seen
with the unaided eye.
Gamma Ursae Minoris 3.00
Question 4 2 / 2 points
In dim light (as outdoors at night) the pupil of the human eye expands t