Northern hemisphere winters are colder than northern hemisphere summers because
a. Earth is closer to the Sun during the summer than it is during the winter.
b. the snow that falls in the northern latitudes cools Earth during the winter.
c. the light from the Sun shines more directly on the northern hemisphere during the summer.
d. the period of sunlight is longer during the summer than during the winter.
e. the light from the Sun shines more directly on the northern hemisphere during the summer and the period of sunlight is longer during the summer than during the winter.
Question 2Relative to the stars in the sky, the Sun moves
a. about one degree westward each day.
b. about one degree eastward each day.
c. about 360 degrees westward each day.
d. about 360 degrees eastward each day.
e. along the celestial equator.
Question 3You lay on your back and watch the stars for an entire night. You focus on one star and notice that it does not rise or set, nor does it trace circles in the sky. What is your latitude on Earth? Which star would be at your zenith if you stood up? Which significant feature of the celestial sphere lies along your horizon?
What will be an ideal response?
Question 4a) Explain which star is apparently brighter to you as viewed from Earth on a clear night, a star with a negative value or a star with a positive value. b) If star A has an apparent visual magnitude that is more negative than star B, which is the brighter star?
What will be an ideal response?
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