The Moon rises later each day because ________.
A. the Moon follows an elliptical orbit around Earth
B. Earth moves approximately one degree per day in its orbit around the Sun
C. the Moon moves in its orbit faster than Earth rotates
D. the Moon shifts eastward relative to the stars in its orbit around Earth
E. None of these choices is correct.
Answer: D
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Most interstellar clouds are:
A) much bigger than our solar system. B) about the size of Earth. C) similar in size to clouds in Earth's atmosphere. D) much smaller than the clouds in Earth's atmosphere. E) about the size of a wavelength of light.
Two 100 W bulbs differ in that one is designed for the American 120 V rms and the other is designed for the European 220 V rms. Which bulb has the greater resistance, and what is that resistance?
A. American, 288
B. American, 144
C. European, 484
D. European, 242 
E. they are the same, 265 
Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of __________
Fill in the blank(s) with correct word
You are studying a mystery companion to an evolved star, with mass transfer happening. Which of the following properties suggests that the companion is definitely a black hole?
A) The mystery companion has a mass of over 1.4 solar masses. B) The mystery companion has a mass of over 3 solar masses. C) The mystery companion has an X-ray emitting accretion disk. D) The mystery companion gives off periodic X-ray bursts.