Which galaxy do you come from?
A: The Andromeda Galaxy.
B: The Milky Way Galaxy.
C: The Virgo Galaxy.
D: The Antenna Galaxy.
E: The Whirlpool Galaxy.
Ans: B: The Milky Way Galaxy.
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Conversion of Units: A spherical fruit has a radius of 3.23 cm. What is the volume of the fruit in cubic meters?
A. 1.41 × 10-4 m3 B. 1.41 m3 C. 4.23 × 10-4 m3 D. 4.23 m3
Based on current understanding, the minimum mass of a black hole that forms during a massive star supernova is roughly
A) 0.5 solar masses. B) 1.4 solar masses. C) 3 solar masses. D) 10 solar masses.
Why do we think that the solar system formed from a rotating, collapsing gas cloud that ended up as a disk orbiting the Sun?
a. Most of the planets revolve and rotate in the same direction and in the same plane. b. We see clouds of gas and dust in space with apparently young stars in them. c. We see disks around young stars. d. All of the above.
Which statement correctly locates the formation of the Earth and the appearance of the first humans on the cosmic calendar, which compresses the 14-billion year history of the universe into one "year," where "now" is exactly midnight,
A) Earth forms in January, life begins in April, and humans appear in early December. B) Earth forms in January, life begins in September, and humans appear in October. C) Earth forms in early September, life begins in late September, humans appear a few hours before midnight, Dec 31. D) Earth forms in early September, life begins in November, and humans appear on Dec 15.