How many planets are there in our Solar System?

A. 9
B. 1
C. 4
D. 8


Answer: D

Physics & Space Science

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Which moon shows evidence of rainfall and erosion by some liquid substance?

A. Europa B. Titan C. Ganymede

Physics & Space Science

Which of the following colors has the shortest wavelength?

A. Yellow B. Red C. Orange D. Green

Physics & Space Science

The Andromeda Galaxy (M31) is what type?

a. Spiral b. Irregular c. Elliptical d. Regular spiral

Physics & Space Science

Isaac Asimov, noted popularizer of science and science fiction author, has addressed overpopulation: "democracy cannot survive overpopulation. Human dignity cannot survive [overpopulation]. Convenience and decency cannot survive [overpopulation]

As you put more and more people onto the world, the value of life not only declines, it disappears. It doesn't matter if someone dies, the more people there are, the less one person matters." Respond to Asimov's statement by discussing any evidence available.

Physics & Space Science