How does the axial tilt of Mars compare with our own?

A) Like Jupiter, Mars always keeps its equator pointing at the Sun.
B) It is about half our own, 12 degrees.
C) It is almost identical to the Earth.
D) Like Saturn, it's about 27 degrees.
E) Like Uranus, it is 98 degrees and flopped over on its side.


C

Physics & Space Science

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A. both will have the same kinetic energy. B. the heavier one will have twice the kinetic energy of the lighter one. C. the heavier one will have four times the kinetic energy of the lighter one. D. the heavier one will have half the kinetic energy of the lighter one. E. the heavier one will have one-fourth the kinetic energy of the lighter one.

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An electric current can consist of

a. positive ions flowing in a liquid. b. negative ions flowing in a liquid. c. electrons flowing in a wire. d. all of the above.

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How good or bad (in terms of pollution) the air is, is rated by a color-coded ________ Index

a. Irritant b. Pollution c. Air Quality d. Pollen

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The discovery that the Universe is expanding faster today than in the past was possible because of observations of

A. Cepheid variable stars. B. Type II (core collapse) supernovae. C. galaxy rotation curves. D. Type Ia (white dwarf) supernovae.

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