Observations of the shift toward the red in stellar absorption spectra for stars in galaxies outside out own implies that
A. these stars are receding away from us.
B. objects observed in the light of these stars will appear more blue than red.
C. these stars are part of a rapidly spinning galaxy.
D. these stars are headed toward us.
Answer: A
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Which of the following statements is FALSE?
A) In our universe, at earlier times, everything was closer together. B) The universe is expanding. C) For an observer located in a galaxy all other distant galaxies would appear to move away from his. D) The universe looks the same in all directions; i.e. it is homogeneous and isotropic. E) We are at the center of the universe.
Why is the Coriolis effect so weak on Venus?
A) because Venus is so hot B) because Venus rotates so slowly C) because Venus has such a thick atmosphere D) because Venus has such a strong greenhouse effect
What do we mean when we say that electron energy levels in atoms are quantized?
What will be an ideal response?
A system for which there are no outside effects is said to be ______________
Fill in the blank(s) with correct word