On a clear night you go outside and face south and see circumpolar stars. Then you turn and face north and you see stars rising in the east and setting in the west. Where are you located on Earth?

a. equator b. a mid-latitude between the equator and the north pole
c. south pole d. a mid-latitude between the equator and the south pole


d

Physics & Space Science

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Which of the following types of stars are suitable for advanced life?

A) A-type B) F-type C) O-type D) K-type

Physics & Space Science

Suppose that, through the malicious act of an eight-dimensional alien being, the strong force was suddenly turned off throughout the universe. What would happen almost immediately to atoms?

A) The nuclei of atoms would fall apart. B) Electrons would fall into the nuclei of atoms. C) Atoms would be immediately ionized. D) Nothing; atoms would be unaffected by this change.

Physics & Space Science

An 05 star has an H? line present in its spectra. What color is the line?

a. red
b. no color as the line is in the UV band
c. blue
d. no color as the line is in the infrared band

Physics & Space Science

The light from a distant star is shifted such that the peak of its spectrum, at 620 nm, is shifted to 635 nm. What is its radial velocity relative to Earth?

A. -0.11c B. -0.024c C. -0.15c D. -0.012c

Physics & Space Science