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1 | |
We don’t see stars in the daytime because |
| | A) | the sun blocks their view. |
| | B) | they all set as the sun comes up. |
| | C) | light from the sun overwhelms the light from the stars. |
| | D) | the stars only emit light at night. |
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2 | |
As a star undergoes collapse, its rate of rotation (Hint: think of an ice skater) |
| | A) | increases. |
| | B) | decreases. |
| | C) | stays the same. |
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3 | |
The stars that last the longest are those with |
| | A) | the largest masses. |
| | B) | the smallest masses. |
| | C) | the largest radii. |
| | D) | the hottest temperatures. |
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4 | |
Ultimately the sun will end up as |
| | A) | a white dwarf. |
| | B) | a black hole. |
| | C) | a neutron star. |
| | D) | None of the above. |
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5 | |
The iron in an old anvil was produced by |
| | A) | chemical reactions. |
| | B) | volcanoes. |
| | C) | fission process in stars. |
| | D) | fusion processes in stars. |
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6 | |
How many stars have we sent space probes to? |
| | A) | Several, but all nearby |
| | B) | Just two |
| | C) | One |
| | D) | None |
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7 | |
If two stars in the same constellation appear equally bright then we know that |
| | A) | they must both be the same distance away. |
| | B) | they both must have the same apparent brightness. |
| | C) | they both must have the same intrinsic brightness. |
| | D) | All of the above are true. |
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8 | |
When we say a star like our sun has a “color” we mean that |
| | A) | it shines with only one wavelength of light. |
| | B) | it shines with a few wavelengths of light to produce a spectral pattern but most of the wavelengths are around the sun’s color. |
| | C) | it shines with all wavelengths of light but the brightest wavelength corresponds to the sun’s color. |
| | D) | it has an absorption line at the wavelength corresponding to the sun’s color. |
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9 | |
In the HR diagram, where are the “normal” stars?
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| | A) | A |
| | B) | B |
| | C) | C |
| | D) | In all three areas: A, B, and C |
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10 | |
What remnants might we expect to see after a supernova? |
| | A) | A black hole |
| | B) | A pulsar |
| | C) | A neutron star |
| | D) | All of these |
| | E) | None of these |
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11 | |
If our Sun were to suddenly collapse and become a black hole with the same mass as it now has, what would happen to the earth? |
| | A) | The earth would immediately get sucked into the center of the black hole. |
| | B) | The earth would start spiraling into the center of the black hole before it finally falls in. |
| | C) | The earth would continue to orbit in the same way as if nothing happened. |
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