properties of a star, science homework help
Question 1 (1 point)Which property of a star can be determined from its color?
mass |
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stellar distance |
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surface temperature |
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volume |
Question 2 (1 point)Which main sequence stars are the least massive?
blue |
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orange |
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red |
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yellow |
Question 3 (1 point)The sun belongs to which class of stars?
black hole |
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main sequence |
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red giant |
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white dwarf |
Question 4 (1 point)Which terrestrial planet has a surface landscape similar to that of the older areas of the Earth’s moon?
Mercury |
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Neptune |
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Uranus |
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Venus |
Question 5 (1 point)What can astronomers determine based on the observed red shifts in the spectral lines of distant galaxies?
Earth is in the center of the universe. |
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The universe is contracting. |
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The universe is expanding. |
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The universe is in a steady state. |
Question 6 (1 point)Which of these discoveries led to the modern view of the solar system regarding the orbits of the planets?
circles |
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ellipses |
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hyperbolas |
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parabolas |
Question 7 (1 point)Which features are found on both Mars and Earth?
active volcanoes |
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erosional features related to flowing water |
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impact craters preserved from early in the planets’ histories |
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oceans |
Question 8 (1 point)When a medium-sized, main sequence star, like our sun, has exhausted the fuel in its inner region, it becomes which type of star?
black dwarf |
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black hole |
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brown dwarf |
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red giant |
Question 9 (1 point)What is used to determine the distances to the stars?
emission nebulae |
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fluorescence |
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stellar mass |
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stellar parallax |
Question 10 (1 point)The apparent backward “drift” of the planets compared to the background stars is known by what term?
occultation |
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precession |
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Ptolemaic motion |
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retrograde motion |