The building blocks of atoms are protons, neutrons, and electrons.
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ASTR 100 Introduction to Astronomy Quiz 2 Answers
1. The building blocks of atoms are protons, neutrons, and electrons.
2. High temperature is not required for nuclear fusion to occur.
3. The energy of light _____ when the wavelength of the light _____ .
4. One can learn the _____ and the _____ of a star from its Doppler shift.
5. Isotopes of an atom contain the same number of _____ but different numbers of _____ .
6. There are three different types of spectrum. Which of the following is the chief factor in determining which type of spectrum is produced by an object?
7. If a star has an absolute magnitude of 5.0 and belongs to spectral class G6, then this must be a ____ star.
8. Main Sequence stars are mainly powered by ______ fusion.
9. Which of the following is not part of the solar surface or solar atmosphere?
10. The strong force acts over _____ distances.
11. The radius of a star that has a surface temperature of 27,830 K and is 10000 times brighter than the sun is ____ Rsun.
12. The wavelength of a light wave having a frequency of 100,000,000 Hz is ____ meters.
13. A distant exoplanet's temperature is found to be about 260 Kelvin. This means it radiates most strongly at a wavelength of ____ nm.
14. The observed wavelength of a spectral line from a nearby star is 3.33 x 10^-7 m. This spectral line should have a wavelength of 3.77 x 10^-7 m. Therefore this star has a velocity of ____ km/s.
15. A star that has a parallax of 0.035 arcseconds is _____ light-years away from the Earth.
16. The luminosity of a star with a radius of (6.20x10^6) meters and a surface temperature of 30,000 Kelvin is ______ Watts.
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