You would like to know if a star is coming towards you or away from you. Therefore, you will need to obtain the star's _______________ from its shifted spectra
Fill in the blank(s) with correct word
radial velocity
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The energy of a photon:
A) is inversely proportional to the frequency of the light. B) is inversely proportional to the wavelength of the light. C) depends only on the speed of the light. D) depends only on the mass of the photon.
What are possible reasons that galaxies differ in form?
A.) Pre-galactic clouds have different densities. B.) Pre-galactic clouds have different rotation rates. C.) Galaxies collide with one another, creating different types. D.) All of the above. E.) A and B.
Neutron stars are 100,000 times denser than white dwarfs
Indicate whether the statement is true or false
Glaciers will retreat when the amount of accumulation
A) is less than the amount of ablation each year. B) exceeds the amount of ablation each year. C) is equal to the amount of ablation.