Astronomy
What property of the colors of the rainbow make them different from each other
They have different speeds in a vacuum
Only certain colors of light are electromagnetic radation
They have different wavelenghts
Only blue and violet light consist of photons
None of the above
When an electron moves from a smaller orbit to a larger orbit, a photon is
Emitted
Absorbed
Either emitted or absorbed
What is a release of a huge balloon-shaped region of high-energy gas from the corona into the solar wind
Which expression gives the number of times, N, that the sun has orbited the center of the milky way galaxy if the age of the sun is A and the orbital period is P
N = A x P
N = A + P
N = A / P
N = A - P
N = A x P^2
Which of the following objects is least likely to be found in the halo of the milky way galaxy
White dwarf
Old, low mass main sequence star
Young, high mass main sequence star
Globular star cluster
Brown dwarf
In what constellation is the center of the milky way galaxy located
Andromeda
Ursa major
Sagittarius
Lyra
Taurus
The outer halo of the milky way galaxy is primarily composed of
Main sequence stars of all masses
Red giant stars
Stars similar to the sun
Horizontal branch stars
Dark matter
A standard candle has a known (blank). By measuring its apparent brightness, we can determine its (blank)
Mass, distance
Luminosity, mass
Mass, rotation rate
Luminosity, distance
Temperature, luminosity
In comparison to the other galaxies in the local group, the milky way and the andromeda galaxy are
Smaller than average size
About average size
Larger than average size
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