Galaxy Classification and Hubble's Law
Authored by Charles Martinez
Physics
9th - 12th Grade
NGSS covered
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hubble's Law states that galaxies are receding away from us at a speed that is proportional to their
size
mass
wavelength
distance
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Hubble's Law enables astronomers to estimate the distance to a galaxy if they can determine that galaxy's
mass
temperature
spectral type
velocity of recession
Tags
NGSS.HS-ESS1-2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
According to Hubble's Law, more rapidly moving galaxies are now
closer to us
accelerating rapidly
further away from us
being pulled into black holes
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the explanation for the high redshifts observed in distant objects
They are rapidly moving away from us.
Their light has been gravitationally redshifted.
Their light has lost energy over time while traveling this distance.
In the time it took their light to reach us, the universe expanded and, thus, their wavelengths.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A star that is moving toward the earth will have which of the following?
Dim lines
Unshifted lines
Red shifted lines
Blue shifted lines
Tags
NGSS.HS-PS4-3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
You observe two galaxies. galaxy X has a recessional velocity of 1000 km/s while galaxy Y has a recessional velocity of 2000 km/s. Based on this information, which of the following is true?
galaxy X is 4 times as far away as galaxy Y
Galaxy Y is 4 times as far away as galaxy X
Galaxy X is 2 times as far away as galaxy Y
Galaxy Y is 2 times as far away as galaxy X
Tags
NGSS.HS-ESS1-2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
According to Hubble's Law, if galaxy B is three times farther away from us than galaxy A, then galaxy B will
move toward us nine times faster than A
move toward us three times faster than A
move away from us nine times faster than A
move away from us three times faster than A
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