Welcome to the Quiz!
This quiz contains 4 questions from a mix of 1 subtopics.
According to Hubble's law, what is the relationship between the recessional velocity of distant galaxies and their distance from Earth?
They are unrelated
There is no relationship
They are inversely proportional
They are directly proportional
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How can Hubble's constant be used to estimate the age of the universe?
By calculating 1 divided by Hubble's constant
By measuring the velocity of galaxies
By measuring the distance of galaxies
By comparing the recessional velocity of galaxies
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A galaxy has a recessional velocity of 3,200 km/s. Ho = 2.3 x 10-18 s-1
How far away from Earth is the galaxy?
7.36 x 10-15 km
7.19 x 10-22 km
1.39 x 1021 km
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Galaxy A has a recessional velocity of 6,500 km/s. Galaxy B has a recessional velocity of 4,000 km/s.
Which of the following is true?
Galaxy A is further away from Earth than Galaxy B
Galaxy A is closer to Earth than galaxy B
Galaxy A is travelling slower than galaxy B
Galaxy B is travelling faster than galaxy A
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