Earth Science Geology, the Environment, and the Universe

Section 3: Cosmology

Self-Check Quizzes-English

1
The study of cosmology is concerned with __________.
A)the evolution of the universe
B)the origin of the universe
C)the nature of the universe
D)all of the above
2
Is the rate of the universe expansion speeding up or slowing down?
A)It was slowing down, but now it is speeding up.
B)It has always been slowing down.
C)It was speeding up, but now it is slowing down.
D)It has always been speeding up.
3
What theory does cosmic background radiation support?
A)the steady-state theory
B)the inflationary universe model
C)the theory of evolution
D)the Big Bang theory
4
From their motion, astronomers have inferred that galaxies contain not just stars but also _______.
A)many planets larger than Earth
B)a great amount of unseen, or dark, matter
C)billions of enormous black holes
D)many elements unknown to us
5
In the Big Bang theory, what balances the momentum of the expansion of the universe?
A)the inward force of gravity
B)the momentum of the galaxies
C)the outward force of gravity
D)the critical density of the universe
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