Earth Science Geology, the Environment, and the Universe

Section 2: Other Galaxies in the Universe

Self-Check Quizzes-English

1
What do scientists use to measure Earth's distance from globular clusters?
A)variable stars
B)the steady-state theory
C)the Hubble constant
D)the Milky Way
2
Hubble observed redshift in the emission spectra of most galaxies outside the Milky Way. What inference from this data contributed to the development of the Big Bang theory?
A)The universe was not expanding until recently.
B)The universe expanded for a while and then stopped recently.
C)The universe was bigger and less dense at some point in the past.
D)The universe was smaller and denser at some point in the past.
3
Which of the galaxies shown has the same shape as our galaxy?
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A)A
B)B
C)C
D)D
4
Some galaxies are organized into large groups called __________.
A)superclusters
B)variable galaxies
C)super galaxies
D)solar systems
5
Most of the mass in cluster galaxies is __________.
A)pulsating
B)visible
C)spinning
D)invisible
6
Which of the galaxies shown has an elliptical shape?

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A)A
B)B
C)C
D)D
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