Earth Science Geology, the Environment, and the Universe

Section 1: The Rock Record

Self-Check Quizzes-English

1
What era of geologic time ended with the largest extinction event in Earth history?
A)the Precambrian
B)Paleozoic Era
C)Mesozoic Era
D)Cenozoic Era
2
According to the figure, what marked the end of the Mesozoic Era?
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A)the building of the Appalachians ends
B)the extinction of many marine invertebrates
C)the extinction of the dinosaurs
D)mammals are abundant
3
What is the longest division of time in the geologic time scale?
A)an era
B)an epoch
C)a period
D)an eon
4
Which division of the geologic time scale includes the Cambrian, Ordovician and the Silurian?
A)eon
B)era
C)period
D)epoch
5
What marks the end of the Proterozoic Eon?
A)free oxygen
B)mammals
C)oxygen breathing organisms
D)the first appearance of organisms with hard parts
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