Eras Of Earth's History
6 Questions
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Questions and Answers
- 1.A _______________ is where a large number of species die off at the same time.
- A.
Half-life
- B.
Isotopic analysis
- C.
Uniformitarianism
- D.
Mass extinction
- 2.At the beginning of the Paleozoic Era was the _______________ explosion, in which a large variety of organisms developed and evolved.
- A.
Ordovician
- B.
Silurian
- C.
Cambrian
- D.
Cretaceous
- 3.During the ______________ Period, there were huge insects, due in part to the large amount of oxygen in the atmosphere.
- A.
Silurian
- B.
Carboniferous
- C.
Triassic
- D.
Tertiary
- 4.
- A.
Paleozoic, Mesozoic, Cenozoic
- B.
Cenozoic, Paleozoic, Mesozoic
- C.
Paleozoic, Cenozoic, Mesozoic
- D.
Cenozoic, Mesozoic, Paleozoic
- 5.The _______________ Era is referred to as the "Age of Reptiles," because _______________ were the dominant life form.
- A.
Paleozoic; mammals
- B.
Mesozoic; dinosaurs
- C.
Precambrian; jellyfish
- D.
Cenozoic; bacteria
- 6.The ________________ Era is referred to as the "Age of Mammals," since mammals like humans, are the dominant life form.
- A.
Mesozoic
- B.
Paleozoic
- C.
Cenozoic
- D.
Precambrian
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