Glencoe Earth Science

Chapter 14: Geologic Time

Section 2 Self-Check Quiz-Eng.

1
During the first billion years of Earth's history, ___________.
A)there was life everywhere
B)trilobites evolved
C)vertebrates evolved
D)there was no life
2
The longest section of Earth's history was __________.
A)Cretaceous period
B)Precambrian time
C)Paleozoic Era
D)Cenozoic Era
3
Where did the oxygen in Earth's atmosphere come from originally?
A)from plants
B)from cyanobacteria
C)from animals
D)from rocks
4
Why is the Precambrian fossil record so sparse?
A)Vertebrates developed then.
B)There were no living things.
C)All organisms lived on land.
D)Many of the organisms had soft bodies.
5
What are Ediacara life-forms?
A)direct ancestors of Cambrian life-forms
B)unique organisms that went extinct
C)no one knows for sure
D)alien life-forms
6
Which of the following is a species common during the Paleozoic Era?
A)dinosaurs
B)Homo sapiens
C)trilobites
D)Ediacara life-forms
7
__________ are ancestors of reptiles.
A)Mammals
B)Birds
C)Dinosaurs
D)Amphibians
8
The Appalachian Mountains, an old mountain range, was formed during what era?
A)Cenozoic
B)Paleozoic
C)Mesozoic
D)Precambrian
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