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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