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Topic 6: History of Earth Flashcards | StudBud
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Topic 6: History of Earth
What does the law of superposition state?
Which rock layer is the youngest?
Topic 6: History of Earth
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#geology
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1
Which rock layer is the youngest?
Layer 2
Layer 1
Layer 4
Layer 5
2
What does the law of superposition state?
Rock layer positions have nothing to do with age.
Old and young rock layers mixed together.
Younger rock layers are found on top of old rock layers.
Older rock layers are found on top of young rock layers.
3
The Precambrian Time, covers about _____% of the history on the Geologic Time Scale.
63
25
88
7
4
Which of the following is NOT a characterisitc of an index fossil?
Lived a long time.
Found all over the world.
Easily recognizable.
Abundent
5
What era did humans first exist in?
Paleozoic
Cenozoic
Pre-Cambrian
Mesozoic
6
How old is the Earth?
4.6 milllion years old
4.6 billion years old
2 billion years
3.4 billion years
7
What is the Mesozoic Era known for?
Mammals
Dinosaurs
Fish
Humans
8
What geology term would describe determing the age of rocks by comparing two or more rocks?
Law of superposition
Absolute age
Igneous intrusion
Relative age
9
Fossils are
remains or traces of prehistoric life
living creatures
the oldest layers of rocks in an area
younger than the rock they are buried in
10
Which is the oldest rock layer?
B
A
D
C
11
Which type of animals were not alive during Precambrian time?
One-celled organisms
Dinosaurs
Jellyfish
Bacteria
12
What types of events marked the end of major eras of geological time?
Many new species evolving
Mass extinctions
New continents being created
Many new plant species being found
13
When did Pangea form?
Mesozoic
Precambrian
Paleozoic
Cenozoic
14
What is the name for the groups into which eras are divided?
Divisions
Periods
Precambrian
Sections
15
The law of inclusion states
A rock found inside another rock layer is older
A rock found inside another rock layer is younger
A rock found inside another rock is the same age
16
Precambrian time began with the _______ .
appearance of human beings
development of vertebrates
rise of the dinosaurs
formation of Earth
17
What is the study of Earth's structure, rocks, and the history of Earth?
Chemistry
Biology
Geology
Heredity
18
What does the law of crosscutting state?
the older rock cuts through younger rock
the older rock is on the bottom
the younger rock is on the top
the rock that cuts through another layer is younger
19
Which of the following is NOT used to determine the relative age of rock layers?
Law of superposition
Igneous intrusions
Radiometric dating
Faults
20
What is the Paleozoic Era known for?
Humans
Fish
Dinosaurs
Mammals
