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Earth's History Flashcards | StudBud
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Earth's History
Earth's History
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Answers
1
When studying Earth's history, a carbon film is a kind of ______.
Evolution
Living organism
Fossil
Rock
2
How many kinds of fossils have we studied?
7
6
8
5
3
True or False: Early Earth's atmosphere was full of hydrogen and nitrogen.
False
True
4
Which is NOT true about the Law of Superposition?
Helps us figure out the age of fossils
Formed in vertical sedimentary layers
Oldest layer is at the bottom
Higher layers are younger
5
True or False: The relative age of a rock is its age compared to the ages of other rocks.
True
False
6
An index fossil ______.
is a break in the Earth's crust.
helps geologists tell the relative ages of rock layers.
is the time required for half of the unstable element to decay.
is all the atoms of a particular type of matter.
7
The Silurian and Devonian periods are often called the ____.
Age of Invertebrates
Age of Fishes
Age of Amphibians
Age of Reptiles
8
Which is NOT one of the major subdivisions of Earth's history?
Eras
Periods
Stages
Eons
9
This is an example of a ____.
Trace Fossil
Preserved Remain
Carbon Film
Cast
10
Many of our current mountain ranges formed during the ____.
Permian period
Carboniferous period
Quaternary period
Tertiary period
11
True or False: Scientists believe we are currently living in the Anthropocene Epoch.
False
True
12
We have very few fossils from the Precambrian Time because _____.
organisms were too small to make visible fossils
there were no living organisms during this time
most of the organisms didn't have hard parts
fossil-eating organisms in the next eon consumed them
13
Scientists hypothesize that Earth formed ____.
4.6 billion years ago
88 million years ago
544 million years ago
88 billion years ago
14
The Cretaceous, Jurassic, and Triassic periods are part of the ____.
Mesozoic Era
Phanerozoic Eon
Cenozoic Era
Paleozoic Era
15
This is an example of a(n) _____.
Extrusion
Unconformity
Fault
Intrusion
16
Which of the following times does NOT have a mass extinction?
Middle Paleozoic Era
Mesozoic Era
Early Paleozoic Era
Late Paleozoic Era
17
Who studies fossils?
Geologist
Fossilologist
Paleontologist
Anthropologist
18
When did old continents break apart?
Late Precambrian Earth
Early Earth
19
This is an example of a _____.
Cast
Mold
Preserved Remain
Petrified Fossil
20
_____ means when an organism no longer exists and never will again.
Fossil Record
Extinct
Evolution
Scientific Theory
