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