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Earth History Review Flashcards | StudBud
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Earth History Review
Earth History Review
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1
Why is the Fossil Record Incomplete?
There's too many index fossils
There isn't enough Amber
Most organisms never became fossils
Scientists disagree on it
2
What type of rock is created by high heat and pressure from the earth?
Sedimentary
Fossil
Metamorphic
Igneous
3
Which Era includes the "Age of the Reptiles"
Paleozoic
Precambrian
Cenozoic
Mesozoic
4
What is different about an atom that makes it an isotope?
Number of Neutrons
Number of Protons
Number of Cells
Number of Electrons
5
The age of the earth
4.6 billion yrs
4.6 million yrs
4.6 trillion yrs
3.6 billion yrs
6
What type of fossil is shown?
Mold
Preserved
Petrified
Cast
7
Which of the following does not lead to a mass extinction?
Change in CO2 levels
Volcanic Eruption
Meteor impact
Change in temperature
8
In Earth's History, which of the following events was the last to occur?
The First Reptile Evolved
The First Land Plants Evolved
The First Mammal Evolved
The First Fish Evolved
9
Scientists that study rock layers are called
Biologists
Geologists
Paleontologists
Chemists
10
Based on the graph, what is the half life of the Isotope represented?
3 hours
6 hours
12 hours
9 hours
11
Which of the following is not something the fossil record shows us?
How Earth's surface has changed
What past life forms were like
The order in which organisms lived
Every species of life that has lived on Earth
12
What Era is known as the "Age of Marine Life"?
Cenozoic
Paleozoic
Mesozoic
Precambrian
13
What type of rock is the only type that fossils can be found in?
Graphite
Metamorphic
Sedimentary
Igneous
14
What is the current ERA that we are living in?
Mesozoic
Cenozoic
Paleozoic
Precambrian
15
The geologic time that includes over 80% of all earth history.
Paleozoic
Cenozoic
Mesozoic
Precambrian
16
Continue the table of half life for Carbon 14. What percentage of C-14 would remain after 22,800 years?
15%
6.25%
3.125%
12.5%
17
In the cross section below, what is the youngest layer?
D
A
B
C
18
What type of fossil is shown?
Cast
Trace
Preserved
Petrified
19
How many half lives have occurred if there is 12.5% Parent Material and 87.5% Daughter Material?
2
3
4
1
20
A type of fossil that is created when minerals replace bone and turn it into stone.
Petrified
Preserved
Mold
Cast
21
Which of the following is NOT a reason a fossil makes a good Index Fossil?
It lived in multiple Eras
It makes a good fossil
It is found globally
It lived a short time
22
The end of the Paleozoic Era when 95% of species went extinct is known as the
Great Dying
Dinosaur Dying
Cambrian Explosion
Meteor Explosion
