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WorksheetsEarth History
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
All are types of fossils EXCEPT
a)
Mineral Replacement
b)
Bone neutralization
c)
Carbon Film
d)
Cast and Mold
2.
The half-life Carbon-14 is 5,730 years. How much parent material is left after 5,730 years?
a)
75%
b)
50%
3.
The absolute age of an igneous rock can best be determined by ...
a)
comparing radioactive isotopes
b)
comparing crystal sizes
4.
The bottom layer of rock is
a)
the oldest
b)
has fossils
5.
Index fossils are useful for determining the relative age by ...
a)
a narrow time range and a wide geographic range
b)
a narrow time range and a narrow geographic range
6.
In what way are index fossils and layers of of ash found in ice cores?
a)
both are used for relative dating
b)
both only occur in igneous rocks
7.
Which time period on the chart was the longest?
a)
Permian
b)
Cambrian
8.
Trilobite fossils are found in Cambrian rocks but not in Triassic rocks. This is best explained because ...
a)
Trilobites went extinct before the Triassic rocks
b)
fossils did not form during the Triasssic
9.
Ice cores are most useful for determining
a)
the atmospheric composition of the past
b)
the number of species alive in the pas
10.
Which layer of rock is most likely the youngest?
a)
A
b)
D
11.
Which example is NOT evidence of the continents being joined together in the past?
a)
Most land is in the northern hemisphere
b)
Similar fossils found across the Earth is in the same layer of rock
12.
The age of the Earth is measured in _______ of years.
a)
millions
b)
billions
13.
Many marine fossils are found in what is now desert. Which hypothesis best explains this?
a)
The desert was once an ocean
b)
Marine organisms lived on land in the past
14.
A rock is formed by the cementing layers of sediment. What type of rock is formed?
a)
Igneous
b)
Volcanic
c)
Metamorphic
d)
Sedimentary
15.
Jane is older than Fred, who is older than Rick. This is an example of ...
a)
Relative dating
b)
Law of Superposition
16.
Which statement is NOT true?
a)
Humans and dinosaurs lived at the same time
b)
The continents were once combined in a supercontinent called Pangaea
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