Chapter 4 Quiz: A Trip Through Geologic Time

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1.
1 point
A gap in the geologic record formed when sedimentary rocks cover an eroded surface is called a(n)
2.
1 point
The process by which all different kinds of living things have changed over long periods of time is called
3.
1 point
How do most fossils form?
4.
1 point
The law of superposition states that, in horizontal layers of sedimentary rock, each layer is
5.
1 point
A fossil formed when minerals replace all or part of an organism is called a
6.
1 point
The relative age of a rock is
7.
1 point
The fossil record shows that life on Earth has changed over time. For example, paleontologists have found that older rocks contain fossils of
8.
1 point
What is a fossil?
9.
1 point
The geologic time scale is a record of
10.
1 point
Why are index fossils useful to geologists?