Name ______________________________________ Date _________
Relative Dating
Unit 3
Lesson 2 Quiz
Key Concepts
Choose the letter of the best answer.
1. Which of these choices is an example of the way
a geologist would use relative dating?
3. An igneous intrusion cuts through three layers of
sedimentary rock. Which rock is the youngest?
A. determining the minerals that make up rocks
A. the igneous intrusion
B. placing rock layers in order of oldest to
youngest
B. the top layer of sedimentary rock
C. classifying rocks as igneous, sedimentary, or
metamorphic
D. the bottom layer of sedimentary rock
C. the middle layer of sedimentary rock
4. Which property of fossils allows scientists to
determine the relative ages of rock layers?
D. using radioactive isotopes to determine the
exact age of rock samples
A. Fossils form from the remains of living
organisms.
2. The picture below shows the rock layers in one
part of the Grand Canyon.
B. Fossils are usually found only in sedimentary
rock.
C. Fossils can be analyzed to determine their
exact ages.
D. Fossils show change over time as species
evolve.
5. A scientist wants to make a geologic column of
rock layers from different parts of a state. How
will the scientist do this?
A. The scientist will organize the layers by
comparing the fossils and types of rocks.
B. The scientist will measure the exact ages of
the rocks found in each part of the state.
C. The scientists will look at the surface features
in each area to organize the layers.
Based on the law of superposition, what is the
order of these rock layers, from oldest to
youngest?
D. The scientist will select one area in the state
and use only those layers to construct the
geologic column.
A. 1, 2, 3, 4
B. 2, 1, 4, 3
C. 3, 4, 1, 2
D. 4, 3, 2, 1
Lesson Quiz
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Grade 7 • Assessment Guide • Florida