
Geological Unconformities and Dating Principles

Interactive Video
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Science
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between relative dating and absolute dating?
Relative dating is used in archaeology, while absolute dating is not.
Relative dating is more accurate than absolute dating.
Relative dating provides an exact age, while absolute dating does not.
Relative dating compares ages, while absolute dating provides a specific age.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the principle of original horizontality, how are sedimentary layers initially deposited?
Randomly
Horizontally
At an angle
Vertically
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the law of superposition state about the age of rock layers?
All layers are the same age.
The bottom layer is the oldest.
The bottom layer is the youngest.
The top layer is the oldest.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the principle of lateral continuity suggest about rock layers?
They are always vertical.
They are deposited in random patterns.
They extend laterally until they thin out or encounter a barrier.
They are always horizontal.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can geologists use the principle of lateral continuity to understand rock formations?
By assuming rocks on opposite sides of a valley were once connected.
By measuring the thickness of the rock layers.
By determining the exact age of the rocks.
By identifying the mineral composition of the rocks.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the principle of cross-cutting relationships, which is older: a fault or the rock it cuts through?
It depends on the type of rock.
They are the same age.
The rock is older.
The fault is older.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an angular unconformity?
A type of rock layer that is always horizontal.
A surface where younger sedimentary rocks rest on the eroded surface of tilted or folded older rocks.
A boundary between two parallel rock layers.
A fault line that cuts through multiple rock layers.
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