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Earth History: Dating Methods
Test Description: Dating Techniques
Instructions: Answer all questions to get your test result.
1) Law of Superposition
A
continuous movement of Earth's water between Earth's surface and it's atmosphere
B
faults are always younger than the rock layers they cut through
C
states that the oldest sedimentary rock layers will always be on the bottom unless they have been disturbed by geologic force
D
fossil fuels are made in the youngest layers of rock
2) Which one is an example of absolute dating?
A
A scientist uses the radioactive decay of uranium to find the age of a rock.
B
A scientist has a short period of time to figure out the age.
C
A scientist is trying to figure out if a fossil is older or younger than another in the fossil record.
D
A scientist comparing rocks to one another.
3) Law of crosscutting relationships explain the age of a fault caused by an earthquake?
A
The fault is older than the rocks above it.
B
The fault is younger than the rocks above it.
C
The fault is younger than the rocks it cuts through.
D
The fault is older than the rocks it cuts through.
4) Compared to the length of time for the first half-life of a sample of a radioactive isotope, the length of time for the second half-life is
A
none of the above
B
less
C
the same
D
greater
5) _____________ is the time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.
A
Relative Dating
B
Half-life
C
Crater Counting
D
Radioactive Decay
6) Uniformitarianism is
A
The principle that the Earth changed gradually over time.
B
The principle that Earth is getting larger.
C
The principle that Earth is getting smaller.
D
The principle that the Earth changed violently over a short period of time
7) Catastrophism is
A
Earth being formed gently and slowly
B
Earth being changed violently and quickly
C
Earth sometimes being formed
D
Earth not being formed
8) Trilobite is an example of an index fossil. Which best describes the criteria necessary for a fossil to be used as an index fossil?
A
The fossil must be from a mammal
B
The fossil must be found both in rock layers on the land and in rock layers under the ocean
C
The fossil must be found in at least three different types of sedimentary rock layers and at least two different types of
D
The fossil must be found in areas on Earth and must be from an organism that lived for a relatively short time span
9) Fossils are found in which type of rock?
A
Igneous
B
Shale
C
Sedimentary
D
Basalt
10) Which principle is often used in relative dating to identify the sequence of events in geological formations?
A
Principle of Superconductivity
B
Principle of Supersymmetry
C
Principle of Superposition
D
Principle of Supernaturalism
11) What is the primary use of the Carbon-14 isotope in scientific research?
A
Dating ancient artifacts to find the exact age.
B
Fueling nuclear reactors
C
Detecting radiation
D
Dating ancient artifacts to find the relative age.
*select an answer for all questions
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