Earth History: Dating Methods Question Preview (ID: 61978)
Dating Techniques.
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Fossils are found in which type of rock?
a) Igneous
b) Shale
c) Basalt
d) Sedimentary
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
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 areas on Earth and must be from an organism that lived for a relatively short time span
d) The fossil must be found in at least three different types of sedimentary rock layers and at least two different types of
Catastrophism is
a) Earth being changed violently and quickly
b) Earth being formed gently and slowly
c) Earth not being formed
d) Earth sometimes being formed
Uniformitarianism is
a) The principle that the Earth changed gradually over time.
b) The principle that the Earth changed violently over a short period of time
c) The principle that Earth is getting larger.
d) The principle that Earth is getting smaller.
_____________ 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) Half-life
b) Radioactive Decay
c) Crater Counting
d) Relative Dating
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) the same
b) greater
c) less
d) none of the above
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 older than the rocks it cuts through.
d) The fault is younger than the rocks it cuts through.
Which one is an example of absolute dating?
a) A scientist comparing rocks to one another.
b) A scientist is trying to figure out if a fossil is older or younger than another in the fossil record.
c) A scientist uses the radioactive decay of uranium to find the age of a rock.
d) A scientist has a short period of time to figure out the age.
Law of Superposition
a) continuous movement of Earth's water between Earth's surface and it's atmosphere
b) states that the oldest sedimentary rock layers will always be on the bottom unless they have been disturbed by geologic force
c) faults are always younger than the rock layers they cut through
d) fossil fuels are made in the youngest layers of rock
What is the primary use of the Carbon-14 isotope in scientific research?
a) Dating ancient artifacts to find the exact age.
b) Detecting radiation
c) Dating ancient artifacts to find the relative age.
d) Fueling nuclear reactors
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