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Multiple
Choice
Completion
Completion
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Fossils most often form when a
dead organism is buried in
sediments.
A 100
True
A 100
Absolute age examines the
position of rocks in a
sequence.
A 200
False; Relative
A 200
According to the principle of
superposition, the youngest rock
layers are closest to the surface.
A 300
True
A 300
Carbon films are formed
when a thin film of carbon
is left, forming an outline
of the original organism.
A 400
True
A 400
To be a useful index fossil, a
species must have been rare.
A 500
False; common (abundant)
A 500
Dinosaur footprints are
original remains.
B 100
False; trace fossils
B 100
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B 200
Nonconformities occur when
sedimentary rocks are deposited
on top of uplifted and eroded
metamorphic or igneous rocks.
B 200
True
B 200
Index fossils are the remains of
species that existed on Earth for
relatively short periods of time.
B 300
True
B 300
A geologist who needed to correlate
two rock formations in different
areas could match exposed rock
layers.
B 400
True
B 400
An unconformity between two
sedimentary layers is classified
as a disconformity.
B 500
True
B 500
With ____ dating, a rock's exact age can be
determined, whereas with ____ dating, a
rock's age is compared to the ages of other
rocks.
a. absolute, relative
b. relative, absolute
c. true, absolute
d. relative, approximate
C 100
With ____ dating, a rock's exact age can be
determined, whereas with ____ dating, a
rock's age is compared to the ages of other
rocks.
a. absolute, relative
C 100
The oldest rock layer in an
undisturbed rock sequence occurs
____.
a. at the bottom of the sequence
b. below the sedimentary rock layer
c. below the unconformity
d. at the top of the sequence
C 200
The oldest rock layer in an
undisturbed rock sequence occurs
____.
a. at the bottom of the sequence
C 200
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C 300
What would change in the following picture to represent an
isotope of the element chlorine?
a. Element - chlorine becomes argon after turning into an isotope
b. Atomic Number - the number of protons increases which makes 17
become 18
c. State of Matter - chlorine would become a liquid after turning into an
isotope
d. Atomic Mass - adding neutrons to protons increases the atomic mass
C 300
What would change in the following picture to represent an
isotope of the element chlorine?
a. Element - chlorine becomes argon after turning into an isotope
b. Atomic Number - the number of protons increases which makes 17
become 18
c. State of Matter - chlorine would become a liquid after turning into an
isotope
d. Atomic Mass - adding neutrons to protons increases the atomic mass
C 300
What classification of unconformity
occurs when sedimentary rock overlies
igneous rock?
a. disconformity
b. nonconformity
c. angular unconformity
d. conformity
C 400
What classification of unconformity
occurs when sedimentary rock overlies
igneous rock?
a. disconformity
b. nonconformity
C 400
Determining the order of events and the
relative age of rocks by examining the
position of rocks in a sequence is called
____.
a. absolute dating
b. radiometric dating
c. relative dating
d. radiocarbon dating
C 500
Determining the order of events and the
relative age of rocks by examining the
position of rocks in a sequence is called
____.
a. absolute dating
b. radiometric dating
c. relative dating
C 500
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D 100
An example of a fossil with
altered hard parts includes ____.
a. a mummified human body
b. a gastrolith
c. a saber-toothed cat in tar
d. petrified wood
D 100
An example of a fossil with
altered hard parts includes ____.
a. a mummified human body
b. a gastrolith
c. a saber-toothed cat in tar
d. petrified wood
D 100
What is the hardened tree sap that
fossil insects are preserved in?
a. trace fossils
b. gastroliths
c. coprolites
d. amber
D 200
What is the hardened tree sap that
fossil insects are preserved in?
a. trace fossils
b. gastroliths
c. coprolites
d. amber
D 200
____ dating uses the properties of
atoms in rocks and other objects to find
their ages.
a. Comparative
b. Absolute
c. Approximate
d. Relative
D 300
____ dating uses the properties of
atoms in rocks and other objects to find
their ages.
a. Comparative
b. Absolute
D 300
Radiocarbon dating can be used to
determine the age of what type of
materials?
a. igneous rock
b. living organisms
c. organic materials
d. lava flows
D 400
Radiocarbon dating can be used to
determine the age of what type of
materials?
a. igneous rock
b. living organisms
c. organic materials
D 400
What characteristic of radioactive
decay makes it useful for determining
the absolute age of samples?
a. occurs at a constant rate
b. changes based on temperature
c. speeds up under high pressure
d. slows down in very dense samples
D 500
What characteristic of radioactive
decay makes it useful for determining
the absolute age of samples?
a. occurs at a constant rate
D 500
Fossil insects can be found
imbedded in _______________,
the hardened sap of prehistoric
trees.
E 100
amber
E 100
The principle of ______________
states that, in an undisturbed
sequence, the oldest rocks are at
the bottom of the sequence and
successive layers are younger than
those below them.
E 200
Superposition
E 200
A(n) ____________________
forms when the hollowed-out
impression of a fossil organism
becomes filled with minerals or
sediment.
E 300
cast
E 300
When the original parts of an
organism in a sedimentary rock are
weathered and eroded, a hollowedout impression called a(n)
____________________ forms.
E 400
mold
E 400
The gap in the rock record that
occurs between folded or uplifted
rock layers and a sedimentary rock
layer on top of them is called a(n)
_________________________.
E 500
angular unconformity
E 500
_____________ is the time it takes
for half of the atoms in an isotope to
decay
F 100
Half-life
F 100
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F 200
_____________states that
Earth processes today are
similar to those that took
place in the past
F 200
Uniformitarianism
F 200
A fossil copy of an organism made
when a mold of the organism is
filled with sediment or mineral
deposits is a ___________.
F 300
cast
F 300
____________________ is the process of
calculating the absolute age of a rock by
measuring the amounts of parent and
daughter materials in a rock and by
knowing the half-life of the parent.
F 400
Radiometric dating
F 400
A process that uses the properties
of atoms in rocks and other
objects to find their ages is
__________________.
F 500
radioactive decay
F 500
The Final Jeopardy Category is:
Radioactive Decay
Please record your wager.
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After 28 billion years, what percentage of
an original sample of Thorium-232 will
remain undecayed?
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25%
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