True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Fossils most
often form when a dead organism is buried in sediments.
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2.
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Carbon films
are formed when a thin film of carbon is left, forming a silhouette of the original
organism.
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3.
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Dinosaur
footprints are original remains.
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4.
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Radiocarbon
dating would be useful in dating the age of Earth.
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5.
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Absolute age
examines the position of rocks in a sequence.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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6.
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If the same
types of fossils are found in two separate rock layers, it's likely that the two rock layers
____. a. | formed at different
times | c. | formed under different
conditions | b. | are part of one continuous deposit | d. | none of the above | | | | |
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7.
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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 | c. | relative
dating | b. | radiometric dating | d. | radiocarbon dating | | | | |
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8.
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Gaps in rock
layers are called ____. a. | unconformities | c. | half-lives | b. | index fossils | d. | none of the above | | | | |
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9.
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A limestone
bed containing fossils that are 550 million years old is ____ a bed of sandstone containing fossils
that are 400 million years old. a. | younger than | c. | older than | b. | the same age as | d. | not related to | | | | |
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10.
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In a series
of undisturbed rock layers where shale lies between sandstone below and limestone above, the
____. a. | limestone is
youngest | c. | sandstone is
youngest | b. | shale is youngest | d. | beds are all the same age | | | | |
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11.
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____ dating
uses the properties of atoms in rocks and other objects to find their ages. a. | Comparative | c. | Approximate | b. | Absolute | d. | Relative | | | | |
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12.
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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. | true, absolute | b. | relative,
absolute | d. | relative,
approximate | | | | |
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13.
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Geologic
time is divided into units based upon types of ____. a. | sedimentary
rocks | c. | organisms | b. | climatic changes | d. | igneous rocks | | | | |
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14.
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The longest
subdivision in geologic time is a(n) ____. a. | epoch | c. | century | b. | period | d. | eon | | | | |
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15.
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Changes in
the environment result in ____. a. | geologic eras | c. | plate tectonic changes | b. | physical changes in
species | d. | all of the
above | | | | |
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16.
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Which
trilobite characteristic did not change through time? a. | shape of
eyes | c. | number of body
segments | b. | 3-lobed body | d. | number of spines | | | | |
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17.
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Trilobites
are index fossils because they ____. a. | changed slowly through time | c. | exhibit specific characteristics | b. | lived over large areas
of the world | d. | all of the
above | | | | |
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18.
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Changes in
the trilobite exoskeleton can be attributed to ____. a. | changing
environments | c. | inter-species
mating | b. | competition for survival | d. | both a and b | | | | |
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19.
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The division
of Earth’s history into smaller units makes up the ____. a. | eras | c. | periods | b. | geologic time scale | d. | sequence of events | | | | |
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20.
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If a species
can adapt to a changing environment, or ____, its descendants will survive. a. | evolve | c. | stay the
same | b. | become
extinct | d. | none of the
above | | | | |
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