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Earth's Biological History 8th Grade (1)
Test Description: Review of concepts of South Carolina 8th Grade Standards for Earth's Biological History.
Instructions: Answer all questions to get your test result.
1) This is the longest unit of geologic time
A
Eon
B
Epoch
C
Era
D
Period
2) This is the process that explains the survival of the fittest and shows how species change over time
A
Adaptation
B
Population
C
Natural Selection
D
Variation
3) These form when sediments bury an organism and change them to rock, the organism decays leaving a cavity behind.
A
Mold Fossil
B
Cast Fossil
C
Petrified/Permineralized Fossil
D
Trace Fossil
4) What is most likely theorized to have ended the Mesozoic Era
A
Volcanic Eruptions followed by Climate Change
B
Habitat Destruction
C
Impact Event followed by Climate Change
D
Pollution
5) What are eras broken down in to?
A
Eras
B
Periods
C
Epochs
D
Eons
6) This is the geologic time span dominated by Marine life, shallow seas, early land plants and the first reptiles
A
Cenozoic Era
B
Precambrian Eon
C
Paleozoic Era
D
Mesozoic Era
7) These are fossils used to help determine the relative age of rocks and other fossils. They lived a short time
A
Trace Fossil
B
Cast Fossil
C
Mold Fossil
D
Index Fossil
8) These are an example of an index fossil that lived during the Paleozoic Era
A
T-rex
B
Mammoths
C
Jelly Fish
D
Trilobites
9) Which of the following would be considered a natural extinction factor?
A
Habitat Destruction
B
Pollution
C
Overharvesting
D
Volcanic Activity
10) These are differences in a population that can lead to natural selection
A
Organisms
B
Variation
C
Adaptation
D
Species
11) These form when minerals soak into the buried remains changing them into rock
A
Trace Fossil
B
Mold Fossil
C
Petrified/Permineralized Fossil
D
Cast Fossil
12) Ice Ages occurred during the geologic time period causing it to be relatively cooler than other time spans.
A
Paleozoic Era
B
Precambrian Era
C
Mesozoic Era
D
Cenozoic Era
13) This is the smallest division of geologic time
A
Epochs
B
Periods
C
Eras
D
Eons
14) This was the earliest time of Earth's History which had little to no life.
A
Precambrian Eon
B
Mesozoic Era
C
Cenozoic Era
D
Paleozoic Era
15) What is the period in which we currently live in called?
A
Cambrian Period
B
Jurrasic Period
C
Quarternary Period
D
Tertiary Period
16) This the geologic time span in which mammals were dominant, flowering plants are dominant and humans emerge
A
Paleozoic Era
B
Cenozoic Era
C
Precambrian Eon
D
Mesozoic Era
17) What states that each rock layer is older than the one above it?
A
Law of Gravity
B
Absolute age
C
Relative Age
D
Law of Superposition
18) Which of the following is an example of a man-made extinction factor?
A
Volcanic Activity
B
Impact Events
C
Climate Change
D
Cutting down the rain forest
19) Any trait or behavior that helps an organism survive and reproduce
A
Variation
B
Population
C
Natural Selection
D
Adaptation
20) These form when mud or sand hardens to stone where a footprint, trail, or burrow was left behind
A
Cast Fossil
B
Mold Fossil
C
Trace Fossil
D
Carbonized Fossil
*select an answer for all questions
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