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Earth Sci Ch 30 Vocab
Test Description: Geologic time vocabulary
Instructions: Answer all questions to get your test result.
1) An exposed area of the oldest continental rock, or craton, is called
A
a shield
B
a volcano
C
graptolite
D
an eon
2) What is the name of a sea scorpion that lived in the Silurian period?
A
eurypterid
B
dinosaur
C
ammonites
D
crinoid
3) Mats of cyanobacteria that formed domes in Precambrian time are called
A
graptolites
B
trilobites
C
foraminifera
D
stromatolites
4) A crablike invertebrate that is the most common fossil of the Cambrian is called
A
dinosaur
B
a trilobite
C
an eurypterid
D
hominid
5) A modern human or a recent human like ancestor is called
A
a foraminifera
B
crinoid
C
an ammonite
D
a hominid
6) The longest segment of geologic time is
A
an era
B
a period
C
an epoch
D
an eon
7) Main divisions of an eon are divided into
A
eras
B
epochs
C
period
D
hours
8) Eras are divided into
A
eons
B
epochs
C
days
D
periods
9) Ancient plant-looking creatures related to seastars are called
A
eurypterids
B
trilobites
C
crinoids
D
foraminifera
10) Ancient tiny animals that lived in oceans & are good index fossils are
A
crinoids
B
graptolites
C
trilobites
D
eurypterids
*select an answer for all questions
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