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WorksheetsCh 13. Earth's History
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
VR: A ...... is a trace or remains of an organism preserved in Earth's crust.
a)
FOSSIL
b)
MOLD
2.
VR: A fossil ....... is a rock cavity in the shape of an organism.
a)
FOSSIL
b)
MOLD
3.
VR: A fossil ....... is a model of organism.
a)
AMBER
b)
CAST
4.
VR: ......... means the total amount of time since Earth formed.
a)
GEOLOGIC TIME
b)
CENOZOIC ERA
5.
VR: Earth formed about 4.6 .......... years ago.
a)
TRILOBITE
b)
BILLION
6.
VR: Scientists do not know for sure why the ........ died out.
a)
TRILOBITE
b)
DINOSAURS
7.
VR: The ....... is also called the Age of Mammals.
a)
CENOZOIC ERA
b)
GEOLOGIC TIME
8.
VR: ........... occurs when minerals replace organic matter.
a)
PETRIFICATION
b)
MOLD
9.
VR: Insects are sometimes preserved in hardened tree sap called ....... .
a)
AMBER
b)
DINOSAURS
10.
VR: The .......... was an animal that lived million of years ago.
a)
DINOSAURS
b)
TRILOBITE
11.
CR: The geologic time scale divides Earth's history into four ......... .
a)
EPOCHS
b)
ERAS
c)
PERIODS
12.
CR: Scientists study ......... to learn about the history of the life on Earth.
a)
FOSSILS
b)
REPTILES
c)
ERAS
13.
CR: During the ........ Era, dinosaurs and other reptiles were the major form of life on Earth.
a)
MESOZOIC
b)
PALEOZOIC
c)
PRECAMBRIAN
14.
CR: The .......... Era is known as the age of Mammals.
a)
PRECAMBRIAN
b)
MESOZOIC
c)
PALEOZOIC
15.
CR: The .......... Era was a time of great development of ocean life.
a)
PRECAMBRIAN
b)
MESOZOIC
c)
PALEOZOIC
16.
CR: During the Cenozoic Era, the Great Lakes basins were carved out by .......... .
a)
RIVERS
b)
ICE
c)
WIND
17.
CR: We live in the ......... Era.
a)
PALEOZOIC
b)
MESOZOIC
c)
CENOZOIC
18.
CR: The ........... parts of an organism usually become fossils.
a)
HARD
b)
SOFT
c)
MOLDED
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