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Worksheets7th Grade Science --Chapter 9
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
Scientists created the first geologic column by determining the relative ages of sedimentary rock in
a)
Asia
b)
the area where life began
c)
Africa
d)
areas all over the world
2.
If the Cretaceous Period began about 146 Ma, this means it began
a)
146 billion years ago
b)
146 million years ago
c)
146 years ago
d)
146 thousand years ago
3.
Geologic time is divided into
a)
seven eons
b)
three eons
c)
two eons
d)
four eons
4.
Precambrian time consists of
a)
the first eon on Earth's history
b)
the last eon of Earth's history
c)
the first three eons of Earth's history.
d)
4 billion years between the first eon and the last eon.
5.
A geologic period is usually named for
a)
specific types of fossils
b)
the person who found the first fossils from the period
c)
the place where its characteristic fossils were first discovered
d)
the time in which the period occured
6.
The gradual development of new organisms from preexisting organisms is called
a)
natural selection
b)
mass extinction
c)
evolution
d)
environmental change
7.
Which of the following accurately characterizes Precambrian rock?
a)
It has been severely damaged
b)
It has not been damaged at all
c)
It contains lots of iron ore
d)
it has many fossils
8.
The division of geologic time that makes up about 88% of Earth's history is called
a)
the Paleozoic Era
b)
the Cambrian Period
c)
Precambrian time
d)
the Permian Period
9.
Scattered landmasses on Earth merger into a supercontinent during
a)
Precambrian time
b)
the Cambrian Period
c)
the Permian Period
d)
the Paleozoic Era
10.
The Devonian Period is also known as the
a)
Age of Mammals
b)
Age of Fishes
c)
Age of Reptiles
d)
Carboniferous Period
11.
The mass extinction at the end of the Permian Period led to
a)
fewer resources during the Mesozoic Era
b)
abundant new life-forms in the Mesozoic and Cenozoic Eras
c)
delayed evolution of new species in the Cenozoic Era
d)
little environmental change in the Mesozoic Era
12.
The two major groups of dinosaurs during the Jurassic Period were the saurischians and the
a)
pterosaurs
b)
ichthyosaurs
c)
ornithischians
d)
herbivores
13.
According to the impact hypothesis, dinosaurs became extinct when
a)
the continents underwent great movement
b)
a giant meteorite crashed into Earth
c)
volcanic activity increased
d)
Earth's climate became much warmer
14.
The Cenozoic Era is known as the
a)
Age of Reptiles
b)
Age of Fishes
c)
Age of Evolution
d)
Age of Mammals
15.
The Pleistocene Epoch was characterized by
a)
a mass extinction
b)
the repeated advance and retreat of ice sheets
c)
a warm, humid climate
d)
a rapidly warming climate
16.
The appearance of many new life-forms during the first period of the Paleozoic Era was probably aided by the development of
a)
humid swamps
b)
warm, shallow seas
c)
glaciers
d)
deserts and savannas
17.
The most common Precambrian fossils are
a)
marine worms
b)
trilobites
c)
stromatolites
d)
brachiopods
18.
The first period of the Mesozoic Era was called the
a)
Cretaceous Period
b)
Quaternary Period
c)
Tertiary Period
d)
Triassic Period
19.
An armored Cretaceous dinosaur was called the
a)
T-Rex
b)
ankylosaur
c)
ceratopsian
d)
hadrosaur
20.
What happened when temperatures decreased during the ice ages of the Cenozoic Era?
a)
Mass extinctions occurred
b)
Small reptiles died out
c)
New mammal species developed
d)
New dinosaur species evolved
21.
On a geologic column, the oldest rocks
a)
are on the bottom
b)
are on the top
c)
are in the middle
d)
contain fossils of modern-day animals
22.
Mountain rangers created during the Cenozoic Era include the
a)
Canadian Rockies
b)
Sierra Nevadas
c)
Himalayas
d)
Andes
23.
Scientists have mose accurately determined the absolute ages of rock layers by
a)
factoring rates of sediment deposition
b)
using geologic columns
c)
using radiometric dating methods
d)
determining rates of erosion
24.
Nearly half the Earth's valuable mineral deposits are found in rocks from
a)
Precambrian time
b)
the Mesozoic Era
c)
the Paleozoic Era
d)
The Cenozoic Era
25.
What can a scientist assume about a rock layer that matches a similar layer in a geologic column?
a)
The layers are from the same time
b)
The layers contain the same kind of rock
c)
The layers were found at about the same time
d)
The layers formed at about the same time
26.
Dinosaurs became extinct at the end of the
a)
Cretaceous Period
b)
Paleocene Epoch
c)
Jurassic Period
d)
Triassic Period
27.
The period during which land plants such as ferns and cone-bearing plants began to develop was called the
a)
Cambrian Period
b)
Devonian Period
c)
Carboniferous Period
d)
Permian Period
28.
Coal deposits found in Pennsylvania, Ohio and West Virginia represent fossilized remains of
a)
brachiopods from the Cambrian Period
b)
swamps and forests that existed during the Carboniferous Period
c)
dinosaurs from the Carboniferous Period
d)
marine organisms from the Triassic Period
29.
Dinosaurs first appeared during the
a)
Cretaceous Period
b)
Quaternary Period
c)
Triassic Period
d)
Jurassic Period
30.
A unit of geologic time into which an era is divided
a)
Period
b)
Geologic Time Scale
c)
Era
d)
Epoch
31.
A table that outline the development of Earth
a)
Geologic Time Scale
b)
Geologic Column
c)
Table of Contents
d)
Table of the World
32.
A unit of geologic time that includes two or more periods
a)
Era
b)
Epoch
c)
Time Scale
d)
None of the above
33.
An ordered arrangement of rock layers based on their ages
a)
Rock Scale
b)
Rock Layers
c)
Geologic Column
d)
None of the above
34.
A unit of geologic time into which a period is divided
a)
Era
b)
Epoch
c)
Ewok
d)
Columns
35.
A fossil that is used to date rocks
a)
invertebrate
b)
shield
c)
index fossil
d)
vertebrate
36.
a type of animal that thrived in the Cambrian Period
a)
invertebrate
b)
vertebrate
c)
dinosaurs
d)
birds
37.
The most common Precambrian fossil
a)
dinosaurs
b)
stromatolite
c)
neither
d)
both
38.
A large area of exposed Precambrian rocks
a)
shield
b)
rock layers
c)
slate
d)
limestone
39.
A type of animal that appeared during the Ordovician Period
a)
Invertebrate
b)
Vertebrate
c)
Mammals
d)
Dinosaurs
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