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Geologic Time, Extinction, & Adapatations

Total questions: 37

Worksheet time: 42mins

Name
Class
Date
1.

The second broadest category of geologic time is______________?. The Cenozoic is one of them.

a)

era

b)

eon

c)

epoch

d)

period

2.

When did the first birds appear?

a)

Cambrian

b)

Permian

c)

Cretaceous & Triassic

d)

Mesozoic and Jurassic

3.

The period of geologic time when the biodiversity of life on the planet increased dramatically was

a)

Jurassic

b)

Triassic

c)

Permian

d)

Cambrian

4.

The epoch we are currently living in is the

a)

Holocene

b)

Quaternary

c)

Cambrian

d)

Pleistocene

5.

What are the names of ALL parts of the geologic time scale in correct order from broadest to narrowest?

a)

era, period, eon

b)

eon, era, period, epoch

c)

era, eon, epoch, period

d)

eon, era, epoch, period

6.

The Cenozoic is a

a)

eon

b)

era

c)

period

d)

epoch

7.

The Phanerozoic is a

a)

eon

b)

era

c)

period

d)

epoch

8.

The period when trilobites and eurypterids appeared was the

a)

Hadean

b)

Cambrian

c)

Holocene

d)

Jurassic

9.

When large land reptiles first appeared.

a)

Jurassic

b)

Permian

c)

Cambrian

d)

Holocene

10.

Known as the age of reptiles

a)

Mesozoic

b)

Cenozoic

c)

Phanerozoic

d)

Cambrian

11.

The time when mammals became dominant

a)

Jurassic

b)

Cenozoic

c)

Cambrian

d)

Hadean

12.
The Geologic Time Scale is a record of what?
a)
old geologists
b)
sweet geology music
c)
the known history of rocks and fossils
d)
a list of every living thing ever
13.
Paleozoic, Mesozoic & Cenozoic are all
a)
Epochs
b)
Eras
c)
Periods
d)
Eons
14.
The disappearance of a species.
a)
Evolution
b)
Extinction
c)
Migration
d)
Mutation
15.
_______________ is the long span of time that begins geologic time.
a)
Precambrian Time
b)
Cenozoic Time
16.
A unit of geologic time that subdivides eras
a)
period
b)
time span
17.
Scientists chose where units of geologic time began on major changes in ______________ at certain times.
a)
life forms
b)
events
18.
Scientists divided the time between Precambrian Time and the present into three units of time, or eras.
a)
True
b)
False
19.
Eras are subdivided into units of geologic time called periods.
a)
True
b)
False
20.
 The Quaternary period, where humans first appeared, is in the Mesozoic era.
a)
True
b)
False
21.
Humans appeared in the ____ Era.
a)
Cenozoic
b)
Paleozoic
c)
Mesozoic
d)
Devonian
22.
Geologic time is divided into units based on ____.
a)
geologic changes
b)
fossils and rocks
c)
types of life-forms living during certain periods
d)
all of these
23.

What is the eon, era, period, and epoch we are living in?

a)

phanerozoic, quaternary, holocene, and cenozoic

b)

phanerozoic, cenozoic, quaternary, and holocene

c)

quaternary, cenozoic, holocene, and phanerozoic

d)

quaternary, cenozoic, phanerozoic, and holocene

24.

Which of the following is the correct sequence of geologic time from smallest to largest unit?

a)

era, eon, period, and epoch

b)

epoch, eon, era, and period

c)

epoch, period, era, and eon

d)

era, eon, epoch, and period

25.

What was the earth like during PreCambrian time?

a)

tropical climate with warm shallow seas

b)

vegetation and tectonic movement

c)

cooler temperatures because of nuclear winter

d)

intense volcanic activity, very warm temperatures

26.

Select the best definition for adaptation:

a)

trait or characteristic that causes an organism to survive & reproduce

b)

survival of the fittest

c)

only the strong will survive

d)

evolution by means of natural selection

27.

What the two factors that cause extinctions

a)

man-made influences and natural disaster

b)

man-made influences and space

c)

natural disaster and space

d)

natural disaster and oil drilling

28.

Man made extinctions include all of the following except:

a)

global cooling

b)

deforestation

c)

over-harvesting

d)

pollution

29.

Salmon is in danger of being massively depleted during the months of June to September, this is an example of:

a)

over-harvesting

b)

climate change

c)

global warming

d)

pollution

30.
Anything that helps an animal survive in its environment.
a)
counter-shading
b)
mimicry
c)
adaptation
d)
camouflage
31.

According to most scientists, what is the ultimate cause of most mass extinctions?

a)

overhunting

b)

evolution of new species to replace old ones

c)

major change in environment

d)

asteroid impact

32.
Which of these describes a species that has become extinct?
a)
fewer members of the species are dying than being born
b)
more members of the species are dying than being born
c)
very few members of a species are alive
d)
all members of a species have died
33.
Which of the following is NOT a reason a species may become extinct?
a)
competition
b)
reproducing
c)
habitat loss
d)
overhunting
34.

When a plant or animal becomes extinct, it is gone _______.

a)

forever

b)

until next week

c)

for 5 years

d)

to sleep

35.
Humans are causing extiction in which ways?
a)
By over hunting animals for food or products.
b)
By destroying the natural habitat of species.
c)
By polluting the environments of the world.
d)
All of the above.
36.
What is a mass extinction?
a)
When all the species in a particular area on earth suddenly go extinct
b)
When multiple species from all over the earth suddenly go extinct 
c)
When one species goes extinct due to habitat changes
d)
When all life on earth is wiped out 
37.
What event marks the end of each geologic area?
a)
1 million years
b)
burst of new life forms
c)
mass extinction
d)
ice age

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