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Geologic Timeline Project Test

Total questions: 74

Worksheet time: 2hrs 28mins

Name
Class
Date
1.

Paleontologists think Earth is approximately how many years old?

a)

2.5 billion

b)

4.6 billion

c)

3.0 billion

d)

1.2 billion

2.

In which era do we currently live?

a)

Paleozoic

b)

Mesozoic

c)

Cenozoic

d)

Precambrian

3.

Which of the following is a period of the Mesozoic Era?

a)

Precambrian

b)

Jurassic

c)

Neogene

d)

Ordovician

4.

Which is NOT an eon?

a)

Archean

b)

Proterozoic

c)

Hadean

d)

Paleocene

5.

Which division on the geologic time scale is the shortest?

a)

Eon

b)

Epoch

c)

Era

d)

Period

6.

The timespan that lasted the longest was the:

a)

Mesozoic

b)

Cenozoic

c)

Paleozoic

d)

Precambrian

7.

The era that ended with the largest extinction we know of is the:

a)

Mesozoic

b)

Cenozoic

c)

Paleozoic

d)

Precambrian

8.

The “Age of the Reptiles” was the:

(a)  

9.

Of the following, which is the youngest period of geologic time?

a)

Paleogene

b)

Archean

c)

Devonian

d)

Quaternary

10.

Corals appeared during the _____ Era.

a)

Mesozoic

b)

Cenozoic

c)

Paleozoic

d)

Cretaceous

11.

What type of animal lived only during the Mesozoic Era?

a)

Mammals

b)

Birds & Mammals

c)

Dinosaurs

d)

All of them

12.

The first fossil appears from the _____ Eon.

a)

Proterozoic

b)

Archean

c)

Hadean

d)

Phanerozoic

13.

The dinosaurs became extinct about how many years ago?

a)

4.3 billion

b)

3.0 billion

c)

65 million

d)

2 million

14.

Which mass extinction wiped out approximately 96% of Earth's species?

a)

Permian mass extinction

b)

End Devonian extinction

c)

Ordovician-Silurian extinction

d)

Triassic-Jurassic extinction

15.

Which mass extinction event wiped out the dinosaurs?

a)

End Devonian extinction

b)

Permian mass extinction

c)

K-Pg extinction

16.

The Cambrian Explosion refers to:

a)

Mass extinction event

b)

Rapid appearance of most modern animal groups

c)

Formation of the first oceans

d)

Beginning of Earth's atmosphere

17.

The Permian mass extinction is sometimes called:

a)

The Great Dying

b)

The Cambrian Event

c)

The Ice Age

d)

The Pangaea Breakup

18.

Which supercontinent began to break apart around 170 million years ago?

a)

Rodinia

b)

Pannotia

c)

Pangaea

d)

Columbia

19.

The first primates appeared approximately:

a)

55 million years ago

b)

200 million years ago

c)

360 million years ago

d)

420 million years ago

20.

What organism is responsible for producing oxygen through photosynthesis?

a)

Eukaryotes

b)

Cyanobacteria

c)

Trilobites

d)

Amphibians

21.

The Hadean Eon was characterized by:

a)

The first fossils

b)

Formation of Earth and its moon

c)

Cambrian Explosion

d)

First primates

22.

Flowering plants first appeared during which era?

a)

Paleozoic

b)

Mesozoic

c)

Cenozoic

d)

Hadean

23.

The Great Oxygenation Event took place around:

a)

1.8 billion years ago

b)

2.4 billion years ago

c)

3.1 billion years ago

d)

4.4 billion years ago

24.

During which period did vast forests dominate the landscape, leading to coal formation?

a)

Carboniferous

b)

Devonian

c)

Cambrian

d)

Silurian

25.

The earliest forms of life on Earth were:

a)

Multicellular marine organisms

b)

Bacterial and archaean life

c)

Amphibians

d)

Reptiles

26.

The first multicellular organisms appeared around:

a)

2.1 billion years ago

b)

3.6 billion years ago

c)

1.25 billion years ago

d)

500 million years ago

27.

When did modern humans evolve?

a)

200,000 years ago

b)

55 million years ago

c)

150,000 years ago

d)

300,000 years ago

28.

What event is associated with the End Devonian extinction?

a)

Dinosaurs’ extinction

b)

Wiping out of trilobites

c)

Extinction of half of all species

d)

Emergence of mammals

29.

Which era is known for the largest diversification of life?

a)

Paleozoic

b)

Mesozoic

c)

Precambrian

d)

Cenozoic

30.

Oxygen first appeared in Earth’s atmosphere due to:

a)

Cyanobacteria photosynthesis

b)

Volcanic eruptions

c)

Ocean formation

d)

Ice Age events

31.

The Triassic-Jurassic mass extinction wiped out about:

a)

85% of sea life

b)

Half of all species on Earth

c)

96% of species

d)

Only the dinosaurs

32.

The formation of the Earth occurred approximately how many years ago?

a)

4.57 billion

b)

3.5 billion

c)

2.1 billion

d)

1.8 billion

33.

During the Archean Eon, the atmosphere was mainly composed of:

a)

Oxygen and carbon dioxide

b)

Methane and nitrogen

c)

Helium and hydrogen

d)

Nitrogen and sulfur

34.

The formation of soil was accelerated by the evolution of:

a)

Fish

b)

Vertebrates

c)

Root-like structures on fungi

d)

Multicellular organisms

35.

The ozone layer became thick enough to shield organisms from UV radiation during:

a)

600 million years ago

b)

1 billion years ago

c)

2 billion years ago

d)

400 million years ago

36.

Which supercontinent formed around 900 million years ago?

a)

Pannotia

b)

Rodinia

c)

Pangaea

37.

The supercontinent Pangaea began to break apart during which period?

a)

Triassic

b)

Jurassic

c)

Cretaceous

d)

Carboniferous

38.

What event occurred during the Cambrian Explosion?

a)

Formation of Earth’s atmosphere

b)

Rapid appearance of modern animal groups

c)

Extinction of early marine life

d)

Development of land plants

39.

What era is known as the "Age of Mammals"?

a)

Paleozoic

b)

Mesozoic

c)

Cenozoic

d)

Precambrian

40.

The Proterozoic Eon is known for:

a)

The appearance of the first cells with nuclei

b)

The extinction of the dinosaurs

c)

The Cambrian Explosion

d)

The Ice Ages

41.

Which period directly follows the Devonian Period?

a)

Silurian

b)

Carboniferous

c)

Ordovician

d)

Triassic

42.

Which is the earliest known supercontinent?

a)

Rodinia

b)

Pannotia

c)

Columbia

d)

Vaalbara

43.

The Huronian Glaciation is known as a:

a)

Period of rapid warming

b)

Time of volcanic eruptions

c)

"Snowball Earth" period

d)

Mass extinction

44.

The atmosphere during the Archean Eon was mostly:

a)

Oxygen and carbon dioxide

b)

Methane and nitrogen

c)

Helium and hydrogen

d)

Argon and sulfur

45.

Banded iron deposits in Earth's oceans are primarily formed by:

a)

Oxygen reacting with iron

b)

Carbon dioxide freezing in the oceans

c)

Lava flows hardening under water

d)

Microbial activity

46.

The first four-legged vertebrates emerged on land during which period?

a)

Carboniferous

b)

Devonian

c)

Ordovician

d)

Silurian

47.

The Triassic Period is best known for the:

a)

Rise of early dinosaurs

b)

Extinction of trilobites

c)

First appearance of reptiles

d)

Formation of Pangaea

48.

The appearance of the first eukaryotic cells occurred during:

a)

4 billion years ago

b)

3 billion years ago

c)

1.8 billion years ago

d)

800 million years ago

49.

The first oceans are believed to have formed:

a)

3.8 billion years ago

b)

4.5 billion years ago

c)

2.5 billion years ago

d)

1 billion years ago

50.

Which mass extinction event is referred to as "The Great Dying"?

a)

Ordovician-Silurian

b)

Permian

c)

Cretaceous-Paleogene

d)

Triassic-Jurassic

51.

When did the Earth form?

a)

8.9 billion years ago

b)

4.5 billion years ago

c)

3.8 billion years ago

d)

2.5 billion years ago

52.

What event marks the end of the Cretaceous Period?

a)

The rise of mammals

b)

The K-Pg extinction

c)

The Cambrian Explosion

d)

The formation of Rodinia

53.

Arthropods, like spiders and scorpions, evolved onto land during the:

a)

Cambrian Period

b)

Ordovician Period

c)

Silurian Period

d)

Devonian Period

54.

The first vertebrates appeared during the:

a)

Cambrian Period

b)

Devonian Period

c)

Carboniferous Period

d)

Triassic Period

55.

What event is associated with the Ordovician-Silurian mass extinction?

a)

Extinction of 96% of all species

b)

Extinction of dinosaurs

c)

Extinction of 85% of sea life

d)

Extinction of trilobites

56.

The rapid diversification of marine life during the Paleozoic Era is known as the:

a)

Cambrian Explosion

b)

K-Pg Extinction

c)

Ice Age

d)

Great Dying

57.

The ozone layer’s development allowed for:

a)

The formation of Pangaea

b)

The colonization of land by life

c)

The extinction of amphibians

d)

The end of the Huronian Glaciation

58.

The first hominid ancestors of humans emerged around:

a)

4.4 million years ago

b)

100,000 years ago

59.

The Cenozoic Era is characterized by:

a)

The dominance of mammals

b)

The emergence of amphibians

c)

The reign of dinosaurs

d)

The formation of early oceans

60.

What major event happened 200 million years ago during the Triassic-Jurassic extinction?

a)

The rise of reptiles

b)

The extinction of half of all species

c)

The first primates appeared

d)

The breakup of Pangaea

61.

Multicellular marine organisms became common during:

a)

The Cambrian Period

b)

The Silurian Period

c)

The Devonian Period

d)

The Carboniferous Period

62.

When did modern humans evolve?

a)

1 million years ago

b)

200,000 years ago

c)

500,000 years ago

d)

2 million years ago

63.

Which event resulted in the extinction of most trilobites?

a)

The End Devonian extinction

b)

The Ordovician-Silurian extinction

c)

The Permian extinction

d)

The K-Pg extinction

64.

The Carboniferous Period is best known for:

a)

Its vast forests that later formed coal

b)

The extinction of the dinosaurs

c)

The formation of Pangaea

d)

The appearance of the first flowering plants

65.

The Earth’s first crust formed as a thin black layer of:

a)

Limestone

b)

Basalt

c)

Granite

d)

Quartz

66.

Which supercontinent formed approximately 1.1 billion years ago?

a)

Pangaea

b)

Rodinia

c)

Columbia

d)

Gondwana

67.

What atmospheric event occurred 2.4 billion years ago, leading to the first widespread appearance of oxygen?

a)

The Cambrian Explosion

b)

The Great Oxygenation Event

c)

The Late Heavy Bombardment

d)

The Permian Extinction

68.

Early cyanobacteria were critical for producing:

a)

Methane

b)

Carbon dioxide

c)

Oxygen

d)

Nitrogen

69.

What event began around 3.9 billion years ago and caused significant changes to Earth's surface?

a)

The Cambrian Explosion

b)

The Permian Extinction

c)

The Late Heavy Bombardment

d)

The formation of oceans

70.

The first organisms to leave the ocean and live on land appeared around:

a)

2 billion years ago

b)

3.5 billion years ago

c)

4.6 billion years ago

d)

1 billion years ago

71.

Which of the following marked the end of the Precambrian?

a)

The formation of Pangaea

b)

The extinction of dinosaurs

c)

The appearance of hard-shelled animals

d)

The rise of mammals

72.

The Hadean Eon is primarily known for:

a)

The formation of Earth and its moon

b)

The rise of oxygen

c)

The Cambrian Explosion

d)

The Great Oxygenation Event

73.

The first multicellular life forms appeared approximately:

a)

600 million years ago

b)

1.2 billion years ago

c)

2 billion years ago

d)

500 million years ago

74.

Which event resulted in the formation of the first continents?

a)

The Great Oxygenation Event

b)

Accretion of material from the solar nebula

c)

Formation of the ozone layer

d)

The Late Heavy Bombardment

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