Geologic Time Scale Chapter 12

Multiple Choice

Thick stacks of rock with no fossils provide ______ information for subdividing geologic time.

• ample

• little

• detailed

• extensive

Multiple Choice

What can sometimes be used to distinguish layers of rock?

• Color

• Fossils

• Formation during a single year or season

• Thickness

Multiple Choice

What is the purpose of the geologic time scale?

• To measure short periods of time

• To record Earth's history

• To predict future events

• To study weather patterns

Multiple Choice

Which of the following is NOT a feature of the geologic time scale?

• Divides time into bigger blocks

• Records changes in life forms

• Predicts future climate

• Begins 4.6 billion years ago.

Multiple Choice

What does the geologic time scale divide time into?

• Days

• Months

• Years

• Bigger blocks

Multiple Choice

The geologic time scale goes from Earth's formation to the present. True or False?

• True

• False

Multiple Choice

Fill in the blank: The geologic time scale is important because it shows when ______ first appeared on Earth.

• Water

• Life

• Mountains

• Oceans

Multiple Choice

Unlike divisions of time such as days or minutes, the divisions of the geologic time scale have no ______.

• Fixed lengths

• Names

• Importance

• Relevance

Multiple Choice

The Cambrian Period is the first period after which time?

• Mesozoic

• Precambrian

• Paleozoic

• Cenozoic

Multiple Choice

Each era is subdivided into a number of ______.

• eons

• periods

• epochs

• centuries

Multiple Choice

What era do we currently live in?

• Mesozoic

• Paleozoic

• Cenozoic

• Precambrian

Multiple Choice

The present day Earth is in the _______ period.

• Jurassic

• Quaternary

• Triassic

• Cambrian

Multiple Choice

During which period did the 'Big, Big Extinction' occur?

• Cretaceous

• Jurassic

• Triassic

• Permian

Multiple Choice

Which period is directly before the Jurassic period?

• Triassic

• Cretaceous

• Permian

• Devonian

Multiple Choice

Fill in the blank: The Archean eon began approximately _______ billion years ago.

• 2.5

• 3.5

• 4.6

Multiple Choice

Fill in the blank: The Cretaceous period ended approximately _______ million years ago.

• 65.5

• 145.5

• 199.6

Multiple Choice

Which era is the Pliocene epoch part of?

• Cenozoic

• Mesozoic

• Paleozoic

Multiple Choice

Which era is known as the 'Age of Man'?

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

• Precambrian Time

Multiple Choice

The first flowering plants appeared during which period?

• Jurassic Period

• Cretaceous Period

• Triassic Period

• Permian Period

Multiple Choice

Which period is marked by the extinction event at 248 million years ago?

• Triassic

• Permian

• Jurassic

• Devonian

Multiple Choice

Fill in the blank: The first amphibians appeared during the _______ Period.

• Devonian

• Silurian

• Ordovician

• Carboniferous

Multiple Choice

During which period did Pangaea break apart?

• Triassic

• Jurassic

• Cretaceous

• Permian

Multiple Choice

Fill in the blank: The first life appeared during the _______ Eon.

• A) Archean

• B) Proterozoic

• C) Hadean

• D) Phanerozoic

Multiple Choice

What is the Precambrian Time known for?

• The beginning of human civilization

• The most of Earth's history

• The extinction of dinosaurs

• The formation of the solar system.

Multiple Choice

How long ago did the Precambrian Time begin?

• 4.6 billion years ago

• 2 billion years ago

• 500 million years ago

• 10 billion years ago

Multiple Choice

What significant development occurred late in the Precambrian Time?

• Formation of oceans

• Development of multicellular organisms

• Arrival of dinosaurs

• Human evolution.

Multiple Choice

What was a major event during the Precambrian Time?

• Extinction of dinosaurs

• Development of multicellular organisms

• Formation of the moon

• Ice Age.

Multiple Choice

At the beginning of the Paleozoic era, all life lived in the ______.

• forests

• oceans

• deserts

• mountains

Multiple Choice

Early invertebrates developed during the Paleozoic era. True or False?

• True

• False

Multiple Choice

Which of the following was NOT a characteristic of the early Paleozoic era?

• A) Dominance of reptiles

• B) Development of early invertebrates

• C) Presence of cone-bearing plants

• D) All life lived in deserts.

Multiple Choice

During the Mesozoic Era, which group of animals was dominant?

• Mammals

• Birds

• Reptiles

• Fish

Multiple Choice

Which of the following statements is true about the Mesozoic Era?

• Reptiles were not present

• Dinosaurs were dominant

• Only mammals existed

• Birds were the only life form.

Multiple Choice

Which of the following did not exist during the Mesozoic Era?

• Dinosaurs

• First mammals

• Birds

• Modern humans

Multiple Choice

Fill in the blank: Reptiles were ________ during the Mesozoic Era.

• Rare

• Dominant

• Absent

• Minor

Multiple Choice

New mammals and birds appeared while others became ______ during the Cenozoic Era.

• extinct

• abundant

• colorful

Multiple Choice

The diversity of life forms ______ during the Cenozoic Era.

• decreased

• increased

• remained the same

Multiple Choice

The Cenozoic Era is characterized by the appearance of new ______.

• reptiles

• mammals

• fish

Multiple Choice

During the Cenozoic Era, new mammals and birds appeared while others became ______.

• extinct

• abundant

• colorful