Earth's History Lab Quiz

What is geologic time scale?

• system we use to measure and describe the history of Earth.

• it measures how long Earth has existed

• describes how Earth developed and recognizes major events that have occurred on Earth

• All of the above

Largest time unit that is broken down into smaller time units called eras.

• epoch

• period

• era

• eon

An era is broken down into smaller time units called

• eons

• periods

• supereons

• epochs

What is the correct order of the periods from oldest to youngest?

• Phanerozoic, Proterozoic, Archean, Hadean

• Proterozoic, Archean, Hadean, Phanerozoic

• Hadean, Archean, Proterozoic, Phanerozoic

• Archean, Hadean, Proterozoic, Phaerozoic

The oldest Eon is

• Hadean

• Archean

• Proterozoic

• Phanerozoic

During the Hadean period Earth was (select all that apply)

• uninhabitable (not able to support life)

• hot and covered in molten rock

• covered in ice

• cool and boasted of plant life

Cynobacteria or blue-green algae.....(select all that make the statement true)

• are very important because without them multicellular organisms would have never appeared on Earth.

• introduced oxygen into earth's atmosphere as well as in the Earth's oceans

• are photosynthetic and emerged on Earth 2.5 billion years ago

• caused the last mass extinction 1 million years ago

• influenced the first mass extinction, killing 98% of marine life

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-4

The early (oldest) eons are defined by

• the development of physical features of Earth (land, air, water)

• the emergence of specific life forms

• mass extinctions

• all of the above

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The Phanerozoic Eon and its eras and periods are defined by

• physical features of Earth

• emergence of specific life forms

• mass extinctions

• all of the above

What determines the number and length of time frame (eons, eras, periods) in Earth's History

• the physical features of Earth define the early eons

• emergence of specific life forms

• mass extinctions

• all of the above