Major Events in Earth's History

Which of these conditions would MOST likely be shown in the fossil record as a reason for mass extinctions?

• increased competition for resources

• falling sea levels and global cooling

• organisms with beneficial traits

• increased solar activity

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NGSS.MS-LS4-1

What is mass extinction?

• Mass extinction is caused by excessive population growth of species.

• Mass extinction is an event in which a significant proportion of Earth's species are destroyed within a relatively short period of time.

• Mass extinction is a gradual process that occurs over millions of years.

• Mass extinction only affects a small number of species.

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NGSS.MS-LS4-1

Which event occurred in the Cenozoic era?

• first mammals

• spread of mammals

• first flowering plants

• spread of ferns and conifers

When entire species of living things die off at the same time.

• mass extinction

• extinction

• factors

• floods

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NGSS.MS-LS4-1

Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What is most likely indicated by these imprint fossils?

• Mountain river clams evolved from ocean clams.

• Ocean clams evolved from mountain river clams.

• These mountains once had a more rainy climate.

• These mountains were once under the ocean.

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Used to determine whether an object is older or younger than other objects

• Superposition

• Relative Dating

• Fossil

• Unconformity

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NGSS.MS-ESS1-4

Which of the following is in the correct order?

• Cambrian explosion,Most complex life forms evolved, Single celled organisms appeared,Oceans formed

• Cambrian explosion, Oceans formed, Most complex life forms evolved, Single celled organisms appeared

• Single celled organisms appeared, Cambrian explosion, Oceans formed, Most complex life forms evolved

• Oceans formed, Single celled organisms appeared, Cambrian explosion, Most complex life forms evolve

Tags

NGSS.MS-ESS1-4

Eras of the geologic time scale are
divided into ______.

• periods

• ages

• units

• epochs

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NGSS.MS-ESS1-4

An event in time when large amounts of animals and plants die off

• geologic time

• precambrian

• period

• mass extinction

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NGSS.MS-LS4-1

The Geologic Time Scale is a record of what?

• old geologists

• sweet geology music

• the known history of rocks and fossils

• a list of every living thing ever

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NGSS.MS-ESS1-4