Geological Time and Mass Extinctions

What classifies a mass extinction?

• Only 5% of species go extinct.

• Massive flooding due to hurricanes.

• Happens in a relatively short period of time and is global

• There have never been any mass extinctions on Earth.

Tags

NGSS.HS-LS4-5

Which of the following is NOT an accepted criterion for a mass extinction event?

• The event must have occurred in a relatively short time frame.

• The extinction involves multiple lifeforms and is widespread.

• A significant part of life on Earth became extinct.

• The cause of the mass extinction must be obvious.

Tags

NGSS.MS-LS4-1

Which of the following events resulted in the extinction of 96% of species, the biggest mass extinction yet?

• Permian

• Ordovician

• Triassic

• Cretaceous

Tags

NGSS.MS-LS4-1

The Cretaceous extinction which causes the extinction of the dinosaurs, was most likely a result of what event?

• Volcanic eruptions

• Asteroid Impact

• Anoxic Oceans

• Methane release

Tags

NGSS.MS-LS4-1

Identify which cause HAS NOT lead to a mass extinction globally?

• Global Volcanic Activity

• Climate Change

• Hunting/Poaching

• Asteroid Collision

Tags

NGSS.HS-LS4-5

Changes in climate during which glaciers covered much of the Earth is also known as a(an)

• Extinction

• Mass Extinction

• Climate Change

• Ice Age

Tags

NGSS.MS-ESS2-1

The Geologic Time Scale is a record of what?

• old geologists

• a list of every living thing that has existed

• the known history of rocks and fossils

• geologic sounds of nature

Tags

NGSS.MS-ESS1-4

Paleozoic, Mesozoic and Cenozoic are all

• Epochs

• Eras

• Eons

• Periods

Tags

NGSS.MS-ESS1-4

What do scientists use to separate time periods?

• Group major evolutions that existed during that time.

• By counting the years that a fossil has been preserved.

• A time period occurs every 100 million years.

Tags

NGSS.MS-ESS1-4

The single land mass that existed 245 million years ago is named what?

• Fossilia

• Pangea

• Pteranadon

• Tectonicland

Tags

NGSS.MS-ESS2-3