Geologic Timescale

Which era ended with the K-T extinction, probably due to an asteroid?

• Paleozoic

• Phanerozoic

• Cenozoic

• Mesozoic

Tags

NGSS.MS-ESS3-2

The Permian Extinction or "Great Dying" ended the _____era with about 95% of life going extinct . This was the biggest mass extinction our planet has ever faced.

• Pre-Cambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Answer explanation

ended the age of fishes then the age of dinosaurs began!

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

The ______________ era covers 80%-88% of earth's history.

• Paleozoic

• Mesozoic

• Cenozoic

• Precambrian

Answer explanation

We highlighted this era orange in our calendar

What time Era do we live in?

• Mesozoic

• Cenozoic

• Paleozoic

• Pre-Cambrian

Tags

NGSS.MS-ESS1-4

In which "eon" were dinosaurs present? (not era or period)

• Phanerozoic

• Proterozoic

• Archean

• Hadean

Answer explanation

all major life was in the Phanerozoic Eon- we have focuses on Eras

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Known as the age of the mammals?

• Mesozoic Era

• Holocene Epoch

• Cenozoic Era

• Cambrian

The dinosaurs and reptiles were dominant in which Era?

• Precambrian

• Mesozoic

• Paleozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

during this era, climate was a warmer than it is today and polar zones did not yet exist

• paleozoic

• mesozoic

• cenozoic

Tags

NGSS.HS-ESS2-4

Jellyfish are one of the oldest species on Earth. In what time period did they first appear?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What type of environment do you think was present during the Devonian Period?

• mostly land

• land with some water

• mostly water

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1