Geologic Time Review

When did the biggest mass extinction event occur?

• Cambrian Explosion

• Devonian

• Permian

• Cretaceous

Tags

NGSS.MS-LS4-1

Bacteria first appears in what EON?

• Phanerozoic

• Proterozoic

• Archean

• Hadean

The Cambrian explosion was an explosion of what?

• Astroid

• Mammals

• Dinosaurs

• Life

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What PERIOD did dinosaurs first appear in the rock record?

• Pleistocene

• Triassic

• Cambrian

• Permian

Tags

NGSS.MS-ESS1-4

How many mass extinction events are recognized by scientists to have occurred throughout Earth's history?

• 3

• 5

• 7

• 9

Tags

NGSS.MS-LS4-1

When an organism is completely wiped out of existence, we call it?

• extinction
• adaptation
• evolution
• inbreeding

Tags

NGSS.MS-LS4-1

What caused snowball earth?

• The sun was only 70% as bright

• Cyanobacteria preforming photosynthesis

• The moon was closer to the earth

• Extremophiles could survive

Tags

NGSS.MS-LS1-6

In what EON was the earth a giant sphere of magma?

• Hadean

• Archean

• Phanerozoic

• Proterozoic

Which PERIOD is known as the age of fishes?

• Cambrian

• Ordovician

• Devonian

• Carboniferous

Which PERIOD is known as the age of reptiles?

• Carboniferous

• Silurian

• Ordovician

• Permian