Geologic History

What time unit makes up 85% of our history?

• Pleistocene

• Cambrian

• Precambrian

• Devonian

Tags

NGSS.MS-ESS1-4

What is the biggest unit of time?

• Eras

• Eons

• Periods

• Epochs

Tags

NGSS.MS-ESS1-4

What unit of time can Eons be broken down into?

• Eons

• Eras

• Periods

• Epochs

Tags

NGSS.MS-ESS1-4

What unit of time can Eras be broken down into?

• Eons

• Eras

• Periods

• Epochs

What is the smallest unit of time called?

• Eons

• Eras

• Periods

• Epochs

Index fossils are great time markers because they...

• Lived for a very short period of time

• They are found in many locations on the planet

• Both of these are really important for Index fossils

Tags

NGSS.MS-LS4-1

Volcanic eruptions are great time markers because they...

• Occur for a very short period of time

• Ash covers a huge area on the planet

• Both of these are really important for volcanic eruptions

Tags

NGSS.MS-ESS1-4

How long ago did the dinosaurs die off?

• 1 million years ago

• 50 million years ago

• 65 million years ago

• 1 billion years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What inferred event killed off the dinosaurs

• The earths revolution got too elliptical

• An asteroid struck the planet

• An earthquake

• A tsunami event

Tags

NGSS.MS-ESS3-2

NGSS.MS-LS4-1

What major event changed the entire planet during the Precambrian?

• Stromatolites produced oxygen in the oceans and atmosphere

• Organisms began leaving the oceans for land

• The dinosaurs became extinct

• The appearance of humans

Tags

NGSS.MS-LS1-6