Earth History

Method by which order of events or age of rocks is determined by examining the position of rocks in a layer

• relative dating

• absolute dating

• radiometric dating

Tags

NGSS.MS-ESS1-4

Fossils of species that existed for  short periods and were widespread 

• trace fossils 

• index fossils 

• original remains 

Which of the following occurred relatively most recently?

• Basalt intrusion

• Breccia

• Conglomerate

• Sandstone

Tags

NGSS.MS-ESS1-4

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers

• The age of fossils

• The relative age of rock layers

• the super powers of squirrels

Tags

NGSS.MS-ESS1-4

What is the relative age of a rock?

• The age determined by the things around it.

• The age of an igneous rock.

• The age determined by radioactive dating.

• The time it takes for 1/2 of the radioactive atoms to decay in an element.

Tags

NGSS.MS-ESS1-4

What is the absolute age of a rock?

• The age determined by the things around it.

• The age of an igneous rock.

• The age determined by radioactive dating.

• The time it takes for 1/2 of the radioactive atoms to decay in an element.

Tags

NGSS.HS-PS1-8

A unit of geologic time that subdivides eras

• period

• time span

Tags

NGSS.MS-ESS1-4

Which Era has the most complex organisms?

• Cenozoic

• Mesozoic

• Paleozoic

• Quaternary

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which period is closest to present day?

• Cambrian

• Devonian

• Triassic

• Tertiary

How many years ago did the Mesozoic Era begin?

• 245 years

• 245 million years

• 65 years

• 65 million years

Tags

NGSS.MS-ESS1-4