Geologic Time Review

What Era are we currently in?

• Cenozoic Era

• Precambrian

• Paleozoic Era

• Mesozoic Era

Tags

NGSS.MS-ESS1-4

Which rock layer is the newest?

• the top layer

• the middle layers

• the bottom layers

• you can't tell which layer is older

Tags

NGSS.MS-ESS1-4

1. mass extinction

• remains of an organism that lived in the past

• the end of a group of organisms

• finding out how old one rock is compared to another rock

• the rate of atom decay

Tags

NGSS.MS-LS4-1

1. fossils

• finding out how old one rock is compared to another rock

• the end of a group of organisms

• remains of an organism that lived in the past

•  finding out how old a rock is in actual years

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which layers are oldest?

• the top layer

• the layers in the middle

• the bottom layer

• you can't tell which is older based on position

Tags

NGSS.MS-ESS1-4

A unit of geologic time that subdivides eras

• period
• time span

Tags

NGSS.MS-ESS1-4

An age is a unit of time on the geologic time scale that is the smallest hierarchical unit

• True
• False

Tags

NGSS.MS-ESS1-4

A representation of a time-based one the rock record of Earth

• Era

• Geologic Time Scale
• Eon

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

a unit of time that's shorter than a period but longer than an age

• Era

• Geologic Time Scale
• Eon

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

a unit of geologic time that is a subdivision of an era and lasts tens of millions of years

• Era

• Geologic Time Scale
• Eon

• Period

• Epoch

Tags

NGSS.MS-ESS1-4