Geologic Time Scale Introduction

What are the four eras in order from OLDEST to NEWEST?

• Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

• Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

• Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

• Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

Tags

NGSS.MS-ESS1-4

The geologic time scale is a record of....

• the history of fossils only

• the history of rocks only

• the history of rock layers and fossils

• geologist and paleontologist notes

Tags

NGSS.MS-ESS1-4

Paleontologists infer that the earth is approximately how many years old?

• 4.5 million years

• 450 million years

• 450 billion years

• 4.5 billion years

Tags

NGSS.MS-ESS1-4

_______________ is the long span of time that begins geologic time.

• Precambrian

• Phanerozoic

• Cenozoic

• Paleozoic

Tags

NGSS.MS-ESS1-4

The Triassic Period, the Jurassic Period, and the Cretaceous Period occurred in what era?

• Cenozoic

• Mesozoic

• Paleozoic

• Cenozoic

How many divisions of time are there in the geologic time scale?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS1-4

What are the eras of the Phanerozoic Eon in order from oldest to most recent?

• Paleozoic, Cenozoic, Mesozoic

• Mesozoic, Cenozoic, Paleozoic

• Mesozoic, Paleozoic, Cenozoic

• Paleozoic Mesozoic, Cenozoic

Tags

NGSS.MS-ESS1-4

What is the largest/major unit of geologic time?

• Epoch

• Period

• Era

• Eon

Tags

NGSS.MS-ESS1-4

Which is the correct order to time units from smallest to largest?

• Epoch, period, era

• Epoch, era, period

• Era, period, epoch

• Period, epoch, era

Tags

NGSS.MS-ESS1-4

The second broadest category of geologic time is______________?

• era

• eon

• epoch

• period

Tags

NGSS.MS-ESS1-4