Geologic Time and Relative Dating

a model scientists use to describe the timing of events and the relationships between those events in earth’s history.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

one of four long periods of geologic time from Precambrian to the present.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

geologic time intervals that eras are divided into.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

a division of geologic time; a subdivision of a period. Shortest length of time.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

What Era were mammals first seen?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

According to paleontologists, how old is the Earth?

• 3.5 Billion Years Old

• 543 Million Years Old

• 57 Million Years Old

• 4.6 Billion Years Old

Tags

NGSS.MS-ESS1-4

Analyze the layers of undisturbed sedimentary rock. Which layer of sedimentary rock is oldest?

• Q

• R

• S

• T

• U

Tags

NGSS.MS-ESS1-4

Relative dating of rock layers tells us that the deeper we dig, ______________________.

• The younger the rocks get

• The smellier the rocks get

• The harder the rocks get

• The older the rocks get

Tags

NGSS.MS-ESS1-4

Used to determine whether an object is older or younger than other objects

• Superposition
• Relative Dating
• Fossil
• Unconformity

Tags

NGSS.MS-ESS1-4

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting
• Law of superposition
• Relative Dating
• Unconformity