Rocks dating and Geologic Time Scale

The number of years that have passed since the rock formed is the rock's

• relative age
• law of superposition
• absolute age
• index fossil

Tags

NGSS.MS-ESS1-4

The age of a rock compared to the ages of other rocks is the rock's

• absolute age
• geologic age
• sedimentary age
• relative age

A formation of igneous rock on Earth's surface is known as 

• a gap
• an intrusion
• a fault
• an extrusion

A break in Earth's crust is called

• an intrusion
• a fault
• a layer
• an index fossil

Geologists use the law of _________ to determine the relative ages of sedimentary rock layers.

• geology
• superposition

Tags

NGSS.MS-ESS1-4

A mass of igneous rock below the Earth's surface is called a __________/

• intrusion
• extrusion

A gap in the geologic record is known as a(n)_______________.

• unconformity
• intrusion

Tags

NGSS.MS-ESS1-4

The position in which rock layers appear can be changed by gaps in the geologic record and by ______________.

• faults
• folding

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

According to the law of __________, in horizontal sedimentary rock layers the oldest layer is at the bottom and the youngest layer is at the top. 

• superposition
• index fossil

Tags

NGSS.MS-ESS1-4

Which layer is the oldest?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4