Stratigraphy

A/an ______________ is a large gap in the age of the rock layers becuase rock layers are missing because they have been eroded.

• intrusion

• fault

• unconformity

• index fossil

This law says that if a feature (fault, intrusion, etc) cuts across another feature, it is YOUNGER than the feature is cuts across.

• Law of Original Horizontality

• Law of Superposition

• Law of Cross Cutting Relationships

• Index Fossils

This law says that sedimentary rock layers are ALWAYS deposited in flat layers

• Law of Cross-Cutting Relationships

• Law of Original Horizontality

• Law of Superposition

• Law of Index Fossils

Based on the Law of Superposition, what can be concluded about fossils?

• fossils give clues about past climate patterns
• Fossils form from the hard parts of organisms
• The oldest fossils are found in the lowest rock layers
• The most recent fossils were advanced organisms

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

An intrusion is always ___________ than the rock layers around it and beneath it

• younger

• older

Tags

NGSS.MS-ESS1-4

For the cross section of rock layers, put them in order from OLDEST to YOUNGEST. 

• E, D, A, C, B
• D, A, C, E, B
• D, A, E, B, C
• D, E, A, B, C

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

Letter "F" is a....

• inclusion
• intrusion
• fault
• unconformity 

Tags

NGSS.MS-ESS1-4

To be considered an index fossil, it had to have lived for a relatively short period of time.

• True
• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which rock layer is the oldest?

• A
• B
• C
• E

Tags

NGSS.MS-ESS1-4