Earth History

Stratigraphy is

• a type of rock

• the study of rock layers

• how we know older rocks are at the bottom

• how we know inclusions are older than the surrounding layer

Tags

NGSS.MS-ESS1-4

The Law of ____________ says that layers of sediment (dirt/rock) are laid down horizontally.

• Superposition

• Cross-Cutting

• Original Horizontality

• Inclusions

The Law of Superposition says in undisturbed layers of rock ___________

• The youngest layer is in the middle

• The youngest layer is at the bottom

• The youngest layer is at the top

Tags

NGSS.MS-ESS1-4

This is an example of what law?

• Law of superposition

• Law of inclusions

• Cross-cutting law

• Law of original horizontality

Tags

NGSS.MS-ESS1-4

This picture has to do with the law of inclusions. It says that bits of rock found in another layer are ________ than the rock layer around it.

• Younger

• Older

• The same age

Tags

NGSS.MS-ESS1-4

___________ are formed when sediment is laid down and put under heat and pressure.

A _______ is a bend in rock due to compressional forces.

A _________ forms when stress breaks down the strength of the rock causing a fracture.

What do we call the system used to organize Earth's history?

• A calendar

• The geologic timeline

• The Earth timeline

Tags

NGSS.MS-ESS1-4

Which of these is NOT a main era of the geologic time line?

• Cenozoic

• Precambrian

• Mesozoic

• Cambriazoic

Tags

NGSS.MS-ESS1-4