Geologic Time Line

The era we are currently living in

• Paleozoic

• Cenozoic

• Mesozoic

According to the law of superposition, which layer is the youngest?

• A

• B

• C

Tags

NGSS.MS-ESS1-4

The oldest rock layer is on the bottom if it is undisturbed

• Evolution

• Uniformitarianism

• The Law of Superposition

Tags

NGSS.MS-ESS1-4

Paleozoic, Mesozoic & Cenozoic are all

• Epochs

• Eras

• Periods

• Eons

Tags

NGSS.MS-ESS1-4

What periods are in the Mesozoic era?

• Tertiary, Quatenary

• Precambrian

• Triassic, Jurassic, Cretaceous

What are index fossils?

• A fossil found in the index of your science book.

• A fossil of an organism that only lived for a short period of time, so scientists use this fossil to find the absolute age of rock layers.

• A regular fossil

• An index fossil doesn't exist.

What era is the age of mammals?

• Precambrian

• Palezoic

• Mesozoic

• Cenozoic

If I compare the age of one item compared to the age of something else without knowing the exact ages...

• Relative dating

• Absolute dating

The principle that a sedimentary rock layer is older than the layers above it and younger than the layers below it if the layers are not disturbed is called ...

• unconformity

• law of crosscutting relationship

• law of superposition

• varve

Tags

NGSS.MS-ESS1-4

Numeric age of a rock

• relative age

• absolute age

• age

Tags

NGSS.HS-ESS1-5