Fossil Dating

Relative age dating is used to determine the...

• actual age of an event

• length of time between two events

• age of one event in comparison with other events

• rate at which a gologic process occurs

Traces or remains of organisms that lived long ago

• Fossil

• Unconformity

• Superposition

• Column

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

NGSS.MS-LS4-2

The Geologic Time Scale is a record of what?

• old geologists

• sweet geology music

• the known history of rocks and fossils

• a list of every living thing ever

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The numerical age, in years, of any object.

• absolute age

• relative age

• space age

• old age

Match the following

Groups:

(a) Relative Dating

,

(b) Absolute / Radioactive Dating

• Uses the law of superposition

• Uses knowledge of isotopes and half-lives

• Can tell you the age of a fossil (example: 50,000 years old)

• Used to determine which fossils are older or younger (example: layer A is older than layer B)

What is a true statement?

• Shells and ammonites first appeared in Layer A

• layer C is older than layer D

• Layer C is the youngest

• fossils of four legged animals appeared in Layer A

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What is the general trend for the number of marine families after the end of the triassic (from 200 MYA to 150 MYA)

• marine families increased

• marine families decreased

• marine families stayed the same

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

How many million years ago (MYA) did the end of the ORDOVICIAN period occur?

• around 200 MYA

• around 50 MYA

• around 250 MYA

• Around 450 MYA

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What layer is OLDER than the Quaternary layer but YOUNGER than Cretaceous?

• Quaternary

• Tertiary

• Cretaceous

• Permian

Tags

NGSS.MS-ESS1-4

What is Radiometric Dating?

• Arrangement of geological events and rocks left behind in a sequence

• Materials found on the rock surface that indicate its age

• Observation of strata to comparatively determine their age

• Technique used to numerically determine the approximate age of fossils or rocks