Earth History--Law of Superposition-Notes-KS

Relative age is the exact number of years since a rock was formed, while absolute age is its age compared to other rocks.

Relative age is its age compared to other rocks, while absolute age is the number of years since the rock was formed.

Relative age and absolute age both refer to the exact age of a rock.

Relative age is used only for fossils, while absolute age is used for rocks.

Because fossils can only be found in undisturbed areas.

Because disturbances can mix layers and change the order of fossils.

Because relative dating uses chemical tests that require undisturbed rocks.

Because undisturbed areas have more fossils.

E

D

C

B

A

Extrusions

Intrusions

Faults

All of the above

age

location

fossil

origin

old

new

alive

distinctive

never

globally

locally

possibly

A fossil that is found only in one location and lived for a long period of time

A fossil that is widely distributed and represents a type of organism that existed only briefly

A fossil that is found in volcanic rocks

A fossil that is used to determine the absolute age of rocks

Relative dating uses radioactive elements, absolute dating does not.

Relative dating provides an exact age, absolute dating provides an estimate.

Relative dating estimates the order of events, absolute dating determines the exact age.

Relative dating is only used for fossils, absolute dating is only used for rocks.

It shows the types of rocks found in different layers.

It provides evidence of the types of organisms that lived and the environments they lived in.

It explains how mountains are formed.

It describes the weather patterns of the past.