Relative and Absolute Dating

Front

How old is the Earth?

Back

The Earth is approximately 4.6 billion years old.

Tags

NGSS.MS-ESS1-4

Front

What type of fossils provide information about how organisms moved, rested, or burrowed?

Back

Trace fossils provide this information.

Front

What does the Law of Superposition state?

Back

The Law of Superposition states that in undisturbed layers of rock, younger rocks lie above older rocks.

Tags

NGSS.MS-ESS1-4

Front

What type of fossil is formed when an organism's imprint is pressed into mud?

Back

This type of fossil is called a Mold.

Front

What is an unconformity in geology?

Back

An unconformity is a surface that represents a gap in the geological record, indicating that rock layers have been eroded or not deposited.

Tags

NGSS.MS-ESS1-4

Front

What is relative dating?

Back

Relative dating is a method used to determine the age of rocks and fossils in relation to one another.

Front

What is absolute dating?

Back

Absolute dating is a method used to determine the exact age of a rock or fossil, often using radiometric techniques.

Front

What are inclusions in geology?

Back

Inclusions are fragments of one rock type that are contained within another rock type, indicating that the inclusion is older than the surrounding rock.

Front

What is a cast fossil?

Back

A cast fossil is formed when a mold is filled with sediment or minerals, creating a replica of the original organism.

Front

What is the significance of index fossils?

Back

Index fossils are used to identify and date the layers of rock in which they are found, as they are widespread and existed for a relatively short period.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2