Relative Dating

Front

What does relative dating of rock layers indicate about the depth of rocks?

Back

The deeper we dig, the older the rocks get.

Tags

NGSS.MS-ESS1-4

Front

How do sedimentary rocks usually form?

Back

Sedimentary rocks usually form horizontally.

Front

What is the Law of Superposition?

Back

Younger rocks lie above older rocks if the layers have not been disturbed.

Tags

NGSS.MS-ESS1-4

Front

What is a fault in geological terms?

Back

A fault is a fracture in the Earth's crust along which movement has occurred.

Front

What is an inclusion in geology?

Back

An inclusion is a piece of one rock unit that is contained within another.

Front

What is an intrusion in geology?

Back

An intrusion is a body of igneous rock that forms when magma cools and solidifies within the crust.

Front

What does the term 'unconformity' refer to?

Back

An unconformity is a surface that represents a gap in the geological record.

Tags

NGSS.MS-ESS1-4

Front

What is the significance of the Law of Cross-Cutting Relationships?

Back

It states that a geological feature (like a fault or intrusion) that cuts through another is younger than the feature it cuts.

Front

What is the principle of original horizontality?

Back

Layers of sediment are originally deposited horizontally under the action of gravity.

Front

What is the difference between relative dating and absolute dating?

Back

Relative dating places events in order without assigning a specific age, while absolute dating provides a numerical age.

Tags

NGSS.MS-ESS1-4