Fossils and Stratigraphy Flashcard

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed rock strata, the oldest layer is at the bottom and the youngest layer is at the top.

Tags

NGSS.MS-ESS1-4

Front

What does the Law of Inclusions state?

Back

The Law of Inclusions states that any rock fragments (inclusions) found within a rock layer are older than the rock layer itself.

Tags

NGSS.MS-ESS1-4

Front

Define Stratigraphy.

Back

Stratigraphy is the scientific study of rock layers (strata) and layering (stratification).

Tags

NGSS.MS-ESS1-4

Front

What is the significance of Unconformities in geology?

Back

Unconformities represent gaps in the geological record, indicating periods of erosion or non-deposition.

Tags

NGSS.MS-ESS1-4

Front

Explain the concept of Original Horizontality.

Back

The principle of Original Horizontality states that 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 determines the sequence of events, while absolute dating provides a specific age or date for a rock or fossil.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of ancient organisms, typically found in sedimentary rock.

Tags

NGSS.MS-LS4-1

Front

How do fossils help in understanding Earth's history?

Back

Fossils provide evidence of past life forms and environments, helping scientists reconstruct the history of life on Earth.

Tags

NGSS.MS-LS4-1

Front

What is the role of paleontology in geology?

Back

Paleontology is the study of fossils and ancient life, which helps in understanding the evolution of species and past ecosystems.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is a stratigraphic column?

Back

A stratigraphic column is a graphical representation of the vertical sequence of rock layers, showing their relative thickness and age.

Tags

NGSS.MS-ESS1-4