Relative Age of Rocks

Front

What is the theory of Continental Drift?

Back

The continents had once been joined in a single landmass and have since drifted apart.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Front

What is relative age in geology?

Back

The age of rock compared to the ages of other rocks.

Front

What is absolute age in geology?

Back

The age of rock given the number of years since the rock formed.

Tags

NGSS.HS-ESS1-5

Front

What evidence did Wegener use to support his theory of Continental Drift?

Back

Land Features, Fossils, Climate - All of the above.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What was the name of the supercontinent that existed 250 million years ago?

Back

Pangaea.

Front

What is an index fossil?

Back

A fossil that is used to define and identify a particular time period in the geological time scale.

Tags

NGSS.MS-ESS1-4

Front

What is an unconformity in geology?

Back

A gap in the geological record that indicates a period of erosion or non-deposition.

Tags

NGSS.MS-ESS1-4

Front

What is the significance of mid-ocean ridges?

Back

They are underwater mountain ranges where new oceanic crust is created.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Front

What is the principle of superposition?

Back

In undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.

Tags

NGSS.MS-ESS1-4

Front

What is a fossil?

Back

The preserved remains or traces of ancient organisms.

Tags

NGSS.MS-LS4-1