Superposition

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Tags

NGSS.MS-ESS1-4

Front

What does it mean if a rock layer is 'more recent'?

Back

A rock layer is considered 'more recent' if it was deposited after another layer, indicating it is younger in age.

Tags

NGSS.MS-ESS1-4

Front

How can you determine the relative age of rock layers?

Back

You can determine the relative age of rock layers by examining their position; layers on top are younger than those below them.

Tags

NGSS.MS-ESS1-4

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism, often found in sedimentary rock.

Tags

NGSS.MS-LS4-1

Front

What is deposition in geology?

Back

Deposition is the process by which sediments settle out of a transporting medium, such as water or air, and accumulate in layers.

Tags

NGSS.MS-ESS2-2

Front

What is the significance of the bottom layer in a sequence of rock layers?

Back

The bottom layer is significant because it is typically the oldest layer in a sequence, providing insight into the geological history.

Tags

NGSS.MS-ESS1-4

Front

What can be inferred if a rock layer contains fossils?

Back

If a rock layer contains fossils, it can be inferred that the layer was formed during a time when living organisms existed.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Front

What is the difference between absolute age and relative age?

Back

Absolute age is the actual age of a rock or fossil in years, while relative age is its age compared to other rocks or fossils.

Front

What does it mean if two rock layers are 'approximately the same age'?

Back

If two rock layers are 'approximately the same age', it means they were deposited around the same time in geological history.

Tags

NGSS.MS-ESS1-4

Front

How do archaeologists use diagrams of dig sites?

Back

Archaeologists use diagrams of dig sites to visualize the arrangement of layers and artifacts, helping them understand the sequence of events.