Relative Dating and the Law of Superposition

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What is Relative Dating?

Back

Relative dating is a method used to determine the age of rocks and fossils by comparing them to other rocks and fossils.

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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.

Front

How do you determine the order of rock layers?

Back

You determine the order of rock layers by examining their position and using the Law of Superposition.

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What does it mean if a rock layer is above another layer?

Back

If a rock layer is above another layer, it is younger than the layer below it.

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What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What can fossils tell us about rock layers?

Back

Fossils can indicate the relative age of the rock layers in which they are found.

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What is an example of a rock layer sequence from oldest to youngest?

Back

An example sequence is: E, B, C, D, A.

Front

What is the significance of the white layer containing a fossil?

Back

The white layer containing a fossil indicates that it is older than the layers above it.

Front

What is the difference between relative age and absolute age?

Back

Relative age is the age of a rock compared to other rocks, while absolute age is the exact age of a rock.

Front

What is an unconformity in geology?

Back

An unconformity is a gap in the geological record that represents a period of erosion or non-deposition.