5.1 - 5.2 Measuring Earth's Age Flashcard-

Front

What is the principle of superposition in geology?

Back

The oldest rocks are at the bottom, and the youngest are at the top.

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FL.SC.7.E.6.3

Front

Which method is used to determine the absolute age of rocks?

Back

Radioactive dating

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FL.SC.7.E.6.3

Front

In the principle of original horizontality, how are most rock layers initially deposited?

Back

Horizontally

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FL.SC.7.E.6.3

Front

What does the principle of lateral continuity suggest about rock layers?

Back

They are deposited in large, continuous sheets.

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FL.SC.7.E.6.3

NGSS.MS-ESS1-4

Front

If a rock contains pieces of another rock, what can be inferred about the age of the rock containing the pieces?

Back

It is younger than the pieces.

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FL.SC.7.E.6.3

NGSS.MS-ESS1-4

Front

How does the principle of cross-cutting relationships help in determining the relative age of rocks?

Back

It shows that the feature that is cut is older.

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FL.SC.7.E.6.3

NGSS.MS-ESS1-4

Front

Method for measuring the age of Earth: Superposition, Radioactive dating, Lateral continuity, Original horizontality

Back

Radioactive dating

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FL.SC.7.E.6.3

Front

Why is the law of superposition important in geology?

Back

It helps determine the relative age of rock layers.

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FL.SC.7.E.6.3

NGSS.MS-ESS1-4

Front

What can be inferred if a rock layer is tilted or folded?

Back

It was originally deposited horizontally and later disturbed.

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FL.SC.7.E.6.3

Front

How does radioactive dating differ from the principle of superposition?

Back

Radioactive dating determines absolute age, while superposition determines relative age.

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FL.SC.7.E.6.3