Realtive and Absolute Dating Flashcards

0
Q

Absolute Dating

A

It gives an actual age reported as years before present.

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1
Q

Relative Dating

A

It does not give an exact age. It simply consists of just knowing which object is older or younger.

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2
Q

The Law of Superposition

A

This states that the older layers lie underneath the younger layers in undisturbed contexts.

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3
Q

Radiocarbon Analysis

A

It measures the amount of carbon 14 in charcoal, wood, shell, and bone. When an organism dies carbon 14 decays at a known rate, so the amount of carbon 14 left in the organism tells you how long it has been since it died.

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4
Q

Potassium-Argon Analysis

A

This analysis can date rocks that have been heated, either by a volcano eruption, natural fire, or human hearth. ( used up to 4.6 billion years burned up to 100,000 years)

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5
Q

Electron Spin Resonance

A

It measures the number of trapped electrons in bone or shell. This allows scientists to determine the material’s last exposure of sunlight ( before buried).

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