Relative and Absolute Dating

Front

What is the law of superposition?

Back

The law of superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Tags

NGSS.MS-ESS1-4

Front

Where are the oldest fossils typically found according to the law of superposition?

Back

Near the bottom of the rock layers.

Tags

NGSS.MS-ESS1-4

Front

What is radiometric dating?

Back

Radiometric dating is a method used to determine the age of rocks and fossils by measuring the decay of radioactive isotopes.

Tags

NGSS.HS-ESS1-6

NGSS.HS-PS1-8

Front

What does radiometric dating measure?

Back

Absolute time (dating).

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

Front

What is relative dating?

Back

Relative dating is a method of determining the age of a fossil or rock layer in relation to other layers, without determining its exact age.

Tags

NGSS.MS-ESS1-4

Front

Give an example of relative dating.

Back

Saying 'I am older than my sister' is an example of relative dating.

Front

What is absolute dating?

Back

Absolute dating is a method used to determine the exact age of a rock or fossil, often using radiometric techniques.

Tags

NGSS.HS-ESS1-5

Front

Which rock layer was formed most recently: Permian, Carboniferous, Silurian, or Cambrian?

Back

Permian.

Tags

NGSS.MS-ESS1-4

Front

Which rock layer is typically the oldest in a sequence?

Back

The bottom layer, often referred to as the oldest layer.

Tags

NGSS.MS-ESS1-4

Front

What is a half-life in the context of radiometric dating?

Back

A half-life is the time required for half of the radioactive isotopes in a sample to decay.

Tags

NGSS.HS-PS1-8