Unit 1 review game

Front

Best index fossil?

Back

Trilobite

Front

Absolute Age vs Relative Age

Back

Only absolute dating finds the age in years.

Front

Younger rocks above older rocks

Back

Law of superposition

Front

Atmosphere 30,000 years ago

Back

Different from today's atmosphere

Front

Best method to determine rock age

Back

Radiometric (radioactive) dating

Front

Identical index fossil in two areas

Back

Two rock layers deposited at approximately the same time

Front

Law of Superposition

Back

Lowest sedimentary layers are oldest.

Front

Oldest rock sample based on uranium to lead ratio

Back

Sample 4

Front

Fossil age with 25% Carbon 14

Back

11,460 years old

Front

Type of rock with evidence of ancient life

Back

Sedimentary