Geologic Time scale

Front

In which time period are we currently living in?

Back

Cenozoic Era

Front

In what time period did jellyfish first appear?

Back

Precambrian Era

Front

In what time period did Pangaea, the super continent, appear?

Back

Paleozoic Era

Front

Dinosaurs, small mammals, and birds are found in this time period.

Back

Mesozoic Era

Front

Which time period is the longest? Options: Precambrian Era, Paleozoic Era, Mesozoic Era, Cenozoic Era

Back

Precambrian Era

Front

What does "relative age" tell about a rock layer or fossil?

Back

The age of one rock layer or fossil compared to another. (example: one is older or younger than the other)

Front

What does absolute age tell about a rock layer or fossil?

Back

The exact age of a fossil determined by radiometric dating or the half life of radioactive elements.

Front

Characteristics of index fossils

Back

Easily recognizable, Wide geographic distribution, Live a short time

Front

Which rock layer is the newest? (Options: A, B, C, D)

Back

A

Front

Which fossil is older than the fish fossil?

Back

D