Geology Unit Review

Front

Which era is the longest? Options: Cenozoic, Cambrian, Precambrian, Phanerozoic

Back

Precambrian

Front

The geologic time scale is a record of....

Back

the history of rock layers and fossils

Front

Paleontologists infer that the earth is approximately how many years old?

Back

4.5 billion years

Front

Paleozoic, Mesozoic & Cenozoic are all

Back

Eras

Front

Which is the most recent era of time- the one that we are currently in? Options: Mesozoic, Paleozoic, Cenozoic, Precambrian

Back

Cenozoic

Front

Name the 4 time frames in order from oldest to youngest: Precambrian Time, Paleozoic Era, Mesozoic Era, Cenozoic Era.

Back

Precambrian Time, Paleozoic Era, Mesozoic Era, Cenozoic Era

Front

The Era with the largest extinction we know of is the...

Back

Paleozoic era

Front

The Era when humans first appeared was...

Back

Cenozoic

Front

age of reptiles

Back

Mesozoic Era

Front

What is the "age of mammals"?

Back

Cenozoic Era