Reconstructing Earth's History - TCI Planet Earth Lesson 8

Front

What is the most recent era that we are currently in?

Back

Cenozoic

Front

What was the main cause of the mass extinction at the end of the Mesozoic Era?

Back

Asteroid or comet impact

Front

In which era did the formation of the Earth occur?

Back

Precambrian

Front

What are the parts of the geologic time scale in order from broadest to narrowest?

Back

Eon, era, period, epoch

Front

What is the Nebular Theory?

Back

A theory on how the solar system was formed.

Front

What is the geologic time scale?

Back

A system of chronological dating that relates geological strata to time.

Front

What is an eon in the context of the geologic time scale?

Back

The largest division of geological time, lasting hundreds of millions to billions of years.

Front

What is an era in the context of the geologic time scale?

Back

A subdivision of an eon, lasting tens to hundreds of millions of years.

Front

What is a period in the context of the geologic time scale?

Back

A subdivision of an era, lasting tens of millions of years.

Front

What is an epoch in the context of the geologic time scale?

Back

A subdivision of a period, lasting millions of years.