Geologic Time Scale

Geologic Time Scale

Assessment

Flashcard

Science

8th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Geologic Time Scale?

Back

The Geologic Time Scale is a record of the history of the Earth preserved in rocks and fossils.

2.

FLASHCARD QUESTION

Front

What are the main divisions of the Geologic Time Scale?

Back

The main divisions are eons, eras, periods, epochs, and ages.

3.

FLASHCARD QUESTION

Front

What is an eon in the context of the Geologic Time Scale?

Back

An eon is the largest division of geological time, lasting billions of years.

4.

FLASHCARD QUESTION

Front

What is the significance of the Precambrian era?

Back

The Precambrian era accounts for about 88% of Earth's history and includes the formation of the Earth and the earliest life forms.

5.

FLASHCARD QUESTION

Front

What major event marks the beginning of the Paleozoic era?

Back

The Cambrian Explosion, which saw a rapid diversification of life.

6.

FLASHCARD QUESTION

Front

What is the Mesozoic era known for?

Back

The Mesozoic era is known as the age of reptiles, including dinosaurs.

7.

FLASHCARD QUESTION

Front

What significant event marks the end of the Mesozoic era?

Back

The mass extinction event that led to the extinction of the dinosaurs.

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