Geologic Time Scale

Geologic Time Scale

Assessment

Flashcard

Science

8th Grade

Practice Problem

Medium

Created by

Wayground Content

Used 1+ times

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Geologic Time Scale?

Back

A system of chronological dating that relates geological strata to time, dividing Earth's history into different periods, eras, and epochs.

2.

FLASHCARD QUESTION

Front

What significant event marks the beginning of the Paleozoic Era?

Back

The Cambrian Explosion, a rapid diversification of life forms.

3.

FLASHCARD QUESTION

Front

What major extinction event led to the extinction of all non-avian dinosaurs?

Back

The Cretaceous - Tertiary Extinction.

4.

FLASHCARD QUESTION

Front

What likely caused the extinction of the woolly mammoth?

Back

The warming climate at the end of the last Ice Age.

5.

FLASHCARD QUESTION

Front

During which era were marine plants and invertebrates particularly abundant?

Back

The Paleozoic Era.

6.

FLASHCARD QUESTION

Front

What caused the Ordovician - Silurian Extinction?

Back

Global cooling and lowering of sea levels due to glacier formation.

7.

FLASHCARD QUESTION

Front

What is the significance of the Permian-Triassic Extinction?

Back

It is the largest mass extinction event in Earth's history, resulting in the loss of about 90% of species.

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