Geologic Time Scale

Geologic Time Scale

Assessment

Flashcard

Science

6th - 8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

Preserved remains of plants and animals from the remote past are called __________.

Back

fossils

2.

FLASHCARD QUESTION

Front

Approximately how old is Earth?

Back

4.6 billion years

3.

FLASHCARD QUESTION

Front

The end of life for a group of organisms, usually a species, is called a ___________.

Back

mass extinction

4.

FLASHCARD QUESTION

Front

Jellyfish are one of the oldest species on Earth. In what time period did they first appear?

Back

Precambrian

5.

FLASHCARD QUESTION

Front

What does 'relative age' tell about rock layers or fossils?

Back

the age of one rock layer or fossil compared to another

6.

FLASHCARD QUESTION

Front

What is the Geologic Time Scale?

Back

A system that organizes Earth's history into different time intervals based on significant geological and biological events.

7.

FLASHCARD QUESTION

Front

What are the four main eons of Earth's history?

Back

Hadean, Archean, Proterozoic, Phanerozoic

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