Geologic Time Scale Vocab

Geologic Time Scale Vocab

Assessment

Flashcard

Science

9th Grade

Practice Problem

Hard

Created by

Wayground Content

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13 questions

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1.

FLASHCARD QUESTION

Front

Technique to date materials (rocks) via radioactive decay rates.

Back

radiometric dating

2.

FLASHCARD QUESTION

Front

Division of geologic time, a subdivision of an era, further divided into epochs.

Back

period

3.

FLASHCARD QUESTION

Front

Fossils of organisms that existed in large numbers for a short geologic time; used to date rocks.

Back

index fossil

4.

FLASHCARD QUESTION

Front

Beginning of the Paleozoic Era, 540-485 million years ago

Back

Cambrian Period

5.

FLASHCARD QUESTION

Front

Longest division of geologic time scale

Back

eon

6.

FLASHCARD QUESTION

Front

Biological process in plants, algae, and some bacteria that converts water and CO2 into organic compounds using solar energy.

Back

photosynthesis

7.

FLASHCARD QUESTION

Front

Age in years of a fossil, rock, feature, or event, usually via radiometric dating.

Back

absolute age

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