Geological Time Scale

Geological Time Scale

Assessment

Flashcard

Science, Biology, History

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

What is a geologic column?

Back

A group of rock layers that are placed in order of their relative ages.

2.

FLASHCARD QUESTION

Front

What does 'relative age' refer to?

Back

Determines the order of past events but not the absolute age.

3.

FLASHCARD QUESTION

Front

What is 'absolute age'?

Back

The actual age of a rock or fossil, determined using the decay of radioactive elements.

4.

FLASHCARD QUESTION

Front

What does extinction mean in geology?

Back

The end of life for a group of organisms, usually a species, and the end of a geologic time (Era).

5.

FLASHCARD QUESTION

Front

Why do we know more about the Cenozoic era than the Precambrian Era?

Back

The Cenozoic era is more recent and has left behind more visible evidence such as fossils and geological formations.

6.

FLASHCARD QUESTION

Front

What is the significance of the Geological Time Scale?

Back

It provides a framework for understanding Earth's history and the timing of events in the geological past.

7.

FLASHCARD QUESTION

Front

What are the main divisions of the Geological Time Scale?

Back

Eons, Eras, Periods, Epochs.

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