Geologic Time Scale Quiz 1 Chapter 12

What can sometimes be used to distinguish layers of rock?

• Color

• Fossils

• Formation during a single year or season

• Thickness

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Thick stacks of rock with no fossils provide ______ information for subdividing geologic time.

• ample

• little

• detailed

• extensive

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What is the purpose of the geologic time scale?

• To measure short periods of time

• To record Earth's history

• To predict future events

• To study weather patterns

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Which of the following is NOT a feature of the geologic time scale?

• Divides time into bigger blocks

• Records changes in life forms

• Predicts future climate

• Begins 4.6 billion years ago.

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What does the geologic time scale divide time into?

• Days

• Months

• Years

• Bigger blocks

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The geologic time scale goes from Earth's formation to the present. True or False?

• True

• False

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Fill in the blank: The geologic time scale is important because it shows when ______ first appeared on Earth.

• Water

• Life

• Mountains

• Oceans

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Unlike divisions of time such as days or minutes, the divisions of the geologic time scale have no ______.

• Fixed lengths

• Names

• Importance

• Relevance

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