Chapter 11 - Lesson 1 Quiz

Timeline that geologists have developed of Earth's past is called what?

• Earth's Timeline

• Geologists Timeline

• Geologic Time Scale

• Earth's Time Scale

What is the right order of the Geologic Time Scale?

• -- Epochs

  -- Eons

  -- Eras

  -- Periods

• -- Periods

  -- Eons

  -- Epochs

  -- Eras

• -- Eons

  -- Eras

  -- Periods

  -- Epochs

Scientists chose ____ based on observations of Earth's rock layers when developing the Geologic Time Scale.

• Time Boundaries

• Limit Boundaries

• Timeless frames

• Boundaries

The geologic time scale is divided into ______ units of time.

• Unequal or Uneven

• Equal or Even

The boundaries between units of the Geologic Time Scale are irregular (uneven) because ____.

• the changes did not occur at regular (even) intervals.

• the changes did not occur at irregular (uneven) intervals.

• the chances did not occur at regular (even) intervals.

The longest unit of geologic time.

• Eon

• Forever

• Time period

• Rock History

What is Earth's current eon?

• Phanerozoic Eon

• Paleozoic Eon

• Plasticorzoic Eon

A subdivision of a geologic eon.

• Eon

• Epoch

• Era

Which era is longer than the Mesozoic and Cenozoic eras combined?

• Paleozoic Era

• Jurassic Era

• Dinosaur Era

A subdivision of a geologic era.

• Period

• Timing

• Sub-Time