geologic time scale review GREEN

Multiple Choice

Geologic Time Scale

• Division of _______________________

• Man's history

• Universal history

• Earth's History

• America's History

Multiple Choice

Geologic Time Scale

• Based on the _____________________ that lived only during certain periods

• Life forms

• Elements in the air

• Soil Distribution

• Air Quality

Multiple Choice

Divisions of the Geologic Time Scale

• ______________

  • Longest subdivision

• Eon

• Era

• Period

• Epoch

Multiple Choice

Divisions of the Geologic Time Scale

• ______________

  Marked by major, world wide changes in types of fossils present

• Eon

• Era

• Period

• Epoch

Multiple Choice

Divisions of the Geologic Time Scale

• ______________

  Categorized by the types of life existing

• Eon

• Era

• Period

• Epoch

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Divisions of the Geologic Time Scale

• ______________

  Smaller units of time

• Eon

• Era

• Period

• Epoch

Multiple Select

Divisions of the Geologic Time Scale

What determines when a time division begins or ends?

• Major events

• Eras

• Period

• Extinctions

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Index Fossils 

• Remains of species that existed on Earth for____________

• Very close together

• Short periods of time

• Long Periods of time

• Widespread

Multiple Choice

Index Fossils 

What do geologists use to estimate the age of rocks

• Periodic Table

• Short periods of time

• Fossil Index

• Widespread

Multiple Choice

This picture is an example of

• Organism Index

• Shell Index

• Rock Index

• Fossil Index

Multiple Choice

Precambrian Time

4.5 billion years ago - 544 million years ago = 4 billion years of time

Contains ____________ of Earth’s history

• 20%

• 80%

• 90%

• 65%

Multiple Choice

Precambrian Time

• Cyanobacteria: Blue-green algae

• Tiny, soft-bodied organisms

  these are examples of ?

• the earliest non-life forms

• the earliest life forms

• the earliest atoms

• the earliest food sources

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Paleozoic Era

544 million years ago - 248 million years ago

What type of life was present?

• Land

• Air

• Wind

• Ocean

Multiple Choice

Paleozoic Era

• First _________________ appear - FISH!

• Life moved on to land

• vertabrates

• gills

• wings

• snails

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Paleozoic Era

First _____________ extinction happens

• Minor

• Mass

• Small

• Nothing happened

Multiple Select

Mesozoic Era - “Middle Life”

248 million years ago - 65 million years ago

Age of the dinosaur!

Appearance of _____________, _______________, and _______________

• mammals

• Sunlight

• birds

• Flowering plants

Multiple Choice

Mesozoic Era - “Middle Life”

2nd Mass __________________ happens

• comet

• extinction

• explosion

• nothing happens

Multiple Choice

Cenozoic Era - “Recent Life”

• 65 million years ago - Today

• Known as the "age of ______"

• Scrat

• Mammoths

• Tigers

• Mammals

Multiple Choice

Cenozoic Era - “Recent Life”

• Most recent _____________ accured

• Scrat

• heat wave

• ice age

• stone age

Multiple Choice

 

• The process in which groups of species _________________________________

• era

• explosion

• extinctions

• epoch

Multiple Choice

what percentage of a species needs to gone in order for it to be considered extinct?

• 10%-20%

• 50%-70%

• 70%-90%

• 100%

Multiple Choice

what percentage of a species needs to gone in order for it to be considered endangered?

• 10%-20%

• 50%-70%

• 70%-90%

• 100%