Earth's History

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old
• 4.6 million years old

Which of the following places the geologic time eras in order from oldest to most recent?

• Precambrian, Paleozoic, Mesozoic, Cenozoic
• Mesozoic, Cenozoic, Paleozoic, Precambrian
• Cenozoic, Mesozoic, Paleozoic, Precambrian
• Paleozoic, Cenozoic, Precambrian, Mesozoic

What is a fossil?

• The remains of an organism from long ago
• A dead plant or animal laying on the ground
• A rock
• The remains of an object from long ago

Where can the oldest layer be found?

• The top layer
• The middle layer
• They are all the same age
• The bottom layer

What are the 3 main fossil fuels?

• Coal, Oil, and Gasoline
• Coal, Oil, and Natural Gas
• Electricity, Gasoline, Petroleum
• Coal, Oil, Non-renewable Resources

Which layer formed first?

• Rock Layer W
• Rock Layer X
• Rock Layer Y
• Rock Layer Z

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

Which time span is the longest?

• Cenozoic
• Cambrian
• Precambrian
• Phanerozoic

The Cenozoic Era is often called "the Age of the ____"

• Dinosaurs
• Mammals
• Amphibians
• Reptiles

Identify the Era:
Amphibians first developed in this era.

• Precambrian
• Paleozoic
• Mesozoic
• Cenozoic