Geologic Time Scale j

Which era are we currently in?

• Quaternary
• Cenozoic

• Jurassic
• Mesozoic

Place the following in order starting with the OLDEST
1  Paleozoic
2  Cenozoic
3  Precambrian
4  Mesozoic

• 1 3 2 4 
• 3 1 4 2
• 4 3 2 1 
• 2 3 1 4

Tags

NGSS.MS-ESS1-4

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

• Preserved fossils

• Index fossils

• Imprints

• Radioactive dating

Tags

NGSS.MS-LS4-1

Which era is know as the age of invertebrates, fish, amphibians?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

What does absolute age tell us about a rock layer or fossil?

• The 'exact' age of a fossil determined by radiometric dating

• The relative age of a fossil determined by radiometric dating

• Younger rock layers sit on top of older rock layers

• Older rock layers sit on top of younger rock layers

Tags

NGSS.MS-ESS1-4

The most widely accepted theory about what contributed to the mass extinction that ended the Mesozoic Era is:

• Pangea

• Earthquake

• an asteroid impact near modern day Mexico

• Relative Age Dating

The following image shows a distrubance in the sedimentary rock layer.

• Instrusion

• Fault

• Folding

• Unconformity

Dinosaurs, small mammals, and birds are found in this time period

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

a model scientists use to describe the timing of events and the relationships between those events in earth’s history.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

A trend we see in the geologic time scale is that fossils become more ______ over time.

• complex

• simple

• heavy

• purple

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2