Earth Science: Geologic History Review

Very large division of geologic time; usually referred to as the longest division of time. 

• Era
• Epoch 
• Eon 
• Period

Tags

NGSS.MS-ESS1-4

Subdivision of an eon (Paleozoic, Mesozoic, Cenozoic)

• Era 
• Period
• Epoch 
• Eon 

Tags

NGSS.MS-ESS1-4

Subdivision of an Era

• Era 
• Eon 
• Period 
• Epock

Tags

NGSS.MS-ESS1-4

Subdivision of a period; shortest division of geologic time. 

• Eon 
• Era 
• Period 
• Epoch 

Tags

NGSS.MS-ESS1-4

Method of determining the age based on measuring radioactive elements (radiometric) 

• Radioactive Dating 
• Relative Age 
• Index Fossil 
• Law of Superposition 

Tags

NGSS.HS-PS1-8

Determination of the age of a rock based on the surrounding evidence 

• Radioactive Dating 
• Relative Age 
• Trace Fossil 
• Carbonized Fossil 

Tags

NGSS.MS-ESS1-4

A common fossil found in many areas from a specific time; used to help identify the age of other formations. 

• Trace Fossil 
• Mold Fossil 
• Cast Fossil 
• Index Fossil 

Tags

NGSS.HS-LS4-5

States that younger rock is found above older rock when comparing undisturbed sedimentary rock layers. 

• Law of Thermodynamics 
• Law of Gravity 
• Law of Superposition 
• Murphy's Law

Tags

NGSS.MS-ESS1-4

In order to determine the relationship between fossils, the ages of the fossils need to be determined. Which process will most accurately determine the ages of two similar fossils?

• by using seismic waves

• by using radioactive dating

• by comparing the two fossils to index fossils

• by looking at the geographic locations where the fossils were found

What is the currently accepted age of Earth?

• about 4.6 million years old

• about 10 billion years old

• about 4.6 billion years old

• about 5.6 billion years old

Tags

NGSS.MS-ESS1-4