Geologic Timeline

Gaps in rock records made when agents of erosion remove existing rock layers 

• fossils
• unconformities
• permineralized remains

Tags

NGSS.MS-ESS2-2

Correctly sequence the layers of rocks oldest to youngest 

• A,B,C,D
• D,C,B,A

Tags

NGSS.MS-ESS1-4

Correctly sequence the layers of rocks oldest to youngest 

• C,E,D,A,B
• C,E,D,A,B
• C,E, D,B,A

Tags

NGSS.MS-ESS1-4

Principle that states in a sequence of undisturbed rocks, the oldest rocks are on the bottom and the rocks become progressively younger toward the top 

• superposition 
• uniformitarianism
• half-life

Tags

NGSS.MS-ESS1-4

Produced when sediments fill in a cavity made when an object decayed 

• cast
• mold
• original remains

Tags

NGSS.MS-LS4-1

Cavity in a rock made when an organism decayed

• cast
• mold 
• original remains

Correctly sequence the layers of rocks oldest to youngest 

• A,D, C, B, E
• E, B,C D, A
• B,E,C, D, A

Tags

NGSS.MS-ESS1-4

Which type of rock can contain fossils?

• Metamorphic

• Stereosonic

• Sedimentary

• Igneous

Tags

NGSS.MS-LS4-1

What type of fossil is pictured here?

• Mold fossil

• Trace fossil

• Cast fossil

• Body fossil

Tags

NGSS.MS-LS4-1

What type of fossil is pictured here?

• Forest fossil

• Trace fossil

• Cast fossil

• Body fossil