Fossils

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

• cast
• mold
• original remains

Formed when original material in skeletal remains are replaced by minerals 

• original remains 
• fossil
• permineralized remains 

Remains, imprints or traces of once-living organisms

• water
• superposition
• fossils 

Which type of rock can contain fossils?

• Metamorphic

• Stereosonic

• Sedimentary

• Igneous

What type of fossil is pictured here?

• Mold fossil

• Trace fossil

• Cast fossil

• Body fossil

What type of fossil is pictured here?

• Mold fossil

• Trace fossil

• Cast fossil

• Body fossil

What type of fossil is pictured here?

• Forest fossil

• Trace fossil

• Cast fossil

• Body fossil

Which conditions might lead to fossil formation? (Choose 3)

• Decomposition

• Getting buried quickly by sediment

• getting trapped in a tar pit

• getting eaten by another animal

• making a footprint in mud

What is a good rule to follow when determining the age of rock layers?

• The oldest is always on the top.

• The rock layers get older as you dig deeper.

• The layers position does not necessarily tell you about the age.

• The youngest is always on the bottom.

a scientist who studies fossils

• geologist
• biologist
• paleontologist
• chemist