Fossils

the trace or remains of an organism that lived a loooong time ago, often preserved in sediment

• half-life
• fossil
• geologic time-scale
• evolution

this type of fossil is a mark or cavity made in sediment in the shape of a shell or other body

• cast
• trace
• petrified
• mold

this type of fossil is a mold filled with sediment that creates a solid copy of an organism

• mold
• petrified
• cast
• trace

this material does an excellent job of preserving insect remains

• cast
• amber
• mold
• carbon film

Which of the following is NOT an example of a fossil?

• a petrified dinosaur bone
• a footprint captured in mud
• a seashell found on the beach

a fossil made inside a mold when minerals seeped in and hardens into shapes of the mold

• glue
• resin fossil
• sap
• cast fossil

gone forever. all one kind of a plant or animal dies

• trace fossil
• extinct
• preserved
• paleontologist

What are the remains, imprints, or traces of once-living organisms?

• index fossils
• fossil
• mold
• cast

Why do bones and teeth remain as part of some fossils?

• they are white
• bones are large
• the parts are hard 
• bones decay easily

Which animal part would MOST LIKELY form a fossil?

• fur
• lung
• bone
• muscle