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 type of fossil provides evidence of the activities of ancient organisms; examples include marks left by footprints or tails

• mold
• carbon film
• trace
• cast

this material does an excellent job of preserving insect remains

• cast
• amber
• mold
• carbon film

a scientist who studies fossils

• geologist
• biologist
• paleontologist
• chemist

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

• trace fossil
• extinct
• preserved
• paleontologist

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

Fossils of fish are found under land where cows now live. What does this tell you?

• the fish were dropped their by flying birds
• this land was once under the ocean
• farmers fed the fish to the cows
• fish used to live on land