Fossils and Evolution

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

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

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a scientist who studies fossils

• geologist
• biologist
• paleontologist
• chemist

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

• trace fossil
• extinct
• preserved
• paleontologist

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

• index fossils
• fossil
• mold
• cast

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Which animal part would MOST LIKELY form a fossil?

• fur
• lung
• bone
• muscle

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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

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In which kind of rock do we usually find a fossil?

• sedimentary  rock
• rock candy
• hard rock

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Scientist find dinosaur fossils in the bottom of a cliff and mammals fossils in the middle layer, what can be inferred?

• dinosaurs ate plants
• dinosaurs were eaten by the mammals
• they lived at the same time
• dinosaurs lived before the mammals

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Dolphins have the same arm structure as wolves, what type of evidence for evolution does this represent?

• DNA
• vestigial structures
• homologous structures
• embryology

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Why do scientists study embryos?

• to see if they are related
• to understand adaptations
• to determine the age
• to learn who the parents are

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