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- 1. Multiple ChoiceWhich of the following could form a fossil?BoneShellSeedsAll of the above
- 2. Multiple ChoiceMost fossils form when organisms that die become buried in sedimentsTrueFalse
- 3. Multiple ChoiceWhich of the following is true about molds and castsA mold forms when hard parts of an organism buried by sediments are gradually dissolvedA mold that becomes filled in with hardened materials forms a castA cast is a copy of the shape of an organismAll of the above
- 4. Multiple ChoiceThe formation of any fossil is a common eventTrueFalse
- 5. Multiple ChoiceBy determining the age of fossils, scientists can reconstruct the history of life on EarthTrueFalse
- 6. Multiple ChoiceIn what way can scientists determine the ages of fossils?relative datingradioactive datinglaw of superpositionAll of the above
- 7. Multiple ChoiceIn layers of sedimentary rock, the _________ layer is usually at the bottom. Each higher layer is _________ than the layers below it.oldest, youngeryoungest, olderyoungest, youngeroldest, older
- 8. Multiple ChoiceRelative dating can only help scientists determine whether one fossil is older than another.TrueFalse
- 9. Multiple ChoiceScientists use unstable elements that decay, called _________ elements, to determine the actual age of a fossil.radioactivecationanionpetrified
- 10. Multiple ChoiceWhat is the half-life of a radioactive element?How old it is when it is middle agedThe time it takes for half of the atoms to decayThe time it takes for half of the atom to formHow old it is when the Earth is middle aged
- 11. Multiple ChoicePotassium-40 breaks down into __________ over timeArgon-40Neon-40Helium-40Radon-40
- 12. Multiple ChoiceThe millions of fossils that scientists have collected are calledThe Geologic Time ScaleThe Origin of SpeciesThe Fossil RecordA really neat fossil collection
- 13. Multiple ChoiceWhat is the largest span of time in the Geologic Time Scale?ErasPeriodsYearsPrecambrian Time
- 14. Multiple ChoiceWhat is NOT a name of one of the three eras on the Geologic Time Scale?JurassicPaleozoicMesozoicCenozoic
- 15. Multiple ChoiceWhat is a mass extinction?the extinction of all of Earth's species at ones timethe extinction of many types of organisms at the same timethe end of daysthe creation of many species at one time
- 16. Multiple ChoiceWhat is the difference between gradualism and punctuated equilibria?Gradualism is slowly but surely and P.E. are rapid changes preceeded followed by long periods of little or no changeP.E. is slowly but surely and Gradualism are rapid changes preceeded followed by long periods of little or no changeGradualism had no intermediate forms of speciespunctuated equilibria has intermediate forms of species
- 17. Multiple Choice
The butterfly diagram on the right refer which model?SelectionGradualismPunctuated EquilibriumAdaptive - 18. Multiple ChoiceWhat is slow change over a long period of time in a species called?Punctuated equilibriumPhylogenyStasisGradualism
- 19. Multiple ChoiceHow do fossils provide evidence that evolution has happened on Earth?Fossils show how the sizes of certain animals has changed drastically over millions of yearsFossils show that some species have gone extinctFossils show how life forms present today are different than those from the pastDifferent sedimentary rock layers provide evidence for how the environment has changed over time
- 20. Multiple ChoiceWhich statement best describes a relationship between these organisms?Organism A was probably more primitive than Organisms B and COrganism A was probably more complex than organism B and CAll of these organisms probably lived at the same time
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