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5 Written questions

5 Matching questions

  1. eon
  2. altered remains
  3. geologic time scale
  4. absolute age
  5. trace fossils
  1. a the largest division of time in the Geologic Time Scale EX: Phanerozoic
  2. b a vertical timeline representing events in Earth's history. It is divided into blocks of time that represent great changes in Earth's biodiversity
  3. c the numeric age of a layer of rocks or fossils. It can be determined by using radiometric dating
  4. d tracks, trails, burrows, boring, nests
  5. e fossils changed structurally or chemically; minerals may seep into the pores or cavities of an organism's bones, teeth, and shells

5 Multiple choice questions

  1. the animals of a given region or period
  2. fossil retains the organism's original structure and composition; it remains unchanged (EX: complete insect in amber
  3. sand or other minerals fill the cavity-shaped mold and then harden over time, a replica of the original organism forms
  4. parts of organisms that remain intact after the soft organic materials have decomposed. EX: teeth, shells, skulls, skeletons
  5. the impressions of soft-bodied animals are left after the animals are covered by sediment

5 True/False questions

  1. radiometric datinga method used to determine the absolute age of a rock by sing the rock's chemistry


  2. relative agethe age of a rock layer, or the fossils it contains, compared to other layers


  3. fossilsthe preserved remains or impressions of organisms from Earth's geological past.


  4. Law of superpositionthe third largest division of time in the Geologic Time Scale EX: Cretaceous


  5. fossil recordsall of the fossils that have existed throughout Earth's history, wether they are in the ground or are in a museum


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