NAME: ________________________

Chapter 20 & 21 Test

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of 21 available terms

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5 Written Questions

5 Matching Questions

  1. rock
  2. relative dating
  3. cementation
  4. clasts
  5. porosity
  1. a the process of placing objects or events in their proper sequence in time
  2. b empty spaces between particles
  3. c the process in which minerals slowly precipitate out of water and fill in the spaces between clasts
  4. d naturally formed, consolidated mixture containing minerals, rock fragments, or volcanic glass
  5. e small bits and pieces of other rocks in a rock

5 Multiple Choice Questions

  1. a gap in the rock record during which erosion occured or deposition was absent
  2. rock that cools from magma
  3. the remains or traces of organ isms found in geologic record
  4. an idea which states that the laws of nature operate today as they have in the past
  5. a rule stating that the oldest rocks in an undisturbed sequence of rock layers will be at the bottom of the sequence.

5 True/False Questions

  1. texturean uneven break in a mineral


  2. mineralnaturally occuring element or compound that is inorganic, solid, and has crystalline structure


  3. foliatedthe remains or traces of organ isms found in geologic record


  4. absolute datingthe process of assigning a precise numerical age to an organism, object, or event


  5. hardnessthe color of a mineral in powdered form


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