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Sedimentary Rock Classification (Grade 7)

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Sedimentary Rock Classification

1. 
Sedimentary rocks can be classified as clastic, chemical, or organic.
  1. True
  2. False
 
2. 
A chemical sedimentary rock is formed when:
  1. Mechanical weathering occurs.
  2. There's an accumulation of plant or animal debris.
  3. Dissolved materials precipitate a solution.
  4. None of the above.
3. 
Clastic sedimentary rocks are formed when:
  1. There's an accumulation of plant or animal debris.
  2. Dissolved minerals precipitate a solution.
  3. Mechanical weathering occurs.
  4. None of the above
 
4. 
An organic sedimentary rock is formed when:
  1. Dissolved materials precipitate a solution.
  2. There's an accumulation of plant or animal debris.
  3. Mechanical weathering occurs.
  4. None of the above.
5. 
An example of a clastic sedimentary rock is:
  1. Sandstone
  2. Iron Ore
  3. Gabbro
  4. Slate
 
6. 
Which kind is an organic sedimentary rock?
  1. Conglomerate
  2. Slate
  3. Obsidian
  4. Coal
7. 
An example of a chemical sedimentary rock is:
  1. Coal
  2. Gneiss
  3. Scoria
  4. Halite
 
8. 
A kind of chemical sedimentary rock
  1. coal
  2. limestone
  3. slate
  4. marble
9. 
A detrital rock is named according to
  1. its age
  2. its location
  3. the shape and size of the sediments
  4. the color of the sediments
 
10. 
Category of sedimentary rock characterized by chemical precipitation. Formed by evaporation or interactions with supercritical fluids. Salt (NaCl) is one example.
  1. diagenesis
  2. felsic
  3. clastic
  4. mafic
  5. evaporite
  6. cleavage
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