Act Science

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Act Science - Quiz

DIRECTIONS: There is only one passages in this test. Thepassage is followed by several questions.


Questions and Answers
  • 1. 
  • 2. 
    According to Figure 2, which of the following minerals would most typically be found only in rocks of a medium grade?
    • A. 

      Muscovite

    • B. 

      Biotite

    • C. 

      Kyanite

    • D. 

      Plagioclase

  • 3. 
    According to Figure 1, a Facies G rock will most likely form under which of the following pressure and temperature conditions? Pressure Temperature
    • A. 

      3 kb 800°C

    • B. 

      5 kb 400°C

    • C. 

      8 kb 1,000°C

    • D. 

      11 kb 600°C

  • 4. 
    Figure 1 indicates that as depth increases, pressure:
    • A. 

      Decreases only.

    • B. 

      Remains the same.

    • C. 

      Increases only.

    • D. 

      Increases, then decreases.

  • 5. 
    According to Figure 2, the presence of which of the following minerals in a metamorphic rock would be least helpful in determining that rock’s grade?
    • A. 

      Chlorite

    • B. 

      Muscovite

    • C. 

      Staurolite

    • D. 

      Plagioclase

  • 6. 
    Hornfels is a metamorphic rock formed when magma (molten rock) heats sedimentary rocks on Earth’s surface. According to Figure 1, hornfels is most likely a member of which of the following facies?
    • A. 

      Facies A

    • B. 

      Facies C

    • C. 

      Facies E

    • D. 

      Facies G

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