Tuesday, May 3, 2011

Earth Science HW

1) Read and take notes for ch 6:  Sedimentary & Metamorphic rocks, pg 120-139.

2)  Finish analysis and conclusion for igneousd rock identification lab into notebook

How do Igneous Rocks Differ?

Task:  Compare & contrast the different characteristics of igneous rock.

  1. Using the igneous rock samples provided, carefully observe the following characteristics of each rock:
    1. Color(s)                       d.    Hardness
    2. Grain size                    e.    Streak test
    3. Texture                                    f.     Density (?)
  2. Design a data table in your notebook to record your observations/data.

Analyze & Conclude:
  1. Classify your rock samples as extrusive or intrusive.
  2. What characteristics do the extrusive rocks have?  How do they differ?
  3.                                       “ intrusive rocks ”                                      
  4. Classify your rock samples as felsic, intermediate, mafic or ultramafic.
  5. What are the names of the samples you examined?
  6. Include drawings of the rock samples.

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