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Video:  Rocks that form Underground

1.    How do Geologists unravel the history of a rock?

2.    what is a crystalline substance?

3.    What is cleavage?

4.    What is the difference between a solid, a liquid and a gas?

5.    What effect does the rate of cooling have o the formation of crystals in a material?

6.    What are the characteristics of an igneous rock?

7.    How does a glass form?  Give an example of an igneous rock that is a glass.

8.    To produce visible crystal surfaces, what conditions are necessary?

9.    If an igneous rock has large crystals visible without magnification, where did this
       rock form (on or near the surface of the earth or at depth)?

10.   What is a plutonic rock?  What are the characteristics that indicate a rock is
        plutonic?

11.   Characterize the crystalline structure of an igneous rock.  Are the crystals
        arranged in a random or preferred orientation?

12.   If a rock has a fine-grained texture, under what conditions did this rock
        probably form?  What is a volcanic rock?

13.   Can a volcanic rock have crystals that are large enough to see with the naked eye?
        If so, how did this rock form?

14.   What do you think the porosity and permeability of igneous rocks will be?
        Will there be directional differences in strength?

15.   What are the characteristics that may allow the identification of a rock as a
        metamorphic rock?

16.    How do the properties of an igneous rock differ from a metamorphic rock?

17.    Under what conditions do metamorphic rocks form?

18.    Describe how one rock gives rise to another.

19.   What do you think the porosity and permeability of metamorphic rocks will be?
        Will there potentially be directional differences in strength?  What is foliation?