Term
| four main charectoristics of minerals: |
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Definition
solid
inorganic
naturally ocurring
definite chemical structure |
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Term
| mineral properties include: |
|
Definition
chrystal structure
luster
streak |
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Term
| how is density determined |
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Definition
| weight/ how much water it displaces |
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Term
| where is the best place to find minerals? |
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Definition
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|
Term
mineral density
can range from... |
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Definition
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Term
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Definition
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Term
|
Definition
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Term
| a combination of different materials forms a ..... |
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Definition
|
|
Term
| how many minerals are know to man? |
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Definition
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Term
| what are the three main groups of rocks? |
|
Definition
igneous
sedimentary
metamorphic |
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|
Term
| how do igneous rocks form? |
|
Definition
|
|
Term
| how do metamorphic rocks form? |
|
Definition
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|
Term
| how do sedimentary rocks form? |
|
Definition
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Term
put in order:
ages,eras, periods, eons, epochs |
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Definition
eons
eras
periods
epochs
ages |
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Term
| how are boundaries set between eachof the divisions in geological time? |
|
Definition
set by major events
preserved in the rock
record. |
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Term
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Definition
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Term
| when are the two major extinction events? |
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Definition
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Term
| how long is the cenozoic era compared in length with the other eras? |
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Definition
| it was much shorter. a short period of time compared with the geological time scale. |
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Term
| in what direction do rock layers form? |
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Definition
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Term
| what do scientists use to date rock layers? |
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Definition
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Term
| if radioactive minerals are found in a rock layer then the ________ of the layer can be determined |
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Definition
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Term
| what materials make up sand |
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Definition
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Term
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Definition
| shows the layers of soil. |
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Term
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Definition
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Term
| how deep is the continental crust? |
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Definition
|
|
Term
| how deep is the oceanic crust? |
|
Definition
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Term
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Definition
| a crack in the earths crust |
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Term
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Definition
| any seismic event that generates waves |
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Term
| what causes seismic waves |
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Definition
| the rupture of a geological plate. |
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Term
| what are two major sections of a volcano |
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Definition
|
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Term
| describe a shield volcano. |
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Definition
| flat, not very big in height, biggest in width. |
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Term
| describe a cinder cone volcano |
|
Definition
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|
Term
|
Definition
| average volcano, composite. |
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