Intrusive vs. Extrusive Lab
Task #1:
Name:_____________________
Extrusive vs. Intrusive Rocks
Sort your rocks into groups based on whether they formed INTRUSIVELY or EXTRUSIVELY.
Group 1: INTRUSIVE IGNEOUS ROCKS
Group 2: EXTRUSIVE IGNEOUS ROCKS
Take a Photograph & identify ONE of your
intrusive samples:
Take a Photograph & identify ONE of your
extrusive samples:
Sample Name: ______________________________
Sample Name: ______________________________
Take a Photograph:
Take a Photograph:
Describe what characteristics your samples have
in common.
Describe what characteristics your samples have
in common.
Explain what characteristic(s) you can use to help identify if an igneous rock is intrusive or extrusive.
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Task #2:
EXTRUSIVE IGNEOUS ROCKS, Porous vs. Smooth
1. Take ONLY the EXTRUSIVE igneous rocks for this sort.
2. Sort the rocks into 2 groups: ONES THAT ARE POROUS vs. ONES THAT ARE NOT POROUS
3. Why do you think even though all of the rocks were extrusive, some are more porous?
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Group 1: Porous
Group 2: Non porous
Take a photograph of ONE rock you placed in
this group.
Take a photograph of ONE rock you placed in
this group.
Identify (name) the rocks that are porous.
Identify (name) the rocks that are not porous
Task #3:
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Igneous Rock Research
Record your observations about each sample set.
AFTER, you have recorded your observations, use your iPad to find 3 facts about each type. You
may use Geology.com or other websites to research. Use words that you understand in your facts.
Sample 1: Pumice
______ Extrusive ______ Intrusive
Sample 2: Obsidian
______ Extrusive ______ Intrusive
Photograph:
Photograph:
Research:
Research:
Sample 3: Granite
______ Extrusive ______ Intrusive
Sample 4: Scoria
______ Extrusive ______ Intrusive
Photograph:
Photograph:
Research:
Research: