Igneous Review
Name: __________________
Period: _____________
1. Where is magma found? _____________________
2. Where is lava found? ___________________
3. What are the 3 sources of heat that can melt rock?
a. _________________________
b. _________________________
c. _________________________
4. What 2 things are used to classify igneous rocks?
a. _________________________
b. _________________________
5. Why is the inner core of the Earth solid?
________________________________
6. Texture is “measured” by ______________ size.
7. Define differentiation.
____________________________________________________
____________________________________________________
____________________________
8. Where do we find extrusive igneous rocks?
__________________________
9. Where do we find intrusive igneous rocks?
__________________________
10.
What is the most difficult igneous rock to find on the surface
of the Earth? ________________
11. Be able to determine cooling rates, crystal sizes, and grain size for all
8 igneous rocks.
Cooling
Slowly
_________
_________
slowly then quickly





Crystal size
_________
small
_________
_________





Grain size
____________
____________
glass
____________
12. Be able to read the following chart to determine at what temperature a
mineral will melt completely or completely crystallize.
13. At what temperature would biotite completely melt? ___________
14. In a cooling magma chamber, which mineral would solidify (become solid)
first? _____________
15. List all of the mineral found in the top of the magma chamber.
________________________________________________________
16. What is the melting temperature range for pyroxene?
______________________