Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION TO EARTH SCIENCE
ESCI 121
Spring 2006
Daily Objectives #10 (February 16, 2006)
Dr. Sanders
By the end of today’s class, you should be able to do the
following:
* Explain the relationship between cooling rate and crystal size.
* Define and describe what is meant by the terms plutonic
and volcanic
as they apply to igneous rocks.
* Define and describe what is meant by the terms intrusive
and extrusive
as they apply to igneous rocks.
* Define and describe what is meant by mafic and felsic
mineralogic compositions of igneous rocks.
* Use a rock key to identify hand samples of
igneous rocks.
© 2006 Laura L. Sanders. Last updated
February 16, 2006.