Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION
TO EARTH SCIENCE
ESCI 121
Section 05
Spring 2009
Daily
Objectives #4
(January 22, 2009)
Dr. Sanders
By the end of today's class, you should be able to do the following:
Density and Earth's Structure:
w Review the rock
density measurements we made in class last time.
w Review the
descriptions and density measurements
you made for the four rocks in the last class. Tell what patterns, if any, you
see. In what ways are the rocks similar to each other? In what ways are they
different? Note: we don't yet know what these rock types are,
but the differences you observed here will become important soon--so hang on to
this information!
w
List the two major types of Earth's crust and
describe them in terms of their density and thickness. Tell which type
comprises continental mountain ranges, and which type is found below the ocean
waters, and why.
w Review:
"Finding patterns" from last time.
w
Geotectonics: Add one more piece to the puzzle of our 14 study sites:
tectonic plate boundaries.
w Get
ready to Rock Your State! Homework #4 is due one week from today. Be
sure you have signed up for a state on the class wiki, and get clear on what is
expected of you in this assignment.
© 2009 Laura L. Sanders. Last updated January 22, 2009.