Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION
TO EARTH SCIENCE
ESCI 121
Section 05
Spring 2009
Daily
Objectives #6
(January 29, 2009)
Dr. Sanders
Rock
Your State!
Homework #4 is due
today.
By the end of today's class, you should be able to do the following:
Geotectonics and Earth Structure
w
Review: Review the "plate boundary" information we added to the list
of characteristics of our 14 study sites:
Japan
Hawaii
San Francisco, California
Yellowstone National Park
India/Tibet border New Zealand
Iceland The Red Sea
Lake Tanganyika Aleutian Islands
Chile Jakarta, Indonesia
Azores Islands Galapagos Islands
w Review: Describe
the differences between the two kinds of crust in terms of thickness, density
and overall color of the major kind of rock that occurs there, and where on
Earth the two types of crust occur.
w Describe
the difference between brittle deformation and ductile
deformation.
w Explain
the meaning of lithosphere and asthenosphere.
w Sketch a diagram
of the internal structure of the Earth, showing the following features, to
scale: continental crust, oceanic crust, mantle,
core.
w On the diagram
you sketched, show the following layers, to scale: lithosphere and asthenosphere.
Minerals and Rocks
w Explain
the difference between minerals and rocks.
w Demonstrate that you can correctly use
the following tools for "what scratches what" mineral sample exploration: hand
lens, hardness testing implements (glass, steel file, penny, fingernail).
w Arrange a suite of minerals into three
groups based on their densities: high, medium, and low.
w Arrange a
suite of minerals into groups according to their hardness, relative to the
hardness testing implements.
w Assign
Mohs hardness
scale numbers to the hardness groups you arranged.
© 2009 Laura L. Sanders. Last updated January 28, 2009.