Download Chapter 15 Outline

Name: ____________________________Date: _______________Period: ________
Chapter 15 Outline
I.
II.
III.
Inside the Earth
A. Composition of the _______________
1. Divided into __________ _____________
a. ________________
b. Mantle
c. ________________
2. Crust
a. Outermost
b. ______to _______km thick
c. Two types of __________: continental and _____________
3. Mantle
a. Between the _________ and ___________
b. Contains most of the Earth’s _____________
c. No one has ever been to the _____________
4. _____________
a. Center of the _____________
b. Mostly ____________ and _____________
B. Physical _____________ of the _________________
1. ___________ physical layers
2. Lithosphere: Divided into pieces called ____________ ___________
3. Mesosphere
4. ____________________: made of solid ____________ that moves very slowly
C. Tectonic Plates
1. __________ of the lithosphere
2. All of them have a ______________
3. Oceanic crust is ______________ than Continental crust
D. Mapping the Earth’s ________________1. ____________waves travel at different ____________depending on the
_________________and ______________ of material they pass through
2. Scientists can use this information to calculate what the Earth is made of
Restless Continents
A. Wegener’s ____________ _____________ _______________
1. Hypthesis of __________ ____________________
2. One _________________ called Pangaea
3. Evidence includes how continents fit together and _________________
B. Sea-floor Spreading
1. Mid-ocean _________________
a. Where sea-__________________ spreading takes place
b. Tectonic plates move ________________ from each other
c. Magma rises and forms new _________________________
Theory of ______________ _______________________
A. Earth’s lithosphere is divided into _________________ __________________
B. Types of ________________________
1. Convergent boundaries
a. When two plates ____________________
b. Three Types: oceanic-oceanic, continental-______________, continentalcontinental
c. Continental-continental form mountains
d. Oceanic-Oceanic causes a ________________ ____________________
e. Continental-oceanic also causes a ________________ _______________
2. Divergent Boundaries
a. When two plates _____________________
b. New _____________ ________________ forms
c. _____________- __________________ ridges
3. Transform Boundaries
a. When two plates ____________ ______________ ___________ ________
b. Example ____________ ______________ in California
c. Cause _______________________
4. Causes of ____________ Plate Motion
a. Ridge Push: ______________________________________________
b. Convection: ______________________________________________
c. Slab Pull: ________________________________________________
Questions:
1.
2.
3.
4.
5.
6.
7.
8.
How fast do tectonic plates move per year on average? (p.
407)___________________________________________
What is evidence Wegener used to support his hypothesis? (p. 400)
________________________________________________
How do scientists know what the inside of the Earth is like if we can’t dig into it? (p.
398) ____________________________________________
Which layer of the Earth is the most dense? ______________________
Which type of crust is thinner? _______________________
Which layer of the Earth contains iron and nickel? _________________
Which type of boundary do you think formed the Appalachian Mountains?
_____________________________________
Tennessee has three fault lines that are nearby. This is information about the most
recent earthquakes in Tennessee:
Magnitude
Date
Location
2.3
2014/09/28
12 km ( 7 mi) ESE of Mascot, TN
1.7
2014/09/27
9 km ( 5 mi) SSE of Vonore, TN
1.7
2014/09/25
15 km ( 9 mi) SSW of Tellico Plains, TN
2.5
2014/09/20
5 km ( 3 mi) NNE of Sweetwater, TN
What does this tell you about Tennessee’s geologic stability? If you buy a house in
one of these locations, do you think you need earthquake insurance (which is not
standard in normal homeowner’s insurance)? Why or why not?
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