1. Review Chapter 3 – Earth’s Structure
Name: _______________________________
Period: _______
Label Figure 1with A, B, etc..by selecting from the list below.
_______
_______
Mantle
Mesosphere
Core
Lithosphere
Crust
Asthenosphere
_______
_______
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Figure 1
What changes occur with depth into the Earth? ________________________________________________________________________________________________________________________________________________
What metals are present in the Core? __________________________________________________________________________________________________________________________________________________
In the outer, liquid layer of the Core circulation of this metal believed to create Earth’s magnetic field (circle the correct answer).
A. Iron B. Nickel C. magma D. Silicate
The outer Core remains liquid due to the (circle the correct answer).
A. temperature B. corn starch C. pressure D. water content

2. The asthenosphere moves because of heat transfer by ___________________________ that sets up currents.
Describe the asthenosphere’s physical properties: ______________________________________________________________________________________________________________________________________________________
Describe the mesosphere physical properties: _________________________________________________________________________________________________________________________________________________________________________________________________________________________________
What metal is abundant in the Crust? ___________________________________
Silicates are abundant in the Crust and are compounds made up of silicon, _______________, and another element.
Which layer makes up 82% of the Earth’s volume? (circle the correct answer):
A. crust B. mantle C. core D. lithosphere
Describe the lithosphere, what layers of the Earth does it contain? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________
How does Oceanic Crust differ from Continental Crust? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________
From which layer of the Earth does the “magma” that feeds volcanoes come? (circle the correct answer):
A. asthenosphere B. mantle C. core D. lithosphere
The study of earthquakes and seismic waves that move through and around the earth is called __________________________________.

3. What type of seismic wave is shown below
When a wave passes from one media into another encountering a change in density and is bent (changes direction). This property is called: __________________________________________________________________________
A person who travels to exotic places and blows things up while researching P & S waves is called? ___________________________________________________________________________
The energy released by an earthquake is sensed and recorded by this instrument _____________________________________________________________________

4. What is happening to the S waves shown below and what does this tell us about the outer layer of the Earth’s core? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Core
The “Moho” is the chemical boundary between which 2 layers of the Earth? ______________________________________________________________________________________________________________________________________________________
What was the significant outcome of the Molehole Project? ___________________________________________________________________________
A shadow zone that occurs during an eatthquake is a region on the Earth’s surface where (circle the correct answer):
A. light is not detected
B. only P waves are detected
C. only S waves are detected
D. no seismic waves are detected.