Download Layers of the Earth (Notes 1/5)

Unit 3: Plate Tectonics Vocabulary
(use both the red textbook and your phone if necessary)













Inner core
Mantle
Outer core
Crust
Protoplanet
Protoplanet hypothesis
Asthenosphere
Epicenter
Composite volcano
Mid Ocean Ridge
Basalt
Granite
Pangaea












Converging boundary
Diverging boundary
Transform boundary
Subduction
Fault
Lithosphere
Plate tectonics
Spreading centers/Sea Floor
Spreading
Earthquake
Seismic Wave
Sill & Dike
Rift Valley
I. EARTH’S ORIGIN &
STRUCTURE
A. Origin Facts
1. All the planets revolve in the same direction
around the sun.
2. The path of the planets are elliptical.
3. The planet paths are nearly in the same plane
(flat surface.)
4. Most of the planets have moons
B. Protoplanet Hypothesis
1. Great ball of dust and gas slowly rotates in
space.
2. Gravity compressed the ball.
3. The compression made the ball rotate
faster, & the compressed material reacted
into a hot core (Sun.)
4. Material around the ball compacted into
masses called protoplanets.
C. Origin of the Oceans &
Atmosphere
1. Oceans: volcanoes produced gas vapor that
condensed into the oceans
2. Atmosphere: Sunlight broke up water
molecules into oxygen, & volcanoes released
gases.
a.) green plants also add Oxygen through
photosynthesis.
D. Structure of the Solid Earth
Structure of the
Solid Earth
?
Crust:
(10Km
Thick at
ocean
basin,
65Km at
mountain
top)
Outer Core:
(2250 Km thick)
Mantle:
(2900KM
thick)
Inner
Core:
(1200Km
thick)
1. Crust: solid rock, includes dry and wet land.
a. Continental crust- made of granite
b. Oceanic crust- made of basalt (more dense than
granite).
2. Mantle: hot & solid rock
a. Lithosphere: Upper, rigid part of the mantle
b. Asthenosphere: Middle, soft layer of the
mantle
3. Core: made up of mostly metals, very hot!
a. outer core: liquid metal
b. inner core: solid, dense metal
Seismic waves
 Waves travel at
different speeds
through liquids &
solids. (Also different
types of minerals)
Meteorite
 Show similar
metals to what
we believe the
core is made of!
CBA: Journey to the Center
of the Earth Textbook Time
Use the red textbook to answer the following
questions:
 Pg. 130: “Analyzing Data” 1-4
 Pg. 131 #’s 1 & 2 all
 Pg. 135 #’s 1-3 all
 GET A STAMP WHEN COMPLETE!