Transcript Layers of the Earth

9
Layers of the Earth Notes
Layers of the Earth Notes
8/31/15
8/31/15
EQ: What are the names and
locations of the main structural
layers of the Earth?
Starter
Describe what this may
remind you of
Practice: Discussion:
Application/Connection/Exit:
Start Foldable
10
9/2/14
AGENDA
Objective 6.10 A
Build a model to
illustrate the
structural layers of
Earth, including the
inner core, outer core,
mantle, crust,
asthenosphere, and
lithosphere
1 Starter
2. Notes/Foldable
Table of Contents
Date
Lecture/ Activity/ Lab
8/28 Syllabus /Notebook Guidelines
8/28
Periodic Table/ Formula
8/28 Language Scripts and Quickwrites
8/28
Lab Report/ Safety Equipment
8/31
Layers of the Earth Notes
Page
1-2
3-4
5-6
7-8
9-10
9
Layers of the Earth Notes
Layers of the Earth Notes
8/31/15
8/31/15
EQ: What are the names and
locations of the main structural
layers of the Earth?
Starter
Describe what this may
remind you of
Practice: Discussion: With a
partner: Think of some other
ways model the layers of the
Earth
Application/Connection/Exit:
Start Foldable
10
Earth’s Layer’s Notes
Color the four layers using this guide:
Ocean- blue
Continental crustlight brown
Oceanic crust- dark
brown
Upper mantle- yellow
Middle mantle- light
orange
Lower mantle- orange
Outer Core- redorange
Inner core- Red
The Earth is composed of
Four different layers.
1.
The crust is the layer that you live on, and it is the most
widely studied and understood.
2. The mantle is much hotter and has the ability to flow.
3.
The outer core and inner core are even hotter with
pressures so great you would be squeezed into a ball smaller
than a marble if you were able to go to the center of the
Earth!
The Crust
The Earth's Crust is like the skin of an apple. It is
very thin in comparison to the other three layers.
Composition: made of granite and basalt
State of matter: Solid rock
The Crust
Continental Crust:
Thickness: 30-70 km
Composition: Granite
State of matter: solid rock
Oceanic Crust:
Thickness: 8 km
Composition: Basalt
State of matter: Solid rock
The Crust: Lithosphere
The crust and the upper layer of the mantle
together make up a zone of rigid, brittle rock
called the Lithosphere.
The crust of the Earth is broken into many
pieces called plates. The plates "float" on the
soft, semi-rigid asthenosphere.
The Mantle
The Mantle is the largest layer of the Earth. It
makes up the biggest part of Earth’s mass.
Composition: Made of dense, iron-rich minerals
(Fe, Mg, Ca, Si, & O)
Temperature: 1000°C
State of matter: Plastic, solid
(Flows like tar)
Thickness: 2900 km
The Mantle:
Asthenosphere
•The asthenosphere is the semi-rigid part of the
middle mantle that flows like hot asphalt
•The movement of the middle mantle
(asthenosphere) is the reason that the crustal
plates of the Earth move.
Convection Currents
The middle mantle "flows"
because of convection
currents. Convection
currents are caused by the
very hot material at the
deepest part of the mantle
rising, then cooling and
sinking again --repeating this
cycle over and over.
The Outer Core
The Outer Core a hot, dense ball of liquid
metals.
Composition: Made of Nickel and Iron
Temperature: 3700°C
State of matter: Liquid
Thickness: 5100 Km
The Inner Core
The inner core of the Earth has temperatures and
pressures so great that the metals are squeezed
together and forced to vibrate in place like a solid.
Composition: Made of Iron
Temperature: 4300°C
State of matter: Solid
Thickness: 6378 km
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Layers of the Earth Notes
Layers of the Earth Notes
8/31/15
8/31/15
EQ: What are the names and
locations of the main structural
layers of the Earth?
Starter
Describe what this may
remind you of
Practice: Discussion: With a
partner: Think of some other
ways model the layers of the
Earth
Application/Connection/Exit:
Start Foldable
10