Download LAYERS OF THE EARTH

LAYERS OF THE EARTH
BELLRINGER
List
all four layers of the
Earth.
Which layer of the Earth
do we live on?
HOW MANY LAYERS ARE THERE?
There are four layers
of the Earth
 These four layers
are:
- the crust
- the mantle
- the outer core
- the inner core

INTRODUCTION TO THE EARTH

http://animoto.com/play/IBukaX921hRDqMfxe
R2VXA
VOCABULARY FLIP CHART – RIGHT SIDE!
Crust- the thin outermost layer of the Earth that we
live on top of.
 Mantle- the largest layer of the Earth that is made
up of rock and magma. The mantle is constantly
circulating.
 Outer Core- Made up of liquid Iron, and very dense.
 Inner Core- Solid Iron, the densest part of the Earth.
1,000 hotter than the sun.
 Lithosphere- includes the Earth’s crust and the top
of the mantle, made up of solid rock. Includes the
Earth’s plates.
 Asthenosphere- includes the rest of the Mantle that
is made up of magma which is solid and liquid rock.
Where the mantle’s circulation takes place.

CRUST
The crust is the
thin, outermost
layer of the
Earth
 It is similar to
the peel of an
apple in the
sense that it is
thin and covers
the outside of
the Earth

MANTLE
-Hard,
solid rock and liquid magma circulate around in
the mantle.
-This circulation moves tectonic plates and triggers
Earthquakes and Volcanoes!
-The mantle is the largest layer of the Earth
OUTER CORE
-Made up of
liquid metal
and liquid Iron
-Extremely hot
but not as hot
as the inner
core.
INNER CORE
-1,000 times
hotter than
the sun.
--Extremely
dense and
solid.
--You have now
made it to the
center of the
Earth!
LITHOSPHERE
 The
cold, rigid, brittle lithosphere is
made of crust and the uppermost part
of the mantle. Plates are made of
lithosphere.
ASTHENOSPHERE
 The
warm, plastic asthenosphere
underlies the lithosphere.
LITHOSPHERE / ASTHENOSPHERE
DEPTH OF THE LAYERS – LEFT SIDE ! !
Depth
Layer
Sphere
Composition
0-30 km
Crust
Lithosphere
Solid Rock
30-100 km
Mantle
Lithosphere
Solid Rock
100-250 km
Mantle
250-2900 km
Mantle
2900-5150
km
Outer Core
Asthenosphere Molten Rock
(Magma)
Solid Rock
Molten
(liquid)
Iron/Metal
CANDY BAR EARTH





1. Unwrap the cold taffy and try to bend it. What
happens?
2. Unwrap the warm taffy and try to bend it. What
happens?
3. Look at the picture of Earth's layers on p. 2.
4. Which better represents Earth's lithosphere, the cold
or the warm taffy? _____________
Explain.


5. Which better represents the asthenosphere?
____________


Explain.
HIGHER-ORDER QUESTIONS – PENCIL TALK
Q:
What is the difference
between Earth’s outer and
inner cores?
Q: Where have you seen
evidence of the movement of
Earth’s plates?
UNIT PROJECT – DUE NEXT MONDAY
Earth’s
Changing
Surface:
Unit Project Assignment
WHAT DOES CRUST LOOK LIKE?

A lot of the crust is hard to see because it is
covered by soil, rock and water
CRUST!!!!
ROCKS
Anywhere you can
see rock, you are
seeing the crust of
the Earth!!!
 There are three types
of rocks you need to
know:
- igneous rock
- sedimentary rock
- metamorphic rock

WHAT IS IGNEOUS ROCK?
“Igneous” means
“born of fire”
 Igneous rocks
form when
magma (lava)
from volcanoes
cools down
 Granite is a type
of igneous rock

WHAT IS SEDIMENTARY ROCK?


Sedimentary rock
forms when
sediment (basically,
bits of different
elements) is
compacted into rock
Chalk and limestone
are types of
sedimentary rocks
WHAT IS METAMORPHIC ROCK?
Metamorphic
rocks form when
other types of
rock are
squeezed
together so much
by the pressure
within the Earth
that they become
new rocks
 Marble is a type
of metamorphic
rock

IS THE CRUST DIFFERENT IN DIFFERENT
PLACES?



Crust can be different
depending on where you are.
For example, crust is thicker
beneath continents than it is
beneath oceans or rivers
Mountains are parts of the
crust that stick out (made of
rock), and beneath and near
mountains, the crust is
thickest