Untitled Lesson

LEARNING TARGET

6.E.2.1 Summarize the structure of
the earth, including the layers, the
mantle and core based on the relative
position, composition and density.
● compare and contrast the crust,

mantle, outer core and inner core

Layers of the Earth

EARTH’S LAYERS
VOCABULARY

Inner core – a ball of hot solid

metal at the center of the earth
made of iron

Outer core – liquid layer of metal

nickel & iron that surrounds the
inner core
Mantle– earth’s thickest layer

between the outer core and
crust made of magma. This is
made of silicate rocks

Crust– the top layer of earth

made of a thin layer of cool rock

Lithosphere– the layer of earth

made of the crust and the rigid
rock of the upper mantle which
is broken into tectonic plates

Asthenosphere– the layer in

earth’s upper mantle directly
under the lithosphere in which
rock is soft and weak because it
is close to melting

MAKEUPOFTHEEARTH’SCRUST

Earth’s
Crust

Mantle

Outer
core

Inner
core

Cross-Section of the Layers of

the Earth

Depth

Name of Layer

What Layer
is Made Of

20 km
crust

solid rock, mostly granite
and basalt

150 km
asthenosphere (mantle)

soft slow flowing material

2,000 km
mantle

hot, but solid material

4,000 km
outer core

molten iron and nickel

6,000 km
inner core

solid iron and nickel

Data Table

LAYERSOFTHEEARTHVIDEOSUMMARY

Make sure you have logged into your Discovery
Education account through the Wake ID page first.

#1 Layers of the Earth

#2 Structure of the Earth Exploration

#3 How do Scientist’s know what's inside the Earth?

PAPER PLATE ACTIVITY
REVISITED

◦ Create a model of the earth by labeling

the layers

◦ Label inner core (4000 miles deep in the

earth - 800 miles wide) , outer core ( 1400
miles wide), mantle (1800 miles wide), crust
(8 miles), lithosphere, asthenosphere,

◦ indicate liquid and solid, density, and

temperature gradient.

Exit Ticket

1.

How many major layers are there in the earth?
a.) 1 b.) 2 c.) 3 d.) 4

2.) How do scientists know what is inside the earth?
a.) special equipment b.) volcano and rocks
c.) Voyage to the center of the earth d.) super powers

3.) Which layer is made of liquid?
a.) mantle b.) outer core c.) lithosphere d.) asthenosphere

4.) The pressure on the lithosphere is the smallest. True or false

5.) The density in the center of the earth is greater than here on the
surface. True or False

Exit Ticket

1.

How many major layers are there in the earth?

a.) 1 b.) 2 c.) 3 d.) 4

2.) How do scientists know what is inside the earth?

a.) special equipment b.) volcano and rocks c.) Voyage to the
center of the earth d.) super powers

3.) Which layer is made of liquid?

a.) mantle b.) outer core c.) lithosphere d.) asthenosphere

4.) The pressure on the lithosphere is the smallest. True

5.) The density in the center of the earth is greater than here on the
surface. True