Download The core

UNIT
6
The Earth’s structure
THE LAYERS OF THE GEOSPHERE
Natural Science 2. Secondary Education
UNIT
6
The layers of the geosphere
Crust
Mantle
Core
Click on each name
to find out more
Natural Science 2. Secondary Education
UNIT
6
The layers of the geosphere
The crust
• This is the outer layer of the geosphere.
• It is very thin compared with the mantle and
core.
• It is made up of hard, solid rocks.
• There are two zones:
The oceanic crust: this is
found on the ocean floor. It is
thinner and denser than the
continental crust.
Natural Science 2. Secondary Education
The continental crust: this
forms the continents and the
continental platforms.
Go back to the start menu
UNIT
6
The layers of the geosphere
The mantle
• This is the middle layer of the
geosphere; it is also the thickest.
Hard
mantle
Soft
mantle
Mantle
Natural Science 2. Secondary Education
• It is made up of denser rocks than
those of the crust. Most of them are
solid.
• The rocks in the upper part are hard,
but most of the rocks of the mantle are
relatively soft (malleable), and in some
zones they can be molten.
Go back to the start menu
UNIT
6
The layers of the geosphere
The core
• This is the innermost layer of the Earth. It
is also the densest.
• It is made up of metals.
• There are two parts:
• The outer core, which is molten
metal.
• The inner core, which is solid.
Outer
core
Inner
core
Core
Natural Science 2. Secondary Education
Go back to the start menu