The core is the innermost layer of Earth, mainly composed of iron and nickel. It has an outer liquid layer and inner solid layer. The rotation of the inner core in the opposite direction of the outer core's flow generates Earth's magnetic field, which protects the planet from solar winds.

1. The Core

2. • The core is the innermost
layer of Earth.
• It is considered as Earth’s
center, with a thickness of
around 3 500 km.
THE CORE
Earth’s Core

3. • In general, the core is
composed mainly of iron,
nickel, and lighter elements:
sulfur, oxygen, carbon and
hydrogen.
• Turbulent flow of iron in the
outer core is believed to be
responsible for the generation
of Earth’s magnetic field.
CORE COMPOSITION
Earth’s Core

4. • Turbulent flow of iron in
the outer core is believed
to be responsible for the
generation of Earth’s
magnetic field.
CORE COMPOSITION
Earth’s Magnetic Field

5. • The outer core is a liquid
layer, 2260 km thick. The
temperature in this region
is very high allowing the
melting of materials.
LAYERS OF EARTH’S CORE
Earth’s Core

6. • The inner core is the
innermost layer of Earth. It
is also composed of iron
and nickel and light
elements. Unlike outer
core, this layer is in solid
phase.
LAYERS OF EARTH’S CORE
Earth’s Core

7. • The inner core rotates in
opposite the direction of the
flow of the outer core, creating
a geodynamo effect that
generates Earth’s magnetic
field.
MOVEMENT IN THE CORE
Rotation in the Earth’s Core

8. • This magnetic field is very
important in protecting Earth
from the charged particles
emitted by the solar winds.
MOVEMENT IN THE CORE
Rotation in the Earth’s Core

9. • Without Earth’s magnetic
field, the solar wind will
strip off the ozone layer
from Earth’s atmosphere.
MOVEMENT IN THE CORE
Earth’s Magnetic Field

10. • The ozone layer prevents
and protects Earth’s
inhabitants from the
harmful ultraviolet rays.
MOVEMENT IN THE CORE
Earth’s Magnetic Field

11. The core is the innermost layer of Earth which is mainly
composed of iron and nickel.
1
Outer core is the innermost liquid layer of Earth.
2
Inner core is the innermost solid layer of Earth.
3

12. 1. The core is composed of iron, nickel, silicon, and oxygen.
2. Inge Lehmann utilized information from seismograph to
study the internal structure of Earth
3. Inner core rotates in clockwise direction.
4. Primary wave could be able to pass through fluids.
5. The outer core is located 5 200 km from the surface.
WRITE TRUE IF THE STATEMENT IS CORRECT
WHILE WRITE FALSE IF THE STATEMENT IS
INCORRECT.

13. The core is thousands of
kilometers away from where we
live. How did scientists know about
the composition of this layer?