Download Inside the Earth

Inside By:Jaron
the Earth
What is a
seismic
wave
•
A seismic wave is when
pressure from the earth
causes rocks along
faults to move and
break.There are 3 types
of seismic waves
What is an earthquake
•
A earthquake is a movement or vibration of the
earth. They are caused by the release of stored
energy in earths outer layer.This release of energy
causes sudden shifts of rocks along faults
Tectonic Plates
The earth is like a big cracked
egg. On earth there are 7-8
major tectonic plates and
many mirror plates.
All about
faults
When rocks found along a
break move, the break is
called a fault.Around the
tectonic plates there are
faults. Earthquakes happen
around faults.
Primary Waves
•
Also known as P waves.
•
The primary wave is
also the fastest waves.
•
It is first to arrive at a
distant point.
•
It can travel through
solids,liquids,and gases.
Secondary Waves
•
Also known as S waves
•
They are slower than P
waves
•
And they arrive later at
the distant point.
•
Travels through solid
only
Surface Waves
•
Also known as L waves
•
They are the slowest
but they cause the most
damage
•
They are felt at the
surface
Seismographs
•
A seismograph is a tool that
helps scientist record the force
and duration of an
earthquake.It records the
information on a seismogram.
What is
earths
structure
There are 4 parts to the
earth.The 4 parts of the earth
are:crust,mantle,outer
core,and Inner core.
Crust
•
The crust is earths outer layer
•
It is also the thinest layer and
we live on it.
•
It is deeper under continents
then oceans
Mantle
•
The mantle is the thickest
layer.
•
It is a layer of rock lying below
the crust.
•
Also it is allows tectonic plates
to move slowly.
•
Rocks move or flow due to high
temperatures.
The Core
•
The core is split into two parts
inner and outer
•
The outer core is made of
melted iron.It is totally liquid
and the inner core floats in it.
•
The inner core is a solid
sphere.It is the center of the
earth. It spins a different rate
than the rest of the planet.