Background
Radiation- Left over
radiation (moving
energy) from the Big
Bang
Layers of the Earth
Layers of Earth Pizza Style
The Moho - boundary between Crust
and Mantle
The Mohorovicic Discontinuity marks the lower limit
of Earth's crust.
The Mantle
2/3 of the Earth’s Mass, 70% of Volume
Upper Mantle has Lithosphere (solid) and Asthenosphere
pressure keeps it solid (plasticity)
The Core
Extremely Dense
1/3 Earth’s Mass
30% Volume
Outer Core:
liquid, iron and
nickel
(magnetosphere)
Inner Core:
Solid, Iron
(HOT!!! OUCH)
Seismic Waves
• Waves Created by an
Earthquake or Explosion
• Primary (P) Waves move
through liquids, solids,
Gas
• Secondary (S) Waves
move through only solids
• Waves bend with
changes in density
Shadow Zones
• Non-uniform rigidity in
material
• No S or P waves can get
through
• OR P can get through but
not S
Isn’t the North Pole
where Santa Lives?
The Earth’s Magnetosphere
-Created from movement
of the liquid, which
creates a electrical
current in the
outer core (iron and
nickel)
-Dipole is created (like a
magnet)
-Magnetic North and
Magnetic South are
different from
Geographic North and
Geographic South
Magnetowha?
Gravity
Mass- the amount of
matter in an object,
independent of gravity.
Weight- measure of the
strength of the pull of
gravity on an object.
Law of Gravitation- states
that the force of attraction
between any two objects
depends upon their
masses and the distance
between them.
Is your weight the same all
over Earth? Think of the
shape and your distance from
Earth at different locations.
Movements
of
Earth
Seasons Video
Funny Video