3.3 Earth's Spheres
The Geosphere
and
on and below Earth's surface:
: Thin, cool...
![subject](/tpl/images/cats/biologiya.png)
3.3 Earth's Spheres
The Geosphere
and
on and below Earth's surface:
: Thin, cool, rocky outer "skin"
O
O
: Very hot and mostly solid
O
: Outer core is molten metal,
inner core is solid metal
Plate Tectonics
• Crust and mantle are divided into:
: Crust and uppermost
mantle; divided into tectonic plates
: Soft middle mantle; heated
by outer core
: Solid rock
• Convection
in the asthenosphere
tectonic plates.
and
of the plates result in landforms.
Tectonic Plates
• There are three major types of plate boundary:
the fl
Divergent and Transform Plate Boundaries
110.
Oceanic
crust
boundaries: Rising magma pushes plates apart.
boundaries: Plates slip and grind alongside one
another
Magma
(a)
Convergent Plate Boundaries
• Plates
causing of
_things to happen:
: One plate slides beneath another.
: Both plates are uplifted.
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