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8th Grade STAAR Plate Tectonics and Topo Maps
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Alfred
Wegener
A German scientist who proposed the theroy of
continental drift
Ancient
Climate
Evidence
Preserved remains of tropical reefs were found
on the Arctic island of Spitsbergen supports the
Theory of Continental Drift.
Continental
Drift
The hypothesis that states that the continents
once formed a single landmass, broke up, and
drifted to their present locations
Contour
Interval
On a topographic map, tells the distance in
elevation between adjacent contour lines.
Contour
Lines
Line on a topographic map that indicates an
elevation; every point along a contour line has
the same elevation.
Convection
Currents
Circular currents in the mantle caused by the
magma being heated by the core off the Earth.
27.
Convergent
Boundary
A plate boundary where two plates move
toward each other.
28.
Crust
Earth's outermost layer.
Divergent
Boundary
A plate boundary where two plates move away
from each other.
Elevation
Height above sea level
Erosional
Features
Earth's surface that shows evidence of the
natural processes of weathering and the
removal and relocation of weathered materials.
Fault
A break in Earth's crust where continental
plates slip past each other.
Fossil
Evidence
Traces of the same prehistoric organisms are
found on different continents separated by
oceans
14.
Harry Hess
Proposed the theory of sea-floor spreading
where new crust material is created and is
destroyed at ocean trenches, which lead to the
theory of Plate Tectonics.
15.
Inner Core
A dense sphere of solid iron and nickel at the
center of Earth.
16.
Lithosphere
Earth's crust and solid upper mantle, broken
into tectonic plates
17.
Mantle
Earth's thickest layer made of hot rock and is
less dense than the core, less hot, and has less
pressure on it.
Mid Ocean
Ridge
An underwater mountain chain where new
ocean floor is formed.
19.
Outer Core
A layer of molten iron and nickel that
surrounds the inner core of Earth.
20.
Pangea
A supercontinent containing all of Earth's land
that existed about 225 million years ago.
21.
Plasticity
Condition of being able to be shaped or formed.
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18.
Puzzle Piece
Evidence
Supports the Theory of Continental Drift by
matching up coast lines from different
continents.
Rift Valley
A deep valley that forms where two plates
move apart.
Satellite
Views
Images taken over time that can be used for
comparison and interpretation of erosional
features.
Seafloor
Spreading
The process that creates new sea floor as
plates move away from each other at the midocean ridges.
Subduction
Process in which one plate moves under
another plate, and into the mantle. Takes
place at a convergent boundary.
Tectonic
Plates
Sections of the Earth's crust that move due to
convection currents.
Topographic
Map
A map that shows the shape of the ground as
well as location and elevation of surface
features using contour lines.
Transform
Boundary
A plate boundary where two plates move past
each other in opposite directions.
30.
Trench
Found at convergent boundaries where
subduction is occurring.
31.
Volcano
A weak spot in the crust where magma has
come to the surface and is usually found at
convergent boundaries.
32.
Weathering
The breaking down of rocks and other
materials on the Earth's surface.
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