Plate Tectonics Crossword

Asthenosphere
partially melted material; 250 km; "weak
crust/Outer, thinnest layer of the Earth. There are two
inner core/: Solid, innermost layer of Earth; Composed mainly of iron and
1,228
outer core/Only liquid layer of the earth; Composed mainly of
2,200
continental drift/ th theory that the continents are slowly drifting
seafloor spreading/Theory that states that ocean floors are forming and spreading out from the
subduction/ a heavier late is pushed under a lighter
crust/-Thickness: Up to 5-8 km
-Composition: Mostly
-Density: Approx. 3.0
continental crust/-Thickness: Up to 30-40 km
-Composition: Mostly
-Density: Approx. 2.7
convergent/Two plates coming
divergent/Two plates moving opposite each
continental- continental convergence/Two continental plates coming
continental-oceanic convergence/Oceanic and Continental plates coming
--Typically will form an ocean trench along a subduction
, where the ocean plate pushes
oceanic-oceanic convergence/Two ocean plates coming
--Typically will form an island arc as one plate pushes under the
transform/Two plates sliding horizontally past each
P wave/Also called compressional waves; the motion of the ground is parallel to the direction of wave motion. These waves can pass through solid or liquid
S wave/ move side to side, cannot go through
L wave: the most powerful wave, goes up, down, and side to
tsunami/a large, fast moving
Richter scale/Used to describe the amount of energy released by an earthquake. It ranges from 0 to 9, and each increase on the scale indicates a release of 32 times more