Chapter 4 Science Terms
Terms
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- seafloor spreading
- movemen of ocean floor moving away from midocean ridge
- plate tectonics
- theory of lithospheric plates on athensosphere that move by convection
- Panthalassa
- giant ocean surronding Pangaea
- divergant boundary
- boundary formed by the lithospheric plates seperating
- granite
- continetal crust
- convergant boundary
- border formed by collision of lithospheric plates
- convection
- transfer of heat through fluid material
- subduction zone
- region where one plate is forced under another
- asthenosphere
- layer of the mantle beneath the lithosphere that consist of slowly moving rocks
- mid ocean ridge
- undersea mountain range that circles the earth
- Pangaea
- single landmass thought to have been origin of all continents
- supect terrane
- piece of land with its own distinct history
- island arc
- chain of volcanic islands formed along oceanic trenches
- lithosphere
- rigid outer shell of the earth consisting of the crust and part of the upper mantle
- Basalt
- oceanic crust
- transform fault boundary
- San Andreas