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Chapter 2 Section 2 Terms to Know: mantle fold continental drift fault magma weathering plate tectonics erosion subduction loess accretion glacier spreading moraine 1. _______________________ is the process by which mountains can form as sea plates dive beneath continental plates. 2. A _____________________ is a crack or break in the earth’s crust. 3. _______________________ is a fine, yellowish-brown topsoil made up of particles of silt and clay, usually carried by the wind. 4. ________________________ is molten rock that is pushed up from the earth’s mantle. 5. The _____________________ is the thick middle layer of the earth’s interior structure, consisting of dense, hot rock. 6. ________________________________ is the theory that the continents were once joined and then slowly drifted apart. 7._______________________________ refers to chemical or physical processes, such as freezing, that break down rocks. 8. A ______________________ a bend in layers of rock, sometimes caused by plate movement. 9. _______________________ refers to piles of rocky debris left by melting glaciers. 10. A ____________________ is a large body of ice that moves across the surface of the earth. 11. ______________________is a process by which new land is created when sea plates pull apart and magma wells up between the plates. 12. ______________________ is a slow process in which a sea plate slides under a continental plate, creating debris that can cause continents to grow outward. 13. _______________________ is the wearing away of the earth’s surface by wind, flowing water, or glaciers. 14. ______________________ is the term scientists use to describe the activities of continental drift and magma flow which create many of Earth’s physical features.