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6 Plate Tectonics
Study Guide
| Word | Definition |
|---|---|
| Lithosphere | rigid part of the earth, made up of upper mantle and crust |
| Asthenosphere | plastic like layer the plates move/float on |
| Faults | cracks in the rock, movement causes earthquakes |
| Waves | disturbances that carry energy through matter and space |
| Plate Boundaries | edges where plates meet |
| Shearing | force that pushes something in 2 different directions (not tension) |
| Convection | any material moved because of differences in density |
| Buoyant | force of water balancing the force of gravity |
| Isotasy | earth's lithosphere floats on the asthenosphere |
| Subduction | happens when one plate slides under another plate |
| Mountains | are made when 2 continental plates collide, pushing each other up |
| Compression | happens when the 2 ends of a plate squeeze/push together |
| Tension | occurs when the 2 ends of a plate are pulled in opposite directions |
| Earthquakes | are made when 2 plates slide/rub against each other |
| Volcanoes | are made when plates go through subduction or lava piles up over time |
| Fault Blocked Mountains | are made when the tilted rock layers separate by fault, pull apart because of tension |
| Upwarped Mountains | are made when the forces inside the earth push up and out of the earth's crust |
| Folded Mountains | are made when the rocks layers buckle and fold because of compression |
| Outer Core | is a liquid (molten metal/iron)/stops seismic waves |
| Inner Core | hottest part, 5000 degrees Celsius/ made of solid iron |
| Crust | has the oceans, continents/ can be thick in some areas or thin in other areas |
| Mantle | largest layer/ moves slowly |