click below
click below
Normal Size Small Size show me how
Science
Plates Test
Term | Definition |
---|---|
Lithosphere | Crust and Upper Mantle |
Divergent boundary | Move away from each other |
Alfred Wegner | Meteorologist who proposed Continental Drift Theory |
Cinder cone volcano | Steep volcano, explosive, small |
Shield volcano | Gently sloping sides |
Transform boundary | Horizontal motion-Most in oceans |
Harry Hess | Proposed sea floor spreading theory |
Convection currents | A current of heated magma that makes plates float |
Volcanic island arc | Series of Volcanos |
Sea floor spreading | Ocean crust that causes rising magma |
Plutons | Intrusive igneous rocks associated with volcanoes |
Tephra | Any solid material out of a volcano |
Ductile deformation | Permanently deformed |
P waves | Push and pull |
S waves | Side to side |
Reverse fault | Pushed upward by compression |
Seismograph | Instrument that measures and records details of earthquakes |
Seismogram | A record produced by a seismograph |
Strike slip | Shear fault in horizontal direction |
Normal Fault | Tension fault |
Focus | Where rocks break place |
Epicenter | Point on surface directly above focus |
Richter Scale | A numerical scale for expressing the magnitude of an earthquake |
Moment Magnitude | Measures the size of earthquakes in terms of energy released |
Mountain | A large natural elevation of the earth's surface rising (a large hill) |
Pillow Basalt | Pillow like formation of lava rocks |
Orogeny | Earth crust us folded and deformed by compression to form a mountain range |