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6th Wk 14-15

Las placas tectonicas

TermDefinition
Pangea gran masa de tierra donde todos los continentes estaban unidos
deriva continental hipotesis que propone que en algun momento todos los continentes estuvieron unidos
teoria de la tectonica de placas establece que la capa externa de la Tierra esta dividida en grandes bloques que se mueven lentamente
dorsales oceanicas es una cordillera submarina
expansion de suelo marino ocurre cuando el magma sube a lo largo de las grietas en la dorsal oceanica creando corteza oceanica nueva y empujando la corteza antigua
fosas oceanicas lugar donde las placas oceanicas se hunden y se destruyen
limites convergentes lugar donde dos placas chocan entre si
zonas de subduccion zona en donde una placa se hunde bajo otra placa
limites divergentes lugar donde una placa se aleja de otra placa
limites de transformacion lugar donde dos placas se rozan
conveccion movimiento del manto que causa el movimiento de las placas tectonicas
empuje de las dorsales fuerza que empuja las placas tectonicas y las aleja de las dorsales oceanicas
traccion de las placas es el choque de una placa continental con una placa oceánica donde la placa oceánica se hunde y lleva consigo la placa
Alfred Wegener formulo la hipotesis de la deriva continental
placa tectonica bloques en los cuales se divide la capa externa de la Tierra
Created by: abcuevas6
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