nicolle's science vocab (some)
Terms
undefined, object
copy deck
- sea-floor spreading
- the process by which molten material adds to make oceanic crust to the
- deep-ocean trench
- a deep valley along the ocean floor beneath which oceanic crust slowly sinks tward the mantle
- convergent boundry
- a plate boundry where two plates move tward each other
- plate
- a section of the lithosphere that flloats on the atheneasphere carrying parts of the continental and oceanic crust
- mid-ocean ridge
- an undersea mountain range where new ocean floor is produced by a divergent plate boundry
- fossil
- a trace of an ancient organism that has beeen preserverd in rock
- scientific theory
- a well tested concept that explains a wide range of ovservations
- divergent boundry
- a plate boundry where two plates move away from each other
- subduction
- the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundry
- fault
- a break in Earth's crust where masses of rock slip past each other
- rift valley
- deep valley that forms where two plates move apart
- sonar
- a device that bounces sound waves off underwater objects and then records the echos of theses sound waves
- transform boundry
- a plate boundry where two plates move past each other
- plate tectonics
- the theory that pieces of Earth's lithosphere are inconsant motion driven by convection currents in the mantle