science Flashcards
sismic waves
vibrations that travel through earth
pressure
the force exerted on a surface divieded by the total area
crust
the layer of that forms earths surface
balsat
a dark dens igneous rock
granite
a light colored rock that is found in the continental crust
mantle
the layer hot solid material beneath earths crust
lithosphere
a riged layer made up of the most part of the mantle
athoshpere
the soft layer of the mantle
outer core
a layer of molton iorn and nikle that surrounds the inner core
inner core
a dens sphere of solid iorn
radiation
the direct trasfere of energy through space by electromagnets
conduction
the direct transphere of thermal energy from one substance to another
convection
the transphere of energy by the movment of a fluid
density
the amount of mass an object has in an given volume
continental drift
the hypothises that the continets slowly move across the surface of earth
pangea
the name of the sinle landmass that broke apart 2million years ago
fossil
a trace of a once living orgonism that has been preserved over time.
mid-ocean ridge
an underwater mountin chain where new ocean floor is produced
sonar
a divice that deturmans the distance of an object of an object under water
sea floor spreading
the procces by wich molton matirial adds to new crust in the ocean floor
deep ocean treanch
a deep vally along the ocean floor
subduction
the procces by wich ocianic crust sinks beneth a deep ocean trench and back into the mantle
plate
a section of the lithosphere that slowly moves and carry the crust
plate tectonic s
the theroy that pices of earths lithosphere arein constint motion
