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Science:Chapter 1

seismic waves indirect evidence to study Earth's inside, caused by earthquakes
pressure result from a force pressing on an area
crust the layer of rock that forms Earth's outer skin
granite a rock that usually is a light color and has a coarse texture; forms the continental crust
basalt dark rock with fine texture; forms the oceanic
mantle a layer of hot rock
lithosphere the uppermost part of the mantle and the crust together
asthenosphere a soft, solid layer
outer core a layer of molten metal that surrounds the inner core
inner core a dense ball of solid metal
radiation the transfer of energy through space
conduction heat transfer within a material or between material that are touching
convection heat transfer by the movement of currents within a fluid
density a measure of how much mass there is in a volume of a substance
convection currents the flow that transfers heat within a fluid
Earths magnetic felid the liquid outer core causes the solid inner core to spin faster than Earth's rotation
continental drift Wegener's idea that the continents slowly moved over Earth's surface
Pangaea when the continents came together and created an supercontinent
fossil any trace of an ancient organism that has been preserved in rock
mid-ocean ridge a long line of big mountias
sonar a device that bounces sound waves off underwater objects and then records the echoes of these sound waves
sea-floor spreading continually adds new material to the ocean floor
deep-ocean trenches deep underwater canyons
subduction the process in which ocean floor sinks beneath a deep ocean trench and back into the mantle
plates cracks in the continents which separates the lithosphere into different sections
scientific theory a well tested concept that explains a wide range of observations
plate tectonics states that pieces of earths lithosphere are in slow constant motion created by convection currents in the mantle
faults breaks in earths crust where rocks have slipped past each other form along these boundaries
diversion boundary the place where two plates move apart or diverge
rift valley a deep valley
convergent boundary the place where two plates come together or converge
transform boundary a place where two plates slip past each other moving in opposite directions
Created by: jahill