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ch.4 vocabulary
chapter 4 vocab reveiw #1
Question | Answer |
---|---|
fossil | any trace of an anceint organism that has been preserved in rock,includes plants and animals |
continental drift | the theory that the continents have slowly moved over the earths surface |
crust | the layer of rock that forms the Earths outer skin |
faults | breaks in the earths crust where rockes have slipped past eachother |
inner core | a dense ball of solid metal that is located in the center of the earth |
plate tectonics | a theory that states peices of the earths surface are in slow,constint motion,driven by convention currents in the mantle |
plates | cracks in the lithosphere that break into separate sections |
mantle | a layer of solid hot rock that is located beneath the crust |
pangaea | a "supercontinent" where all the land masses were joined together |
outer core | a layer of molten rock that surrounds the inner core, it is liquid |