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6SC-Inside the Earth
Power Words
Term | Definition |
---|---|
composition | what something is made of Ex: the core of the Earth is made of iron & nickel |
crust | the outermost layer of the Earth; thinnest layer with the lowest temperature and density; made of rocks and minerals |
oceanic crust | part of the crust that makes up the ocean floor; mostly made of basalt; more dense but thinner than the other layer of the crust |
continental crust | part of the crust that contains the continents; thickest under mountains; made mostly of granite rock; less dense but thicker than other layer of the crust |
molten | melted due to heat; magma in the mantle has this consistency |
magma | molten rock found in the mantle that flows like a melted plastic (like "goo") |
mantle | the thickest layer of the Earth; contains molten rock called magma |
lithosphere | the entire crust and the upper solid part of the mantle |
asthenosphere | the larger part of the mantle; contains magma |
outer core | layer of the Earth made of LIQUID metal (iron & nickel) |
inner core | innermost layer of Earth; made of SOLID metal (iron & nickel); solid due to extreme pressure; most dense of all of the layers |
density | the amount of matter ("stuff") packed into a given amount of space (volume) |
inner core --> outer core --> mantle --> crust | layers of Earth, from highest to lowest temperature AND from highest to lowest density |
mantle --> outer core --> inner core --> crust | layers of Earth, from thickest layer to thinnest layer |
theory of continental drift | states that the continents were once part of a large landmass that slowly drifted apart to their present day locations |
Pangaea | name given to the once giant super-continent |