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Inside Earth Part 1
Unit 1 Layers of the Earth
Term | Definition |
---|---|
Asthenosphere | a layer of hot soft rock in the upper mantle on which the lithosphere rests |
Composition | the material something is made up of |
Crust | the layer of rock that surrounds the earth |
Density | The quantity of matter in a given volume of the substance |
inner core | intense pressure makes it a ball of hot solid metals at the center of the earth |
lithosphere | the crust and very top part of the mantle together |
magma | molten rock beneath earth's surface |
lava | molten rock that reaches the earth's surface through a volcano |
mantle | The layer of rock between Earth's outer core and crust, in which most rock is hot enough to flow in convection current; Earth's thickest layer |
outer core | A layer of molten metal, mainly nickel and iron, that surrounds Earth's inner core. |
Tectonic plate | one of the large moving pieces into which Earth's lithosphere is broken and which commonly carries both oceanic and continental crust. |