FOSSIL - Preserved remains or traces of an organism, LAYERS OF THE EARTH - crust, mantle, outer core, inner core, LAW OF SUPERPOSITION - The top rock layer and its fossils is the youngest and the bottom is the oldest., DENSITY - How compact a substance is., 2 TYPES OF EARTH'S CRUST - continental and oceanic, LITHOSPHERE - A rigid layer made up of the uppermost part of the mantle and the crust., ASTHENOSPHERE - The soft layer of the mantle on which the lithosphere floats., CONVECTION - Process by which, in a fluid being heated, the warmer part of the mass becomes less dense & will rise and the cooler portions become more dense & will sink. (Lava Lamp), MANTLE IS MADE OF - hot dense molten rock, CAUSE OF PLATE MOVEMENT - convection currents in the mantle, THICKEST LAYER - mantle , EARTH'S OUTER CORE - the liquid layer of nickel and iron between the mantle and the center of Earth, creates Earth's magnetic field., EARTH'S INNER CORE - a dense ball of solid metals, Nickel & Iron (Mostly Iron), THE DENSEST LAYER OF THE EARTH - inner core because elements with the highest density sink to the center of the Earth.,

ES Part 2 Earth Composition

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