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4C ch 2 & 3

4C ch 2 & 3 vocabulary

TermDefinition
luster a way that the surface of a mineral reflects light
mineral a natural, solid material with particles arranged in a repeating pattern
streak the color of the powder left behind when you rub a mineral against a white tile called a streak plate
hardness a mineral's ability to resist being scratched
rock a material made up of one or more minerals
igneous rock a rock that forms when completely melted rock hardens
sedimentary rock a rock formed by layers of sediments squeezed and stuck together over a long time
metamorphic rock a rock changed by heat or pressure, but not completely melted
rock cycle the slow, never-ending, process of rock changes
erosion the process by which wind and moving water carry away bits of rock
weathering the process by which rocks are broken down into smaller pieces
mantle the thickest layer of Earth; found just below the crust
crust Earth's outer layer; includes the rock of the ocean floor and large areas of land
fossil a preserved clue to life on Earth long ago
core the dense center of Earth; a ball made mostly of two metals, iron and nickel
mold a fossil imprint made by the outside of a dead plant or animal
cast a fossil formed when sediments or minerals fill a mold; it takes on the same outside shape as the living thing that shaped the mold
trace fossil a fossil that shows changes that long-dead animals made in their surroundings
Created by: mbeisert
Popular Earth Science sets

 

 



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