The remains or shape of a plant or animal that lived a long time ago, found in rock. - fossil, Rock made from layers of sand, mud, and small pieces of rock that get pressed together over time. - sedimentary, Rock that has changed because of heat and pressure under the ground. - metamorphic, Rock that forms when hot, melted rock cools down and becomes hard - igneous, Sparkly shapes that grow inside some rocks when liquids cool slowly. - crystals, How a rock feels or looks, like smooth, rough, bumpy, or grainy. - texture,

Science: Rocks

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