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grade4 chapter8

vocabulary for Chapter 8 Grade 4

QuestionAnswer
igneous rock rock that forms when melted (molten) rock from Earth's mantle cools and hardens
metamorphic rock new rock that forms when existing rocks are changed by heat, pressure, or chemicals
mineral a solid material in Earth's crust that has a definite chemical makeup
sediment sand, particles of rock, bits of soil, and remains of once-living things
sedimentary rock rock that forms when sediment settles and is glued together by dissolved minerals
earthquake a sudden movement of part of Earth's crust
landslide the sudden movement of loose rock and soil down a steep slope
lava molten rock that reaches Earth's surface
magma molten rock beneath Earth's surface
volcano an opening in Earth's crust through which hot ash, gases, and molten rock escape from deep inside Earth
deposition the dropping of sediment moved by water, wind, and ice
erosion the movement of rock material from one place to another
glacier a large mass of ice that moves slowly over land
weathering the slow wearing away of rock into smaller pieces
Created by: paulakeeton
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