SJ - Chp 7 Rocks & Soil Vocabulary

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SJ - Science Chp 7 Rocks & Soil Vocabulary

rock

natural, solid, non-living material made of one or more minerals

mineral

natural material that forms from non-living matter

soil

the part of Earth's surface consisting of humus and weathered rock in which plants grow

nutrient

thing plants need in order to grow

igneous rock

rock that forms when melted earth materials cool and harden

metamorphic rock

rock that forms when existing rock is changed by heat and pressure

sedimentary rock

rock that forms when small pieces of earth materials collect and become bound together

decay

to break down, or rot

loam

soil that contains a mixture of humus and mineral materials of sand, silt, and clay

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