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Rock & Minerals

Vocab.

TermDefinition
mineral a naturally occurring, inorganic solid with a chemical formula and crystal structures
crystal a solid in which the atoms are arranged in a regular, repeating pattern
streak the color of the powder left by a mineral when it is gently rubbed on a porcelain tile
luster the way a mineral's surface reflects light
hardness how much a mineral resists being scratched
density the amount of matter in a given volume
cleavage a rock breaking into smooth flat surfaces
fracture a rock breaking unevenly
rock hard natural-occurring mix of one or more minerals
igneous rock rock that forms when magma/lava cools
metamorphic rock rock that forms when another rock is changed by heat and/or pressure
sedimentary rock rock that forms from sediments that are compacted and/or cemented together, or from the precipitation of material from a liquid
hypothesis potential answer to a question that can be tested by gathering information
qualitative observation a descriptive observation that uses the senses
quantitative question a numerical observation that is measured or counted
mass the amount of matter in an object
volume the amount of space an object takes up
IV factor that is changed, or manipulated, by a researcher in a scientific experiment
DV factor in an experiment that is expected to change, or response, when the manipulated variable changes
Conclusion description of the results or outcome of an experiment
Created by: nwverren