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Rock & Minerals
Vocab.
Term | Definition |
---|---|
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 |