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Minerals of Earth7
Minerals of Earth Test
Question | Answer |
---|---|
Why is using a streak more reliable in identifying a mineral than using color is? | If some types of minerals are exposed to water and air for a long period of time, they can change to a different color |
Fluorescence | A visible light emitted by substances when subjected to an ultra-violet light |
Cleavage | The splitting of a mineral along a smooth, flat surface |
Ultra-Violet | A form of radiant energy having wavelengths shorter than those of visible light and longer than those of x-rays |
Luster | The way a surface reflects light |
Fracture | The tendency of some minerals to break unevenly along curved or irregular surfaces |
Mineral | A naturally occurring solid consisting of a single element or compound |
Streak | The color of a mineral in powdered form |
Hardness | A mineral's resistance to being scratched |
Density | The measure of how much matter is in a given amount of space |
Silicate Minerals | Minerals that contain a combination of silicon and oxygen |
Non-Silicate Minerals | Minerals that do not contain and combination of silicon and oxygen |