Here is the matching of terms from Unit 4 Rocks and Minerals with their corresponding definitions/descriptions/examples:
- Cleavage: t. Breakage of a mineral along flat, smooth planes. Like mica.
- Density: k. The amount of mass in a given volume.
- Fracture: p. Breakage of a mineral is jagged and unpredictable.
- Hardness: f. Talc has the lowest ___ (1) because all other minerals can scratch it.
- Luster: e. The __ of a mineral is the way it reflects light. EX: brilliant, glassy, metallic.
- Magnetism: r. Contains Iron/Nickel, has a polar field, and is attracted to or repels another object.
- Vitreous: g. Another term for "Glassy Luster," Jewels have this kind of luster.
- Ore: h. An economically valuable mineral embedded in rock. As it is found in nature.
- Surface mining: n. Stripping of the top layer of Earth to reach ore deposits.
- Underground mining: i. Drilling deep in the earth to find ore deposits. ie- "Shaft mines" ** Dangerous if collapses.
- Land reclamation: b. Restoring a mining site to its previous natural state.
- Smelting: q. Super heating rock in order to extract a metal from an ore.
- Corrosion: c. When a material is destroyed by a chemical reaction.
- Dredge: j. Machinery used to sift through sediment at the bottom of a body of water.
- Rare Earth elements: a. Hard to find minerals - very valuable! Often used in products like Smart Devices.
- Tailings: s. The leftover rock remaining after the useful mineral is extracted from an ore.
- E-waste: o. Discarded electronic devices, which should be recycled. Like old iPhones.
- Conflict minerals: d. Mining these can be dangerous because they fund violent and radical groups.
- Sustainable: m. Mining practices that can be done over a long period of time.
- Overburden: l. In a mining area, this is ALL the waste that must be removed by the mining company before restoration can begin.
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