UNIT 12 VOCABULARY (ROCKS AND MINERALS) 2015
1)Cementation: A process whereby compacted sediments bind and stick together and turn into rock.
2)Compaction: A process whereby sediments pack, crush, and settle under the action of gravity and pressure from overlying layers.
3)Sedimentary Rock: Rock made of layers of compressed organic and inorganic sediments.
4)Metamorphic Rock: Rock deep within Earth's crust that has been exposed to extreme heat and pressure causing changes to its appearance, structure, and composition.
5)Igneous Rock: Rock formed when heated magma or lava cools and hardens.
6)Mineral: A naturally formed, inorganic solid that has a specific chemical formula and repeating three-dimensional structure.
7)Magma: Melted rock material beneath Earth's surface.
8)Lava: A result of molten rock material pushed to Earth's surface by volcanic action.
9)Luster: The way the surface of a mineral reflects light; either metallic or non-metallic such as silky, dull, glassy, or resinous.
10)Hardness: A measure of scratch resistance of various minerals through the ability of a harder minerals to scratch a softer minerals for identification; a set of ten minerals used as a standard of hardness against which an unknown mineral's hardness is compared (Known as Mohs Hardness Scale).
11)Streak: The color of a mineral in powdered form.
12)Crystal Formation: Geometric shape of a mineral that reflects its internal crystalline arrangement of atoms.
UNIT 12 VOCABULARY (ROCKS AND MINERALS) 2015
1)Cementation: A process whereby compacted sediments bind and stick together and turn into rock.
2)Compaction: A process whereby sediments pack, crush, and settle under the action of gravity and pressure from overlying layers.
3)Sedimentary Rock: Rock made of layers of compressed organic and inorganic sediments.
4)Metamorphic Rock: Rock deep within Earth's crust that has been exposed to extreme heat and pressure causing changes to its appearance, structure, and composition.
5)Igneous Rock: Rock formed when heated magma or lava cools and hardens.
6)Mineral: A naturally formed, inorganic solid that has a specific chemical formula and repeating three-dimensional structure.
7)Magma: Melted rock material beneath Earth's surface.
8)Lava: A result of molten rock material pushed to Earth's surface by volcanic action.
9)Luster: The way the surface of a mineral reflects light; either metallic or non-metallic such as silky, dull, glassy, or resinous.
10)Hardness: A measure of scratch resistance of various minerals through the ability of a harder minerals to scratch a softer minerals for identification; a set of ten minerals used as a standard of hardness against which an unknown mineral's hardness is compared (Known as Mohs Hardness Scale).
11)Streak: The color of a mineral in powdered form.
12)Crystal Formation: Geometric shape of a mineral that reflects its internal crystalline arrangement of atoms.