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SCI 6th BF C2. 1-4

Science 6th Book F Chapter 2 Sections 1-4

TermDefinition
rock a naturally occurring solid mixture of one or more minerals or organic matter
rock cycle the geological processes by which a rock forms, changes types, is destroyed and forms again
erosion the process by which wind, water, ice or gravity transports soil and sediment from one location to another
deposition the process in which material is laid down (think deposit)
composition chemical make-up of the rock; describes the minerals or materials in the rock
texture the quality of the rock based on the sizes, shapes or position of the rock's grains
stratification the process in which sedimentary rocks are arranged in layers
strata layers of rock
igneous rock hot magma (liquid rock) cools and becomes solid over time
sedimentary rock sediment or rock/mineral fragments that are compressed or bound together in many layers over time
metamorphic rock a rock's texture, structure or composition has been changed by intense pressure, heat or both.
Moh's Hardness Scale The scale used to measure the hardness (it ability to be scratched) of a rock
hardness the measure the rock's resistance to scratching
luster the way the rock reflects light
cleavage the breakage of a mineral/rock on a flat plane
streak the color of the powdery residue left behind after you drag the mineral/rock across a hard plate
fracture uneven breakage of a mineral/rock
crystal form how a mineral/rock grows
Created by: Miss Schaen