Classification of Rocks and the Rock Cycle (Grade 10 NSC Matric Geography): Flashcards
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3 main rock types
3 main rock types
Igneous, sedimentary, metamorphic
Magma vs lava location
Magma vs lava location
Magma=underground; lava=surface
Extrusive igneous rock features
Extrusive igneous rock features
Quick cooling, small crystals, dark colour
Intrusive igneous rock features
Intrusive igneous rock features
Slow cooling, large crystals, lighter colour
Where most sedimentary rocks form
Where most sedimentary rocks form
Ocean floors in layers
Weathering vs erosion
Weathering vs erosion
Weathering=breaks down; erosion=moves away
Example of organic sedimentary rock
Example of organic sedimentary rock
Coal (from compressed plant remains)
Metamorphic rocks definition
Metamorphic rocks definition
Rocks changed by heat, pressure, or both
Contact metamorphism: limestone becomes
Contact metamorphism: limestone becomes
Marble
Rock cycle meaning
Rock cycle meaning
Continuous transformation of rocks from one type to another