The Rock Cycle Vocabulary Be Productive Write words

The Rock Cycle Vocabulary Be Productive! Write words and definitions quickly but legibly! SLIDES CHANGE QUICKLY!

1) Mantle – 2 parts – solid upper mantle close to the surface and a partially molten lower mantle 2) Lithosphere – the crust and the solid upper mantle 3) Asthenosphere – beneath the lithosphere – partially molten lower mantle Mantle is ~ 1, 780 miles in thickness Solid Lithosphere ~ 37 miles in thickness Molten Asthenosphere ~ 60 miles in thickness

4) Crust – relatively thin solid layer covering the surface of Earth – Oceanic crust averages between 3 -6 miles and Continental crust averages 20 -30 miles in thickness 5) Core – 2 parts – liquid outer core (Fe, Ni, O 2 & Si) and solid inner core (Fe & Ni) Outer Core = ~ 1370 miles thick Inner Core = ~ 795 miles thick

6) Rock Cycle – recycling of matter into 3 main types of rocks 7) Magma – molten rock inside Earth 8) Lava – molten rock on top of Earth’s surface

9) Igneous Rock – rock formed from cooled magma or lava 10)Metamorphic Rock – rock formed from immense heat and pressure 11)Sedimentary Rock- rock formed from sediments (broken down pieces of rocks)

12)Extrusive – igneous rocks that form on the surface of Earth 13)Intrusive – igneous rocks that form inside Earth 14)Felsic – light-colored, high-silica igneous rocks 15)Mafic – dark-colored, low-silica igneous rocks 16)Intermediate – rocks that are medium gray in color and fall between felsic and mafic rocks 17)Ultramafic – very dark green igneous rocks Felsic Intermediate Mafic Ultra. Mafic

18)Fine-grained – igneous rock with a smooth surface, no mineral grains visible 19)Coarse-grained – igneous rock with course surface, large mineral grains present 20)Porphyritic – igneous rock with large mineral crystals surrounded by a fine-grained texture 21)Glassy – igneous rock that cooled quickly, no mineral grains had time to form

22)Weathering – physical and chemical breakdown of rocks caused by wind, water, air, temperature, plants, and humans 23)Sediments – broken down pieces of rocks caused by weathering 24)Erosion (Mass wasting) – movement of sediments typically downhill 25)Deposition – the depositing of sediments on a landform 26)Lithification – process in which loose sediment is hardened to form rock

27)Evaporite – sedimentary salt crystals formed from the evaporation of water 28)Fossil – remains or impression of a prehistoric organism 29)Foliated – planar layering or flattening of mineral grains in metamorphic rock 30)Nonfoliated – no planar patterns of strain