Review#5 rocks
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  • 1. L.O: REVIEW IGNEOUS,SEDIMENTARY AND METAMORPHICROCKS
  • 2. ROCKS: PIECES OF THE LITHOSPHERE(SOLID PART OF EARTH) MADE OFMINERALSTHERE ARE THREE KINDS OF ROCKS:IGNEOUS, SEDIMENTARY ANDMETAMORPHIC ROCK.
  • 3. ROCKS ARE CLASSIFIED (GROUPED) BYHOW THEY FORMED• IGNEOUS ROCKS: formed when MOLTEN ROCK(magna/lava) cools and solidifies.• SEDIMENTARY ROCK: FORMED FROM THECOMPACTION AND CEMENTATION OF SEDIMENT(ROCK) PARTICLES.• METAMORPHIC ROCK: FORMED BY HEAT ANDPRESSURE APPLIED TO EXISTING ROCKS.
  • 4. IGNEOUSROCKS
  • 5. IGNEOUS ROCKS: FORMED BY THESOLIDIFICATION & CRYSTALIZATION OFMOLTEN ROCKIGNEOUS ROCKS: formed when MOLTEN ROCK(magna/lava) cools and solidifies.Mineral crystals form as the molten rock cools.
  • 6. Intrusive igneous rocks versusextrusive igneous rocks
  • 7. Intrusive igneous rocks:When MAGMA coolsVEEEERRRRYYY SLOOOOWLYINSIDE the earth, the igneous rocks formed are calledINTRUSIVE IGNEOUS ROCKS.
  • 8. Intrusive igneous rocks have:LARGE CRYSTALS AND COARSE OR VERY COARSETEXTURE.
  • 9. extrusive igneous rocks:When LAVA cools VERY VERY QUICKLY OUTSIDE theEarth FROM OUT OF A VOLCANO, the igneous rocksformed are called EXTRUSIVE IGNEOUS ROCKS.
  • 10. EXtrusive igneous rocks have:SMALL CRYSTALS OR LOOK LIKE BLACK GLASS (NOCRYSTALS). HAVE FINE TEXTURE OR GLASSY TEXTURE.
  • 11. MAFIC IGNEOUS ROCKS VERSUSFELSIC IGENEOUS ROCKS.
  • 12. MAFIC IGNEOUS ROCKS VERSUSFELSIC IGENEOUS ROCKS.• ROCKS are made of minerals.• Rocks made from dark, high density minerals (iron(Fe) & magnesium(Mg) ) are MAFIC.• Rocks made from light color, low density minerals (Feldspar, silicon and aluminum ) are FELSIC.
  • 13. YOU MUST BE ABLE TO USE ESRT PAGE6 to identify igneous rocks.
  • 14. All the igneous rocks that you mightsee the regents are the ones below:
  • 15. Now turn to page 81 of your greenwork book complete the questions.
  • 16. SEDIMENTARYROCK:
  • 17. SEDIMENTARY ROCK: almost always form ina water environment from THECOMPACTION AND CEMENTATION OFSEDIMENT (ROCK) PARTICLES.
  • 18. Sediment (rock particles) getdeposited, buried, compacted andcemented together. Fossils areusually only found in sedimentaryrocks.
  • 19. SEDIMENTARY ROCK: formed from THECOMPACTION AND CEMENTATION OFSEDIMENT (ROCK) PARTICLES.
  • 20. Turn to ESRT page 7: these are the onlypossible sedimentary rocks you MAYsee
  • 21. Turn to page 89 of your greenworkbook complete the typicalsedimentary rocks questions.
  • 22. METAMORPHICROCK:
  • 23. METAMORPHIC ROCK: FORMED BYHEAT AND PRESSURE APPLIED TOEXISTING ROCKS.
  • 24. There are two types ofmetamorphism: regional andcontact
  • 25. Regional metamorphism:metamorphic rock formed deepunderground by heat and pressure.
  • 26. contact metamorphism: metamorphicrock formed when the heat ofmagma/lava touches rocks.
  • 27. Foliated metamorphic rocks:minerals are aligned in thick bands.
  • 28. DISTORTED BANDING INMETAMORPHIC ROCK
  • 29. ESRT PAGE 8 SHOWS THE SCHEME TOID METAMORPHIC ROCKS.
  • 30. NOW COMPLETE PAGE 96 ONMETAMORPHIC ROCKS.
  • 31. THE ROCK CYCLE: THROUGHGEOLOGICAL FORCES, ROCKS CANTRANSFORM INTO EACH OTHER.COMPLETE PAGE 78.