2. UNDER CERTAIN CONDITIONS, HOT ROCKS OF THE UPPER MANTLE AND LOWER CRUST MELT FORMING A MOLTEN LIQUID CALLED MAGMA. IGNEOUS ROCKS FORM WHEN MAGMA SOLIDIFIES.

3. * SIZE, SHAPE AND ARRANGEMENT OF MINERAL GRAINS, OR CRYSTALS.

4. 1.) VOLCANIC 2.) PLUTONIC

6. *THESE TYPE OF ROCKS FORM AS A RESULT OF MAGMA SPEWING OUT ON TO THE EARTHS SURFACE. THE LAVA THEN COOLS AND SOLIDIFIES. * THESE ROCKS ARE FAST COOLING AND AS A RESULT HAVE SMALL OR NO CRYSTALS

8. * “GLASS” COOLED FAST UNDER WATER. THERE ARE NO CRYSTALS!!

9. * GASSES BLAST FROM A VOLCANO AND SOLIDIFY, BUT LEAVE MANY AIR BUBBLES IN THE ROCK.

11. * THIS TYPE OF ROCK IS FORMED WHEN MAGMA SOLIDIFIES WITHIN THE EARTH’S CRUST. * THE OVERLYING ROCK INSULATES THE MAGMA LIKE A THICK BLANKET.

12. * MAGMA CRYSTALIZES VERY SSSLLLOOOWWWLLLYYY!! * CRYSTALS GROW OVER HUNDREDS OF THROUSANDS TO MILLIONS OF YEARS.

13. GRANITE IS THE MOST ABUNDANT ROCK IN THE CONT. CRUST

16. * WHEN A ROCK IS FELSIC, IT MEANS IT HAS MORE ALUMINUM THAN OTHER STUFF. (Al) * LOWER DENSITIES EX: GRANITE, RHYOLITE, PUMICE * HAVE LIGHT COLORS *

17. * LOCATED ON THE RIGHT SIDE OF “IGNEOUS ROCK IDEN. CHART. (P.6) *DARKER IN COLOR * HIGHER DENSITIES * MORE IRON(Fe) AND MAGNESIUM(Mg)

18. PUMICE BASALT RHYOLITE GRANITE GABBRO OBSIDIAN

20. * INCREASED HEAT AND PRESSURE UNDERGROUND CREATE THESE ROCKS

21. CHARACTARISTICS -DO NOT MELT -MAY SHOW CRYSTALS IN BANDS -SOMETIMES LOOK LIKE CRYSTALS HAVE MELDED OR SQUISHED TOGETHER -MAY LOOK DISTORTED

24. * THIS USED TO BE SHALE

25. *THIS USED TO BE CLAY OR FELDSPAR

26. * THIS USED TO BE GRANITE

27. *THIS USED TO BE LIMESTONE!!