TEXTURE OF ROCK.. THE SIZE, SHAPE AND POSITIONS OF THE PIECES INSIDE A ROCK.. 3 TYPES= FINE GRAINED, COARSE GRAINED AND MEDIUM GRAINED ROCKS ARE MADE OF MINERALS, BUT MINERALS ARE NOT MADE OF ROCKS.

FINE GRAINED TEXTURE  WE DON’T EASILY SEE WHAT IS INSIDE THE ROCK..  COOLS FAST, CRYSTALS DON’T LAST  EXAMPLE=TOMATO SOUP

MEDIUM GRAINED TEXTURE  WE SEE SOME OF THE PIECES INSIDE THE ROCK BUT NOT ALL OF THEM  MEDIUM=CRYSTALS SOME  EXAMPLE=OREO COOKIE

COARSE GRAINED TEXTURE  WE CAN EASILY SEE THE PIECES INSIDE THE ROCK  COOLS SLOW=CRYSTALS SURE CAN GROW  EXAMPLE=A SALAD OR “THE WORKS” PIZZA

A ROCK’S COMPOSITION  THE PERCENTAGE OF THE MINERALS THAT MAKE UP A ROCK..  EXAMPLE= GRANITE IS MADE UP OF..  10% MICA  55% FELDSPAR  35% QUARTZ

COME IN SILENTLY AND…  READ OVER TODAY’S SONG VERSES AND CHORUS..  UNDERLINE ANY MINERAL OR SCIENCE TERMS YOU SEE IN EACH VERSE  UNDERLINE ANY MINERAL OR SCIENCE TERMS YOU SEE IN THE CHORUS…  BE READY TO CHECK WITH MR.L

NEW COPY ORANGE START UP BOX #2  1. A NON-SILICATE MINERAL DOES NOT HAVE…  2. THE REFLECTION OF LIGHT OFF OF A MINERAL’S SURFACE IS…  3. THE COLOR OF A MINERAL’S POWDER IS…  4. _____LUSTER IS OFTEN SHINY.  5. THE RESISTANCE TO BEING SCRATCHED IS_________

ORANGE START-UP BOX#3  1. THE PERCENTAGE OF MINERALS INSIDE A ROCK IS….  2. _____ARE MADE OF MINERALS, BUT MINERALS ARE NOT MADE OF_____.  3. THE SIZE AND SHAPE OF THE PIECES INSIDE THE ROCK ARE CALLED____.  THE THREE TYPES OF TEXTURE ARE.4.____GRAINED, MEDIUM- GRAINED AND 5.________GRAINED

ORANGE START UP BOX #4  1.GRANITE IS MADE OF 10% MICA, 55% FELDSPAR AND 35% QUARTZ.=….  2. A TEXTURE WHERE WE EASILY SEE ALL THAT IS INSIDE IS…  3. A TEXTURE WHERE WE SEE SOME, BUT NOT ALL INSIDE IS..  4. A TEXTURE WHERE WE DON’T SEE EASILY WHAT IS INSIDE IS…  5. A PEPPERONI PIZZA=_____GRAINED

NEW ORANGE START UP BOX #1  1.SILICON + OXYGEN=____MINERAL  2. NO SILICON AND NO OXYGEN=__MINERAL  3. EARTH IN CENTER/PTOLEMY=  4. 2 PLATES SLIDE BY OR SLIP PAST AND EARTHQUAKES FORM=_____PLATE BOUNDARY  5. WHEN A MINERAL BUBBLES/FIZZES WHEN AN ACID HITS IT IT SHOWS A…

A MINERAL IS…  NATURALLY FORMED-NOT MADE BY YOU OR ME  ROCKS ARE MADE OF MINERALS, MINERALS ARE NOT MADE OF ROCKS.

A MINERAL IS…  INORGANIC OR NON-LIVING

A MINERAL IS…  SOLID, NOT LIQUID OR GAS

A MINERAL HAS…  A REPEATING CRYSTALLINE STRUCTURE…THIS MEANS THE ARRANGEMENT OF ATOMS ON THE INSIDE GIVES THE MINERAL ITS SHAPE  ON THE OUTSIDE  CHECK OUT MR. L’S VISUAL EXAMPLES OF THIS NOW!!!

Identifying Minerals  Each mineral has its own specific properties used to identify it.

Color  The same mineral can come in a variety of colors Ex. quartz  Impurities & other factors can change mineral appearance  Color is not the best way to identify minerals

Luster  Describes how a surface reflects light Ex. shiny/dull  Metallic- minerals containing metals are often shiny  Nonmetallic Vitreous- glassy, brilliant Silky-fibrous Resinous-plastic Waxy- greasy, oily Pearly- creamy Earthy- rough, dull

Streak  Color of mineral in powder form  Observed by rubbing a mineral against a piece of unglazed porcelain called a streak plate  Streak doesn’t vary like color & is often different than a mineral’s color  More reliable than color

Cleavage and Fracture  Way a mineral breaks apart determined by arrangement of atoms  Cleavage- breaks along flat surfaces  Fracture- mineral breaks in an irregular way

Hardness  Minerals resistance to being scratched  Ranks minerals from softest to hardest  Talc- softest known mineral  Diamond- hardest known mineral

Hardness

Density  Mass in a given space/ mass per unit volume  D= M/V  Density remains same regardless of sample size  Mass determined using balance  Volume determined using water displacement method  Comparisons can be made by hefting  Specific Gravity- ratio of an object’s density to the density of water

Special Properties  Fluorescence- minerals glow under ultraviolet light, ex. fluorite & calcite  Magnetism- ex. Magnetite  Radioactive- ex. contain radium or uranium  Effervescence- mineral fizzes (releases carbon dioxide) when in contact with hydrochloric acid=chemical reaction/double image.. Calcite  Halite=salty taste

Pictures of special properties…

ROCK VOCAB/FOOD COMPARISON LAB WORK  COMPARE THE ROCK TERM WITH THE FOOOD ITEMS ON EACH TRAY. PLEASE DO NOT MOVE THE FOOD ITEMS OFF THE TRAY.  EXPLAIN AND ADD A DRAWING OF HOW THE SPECIFIC FOOD ITEM ON THE TRAY MATCHES WITH THE TERM AND DEFINTION IT IS NEXT TO.  GROUP DISCUSSION IS A PLUS!!!!

FOOD COMPARISON/ROCK VOCAB  1. ROCK8.EROSION  2. IGNEOUS ROCK9.WEATHERING  3.EXTRUSIVE IGNEOUS10.DEPOSITION  4. INTRUSIVE IGNEOUS11.SEDIMENT  5. SEDIMENTARY ROCK12.METAMPORPHIC  6. CEMENTATION13. FOLIATED META  7. COMPACTION14. NON-FOLIATED META  15. COMPOSITION16. TEXTURE  17.FINE GRAINED TEXTURE  18.COARSE GRAINED TEXTURE  19. THE ROCK CYCLE