TEXTURE OF ROCK..THE SIZE, SHAPE AND POSITIONS OF THE PIECES INSIDE A ROCK..3 TYPES= FINE GRAINED, COARSE GRAINED AND MEDIUM GRAINEDROCKS 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. ROCK 8.EROSION 2. IGNEOUS ROCK 9.WEATHERING 3.EXTRUSIVE IGNEOUS10.DEPOSITION 4. INTRUSIVE IGNEOUS11.SEDIMENT 5. SEDIMENTARY ROCK12.METAMPORPHIC 6. CEMENTATION 13. FOLIATED META 7. COMPACTION 14. NON-FOLIATED META 15. COMPOSITION 16. TEXTURE 17.FINE GRAINED TEXTURE 18.COARSE GRAINED TEXTURE 19. THE ROCK CYCLE