Metamorphic rocks Ms. Steele

formation What is a sedimentary rock?What is a sedimentary rock? Pushing the paper towel together creates a bulge. What might this be in relation to the Earth?Pushing the paper towel together creates a bulge. What might this be in relation to the Earth? What happened after we added water?What happened after we added water?

Yummy rock time! Do NOT eat the candy until told to do soDo NOT eat the candy until told to do so 1. Look at the cut side of the candy bar. Sketch the appearance of the cut side1. Look at the cut side of the candy bar. Sketch the appearance of the cut side 2. Place a piece of wax paper underneath and above the candy.2. Place a piece of wax paper underneath and above the candy. 3. Using your hands, flatten the candy bar3. Using your hands, flatten the candy bar 4. Reexamine the cut side of the candy bar and sketch it4. Reexamine the cut side of the candy bar and sketch it

Our results What did your candy look like before?What did your candy look like before? What did your candy look like after you crushed it?What did your candy look like after you crushed it? What does the candy represent?What does the candy represent? Did your original sketch have layers?Did your original sketch have layers? How does this activity describe the formation of metamorphic rocks?How does this activity describe the formation of metamorphic rocks? What would happen if we applied heat?What would happen if we applied heat?

It’s getting hot in here! Rocks undergo transformationsRocks undergo transformations Metamorphic=to change shapeMetamorphic=to change shape Meta=about itselfMeta=about itself Morph=to change shapeMorph=to change shape Ic=about or pertaining toIc=about or pertaining to “About changing the shape of itself”“About changing the shape of itself” If sedimentary and igneous rocks undergo high pressures and temperatures, they may be changed into metamorphic rocksIf sedimentary and igneous rocks undergo high pressures and temperatures, they may be changed into metamorphic rocks Deep in the EarthDeep in the Earth

Metamorphic Contact Metamorphism Contact Metamorphism Heated by nearby magmaHeated by nearby magma Higher temperature  rock composition change  new rock with new mineralsHigher temperature  rock composition change  new rock with new minerals

metamorphic Regional Metamorphism Regional Metamorphism Pressure builds up in rocks that is deep within the EarthPressure builds up in rocks that is deep within the Earth Large pieces of Earth’s crust collide  rock deformed and chemically changed by heat and pressureLarge pieces of Earth’s crust collide  rock deformed and chemically changed by heat and pressure

foliated Foliated Foliated Aligned grains of flat mineralsAligned grains of flat minerals

Non-foliated Non-Foliated Non-Foliated Mineral grains are not arranged in plains or bandsMineral grains are not arranged in plains or bands

Matching card game Each group will receive one cardEach group will receive one card First group will be told to read their card aloudFirst group will be told to read their card aloud Each card has an answer and a questionEach card has an answer and a question Read the question aloud; a different group has the answer on their card. They will raise their hands, say the answer, and ask their question, etc.Read the question aloud; a different group has the answer on their card. They will raise their hands, say the answer, and ask their question, etc.

Have a gneiss day!