Bell Work 9/27/2017 Get your comp book! Add com book page 16 “3 Types of Rocks”

Waves dropping sand on the beach Weathering, Erosion, or Deposition Waves dropping sand on the beach Deposition

Caves being formed by acid rain dissolving underground limestone Weathering, Erosion, or Deposition Caves being formed by acid rain dissolving underground limestone Weathering

Wind blowing sand from one location to another Weathering, Erosion, or Deposition Wind blowing sand from one location to another Erosion

Weathering, Erosion, or Deposition Water getting into cracks, freezing, and breaking the rocks or pavement apart Weathering

Ponds filling up with sediment and becoming marshes Weathering, Erosion, or Deposition Ponds filling up with sediment and becoming marshes Deposition

Today’s Goals: Describe the processes that drive the rock cycle. Identify the three different types of rocks.

Comp book page 16 3 Types of Rocks

Igneous Rock Ex. Granite Ex. Rhyolite Intrusive: *Cools beneath earth’s surface *Cools very slowly *Creates large crystals Extrusive: *Cools above earth’s surface *Cools quickly *Creates very small crystals Formed by melting and cooling Two types Ex. Granite Ex. Rhyolite

Sedimentary Rock Formed by compacting and cementing Has strata (layers) Layers from deposition contains fossils EXAMPLES: Conglomerate Sandstone Siltstone Shale Limestone

Metamorphic Rock Examples: Marble Slate Schist Formed by heat/pressure Deep in the Earth Foliated=grains are in bands Nonfoliated=grain are not in bands Recrystallization=crystals change in size or minerals change in composition Examples: Marble Slate Schist

Metamorphic Rock

ROCK IDENTIFICATION: Which rock is it??

Which type of rock might contain evidence of past life? #1 Which type of rock might contain evidence of past life? Sedimentary

Which type of rock contains large crystals? #2 Which type of rock contains large crystals? Igenous

Which type of rock has visible, flat layers? #3 Which type of rock has visible, flat layers? Sedimentary

Which type of rock changes by intense heat and pressure? #4 Which type of rock changes by intense heat and pressure? Metamorphic

#5 Which type of rock forms from sediments compacting and cementing together? Sedimentary

Which type of rock comes from liquid rock material (magma)? #6 Which type of rock comes from liquid rock material (magma)? Igenous

Which type of rock has 2 types: extrusive and intrusive? #7 Which type of rock has 2 types: extrusive and intrusive? Igenous

Which type of rock is formed deep within the earth? #8 Which type of rock is formed deep within the earth? Metamorphic

Which type of rock has wavy banding called strata? #9 Which type of rock has wavy banding called strata? Metamorphic

Which type of rock is formed from magma that cools down? #10 Which type of rock is formed from magma that cools down? Igenous

Show what you know… Can a sedimentary rock be made from metamorphic rocks? Why or why not?

Rock Identification Activity At each station, there is a different rock. Observe the rock in great detail. Use the guide to identify the rock as either a SEDIMENTARY, METAMORPHIC, or IGNEOUS rock. Challenge! If time allows, use the second key to identify the specific name for the rock. Rotate on the SQUEAK!