The life of Rocky Basalt
- Mr. Keys
- Nov 3, 2015
- 2 min read
KWBAT Model the rock cycle
Do Now: Minerals and Rocks Review ( on paper)
Step 1: Read the Paragraph Below
The three major rock types, igneous, metamorphic, and sedimentary, are shown. As you see, each may form at the expense of another if it is forced out of equilibrium with its physical or climatic environment by either internal or surficial forces.
Magma is molten rock. Igneous rocks form when magma solidifies. If the magma is brought to the surface by a volcanic eruption, it may solidify into an extrusive igneous rock. Magma may also solidify very slowly beneath the surface. The resulting intrusive igneous rock may be exposed later after uplift and erosion remove the overlying rock. The igneous rock, being out of equilibrium, may then undergo weathering and erosion, and the debris produced is transported and ultimately deposited (usually on a sea floor)as sediment. If the unconsolidated sediment becomes lithified (cemented or otherwise consolidated into rock), it becomes a sedimentary rock. As the rock is buried theadditional layers of sediment and sedimentary rock, heat and pressure increase.Tectonic forces may also increase the temperature and pressure. If the temperature andpressure become high enough, usually at depths greater than several kilometers belowthe surface, the original sedimentary rock is no longer in equilibrium and recrystallizes.The new rock that forms is called a metamorphic rock. If the temperature gets very highthe rock melts and becomes magma again, completing the cycle.
The cycle can be repeated, as implied by the arrows. However, there is no reason toexpect all rocks to go through each step in the cycle. For instance, sedimentary rocksmight be uplifted and exposed to weathering, creating new sediment.
Today we will get the opprotunity to see exactly how rocks travel throught the life and Times of Rocky Balboa ( or any other name you decide to give your rock)
But First Lets review the rock Cycle
Step 2: Complete the Rock Cycle Review Sheet with your tablemates.
You will have 30 minutes to complete it before we start to explore the Rock Cycle with Rocky Basalt
Step 3: When time is up, When prompted you will look over the Rock cycle game below. Mr. Keys will assign you to a station and hand out the woksheets.
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