Week 10

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Week 10


Lab:

We melted starburst to create each of the different types of rocks. Sedimentary, igneous, and metamorphic.



Cooling-
EXTRUSIVE: Exit earth,  cool fast (water/air) small crystals

INTRUSIVE: Inside earth, insulated by earth, large crystals

Weathering and Erosion-
Mechanical/Physical: Does NOT change the rock
Chemical: Changes the rock



Assessments:

You can't see the growth of a student unless you know where they start. 

Layers of the earth:

Core inner core- solid

Core outer core. 

Mantle- liquid

Crust

How do we know the crust is solid?

When an earthquake happens in the crust and is measured with a seismograph, just like ripples in a pond when the earthquake hits something solid we feel the echos of it back on the surface. The side that the earthquake didn't hit is a dead spot, meaning it is solid because it could not go through. 

Notes:

  • Continental plates are two converging boundaries shift one goes over the other and creates a mountain. 
  • Two oceanic plates hit each other and it creates a mountain
  • Convection currents create divergent boundaries. 
  • Off the edge of Hawaii is a volcano that erupts and is creating an island, but as the plates shift its moving creating an island chain. The plate is drifting away and new volcanos pop out and create new islands.  
Lecture Notes:
  • Weathering breaks a rock down
  • Erosion moves it with wind, rain, etc.
  • Law of superposition, oldest rock is on the bottom, things get deposited over time. The deeper you dig the farther back in time we see. 

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