Plate Tetonic Theory

The plates are moving. On each plate is a continent or ocean. There are different boundaries; they are:

• Transforming- when two plates are moving past each other[many earthquakes]
  
• Converging- when two plates are running into each other


• Diverging- when the plates are moving apart

In the converging boundary, a more dense plate that's going slower than a plate that is going faster will go below the less dense one. When that happens, its called subduction. In a diverging boundary, lava comes through a space that is revealed as the plates move apart. In a transforming boundary, the plates move across each other.

There are layers to the earth. They are:

1. Crust(lithospere)-Thinnest; made of rocks
   
2. Mantle-made of magma; thickest; convection currents in mantle cause the plates on the crust to move
   
3. Outer Core- liquid metal; causes magnetic field


4. Inner Core-solid metal [dense]

Vocab terms to know

Pangea- supercontinent

What Pangea might have looked like

Evidence to support^^^

• puzzle-look of continent borders
  
• landform locations
  
• fossils on two different plates are the same
  

Mid Atlantic Ridge- where a diverging boundary is seperating and causing lava to come out and makes a raised section of rock. It looks like the coasts of South America and Africa, which supports the Pangea idea.

Hot Spot- an opening in the crust that doen't move; pressure from the mantle

This is a picture of the hot spot that caused the Hawaiian islands to form.

CONFERENCES UPDATE

In science this quarter, we have learned about:

weathering-break down of rocks

erosion- moving of material

deposition-settling of material

rocks

-are made of minerals

-properties: luster, color, hardness, density, streak, fracture, grain shape

discover vs. invent

different land forms,

theories vs. laws- t: why/how something happens l: what happens

and, of corse, "What is science," and "How does science work".

We use the class blog, the "ning", and gmail.
We've done differnet projects with our "table" group. We've also worked with students from different class periods. link1 link2

I like that we don't have homework and that its challenging.
We are learning different things about science and how scientists work.
One day we worked on trying to figure out what this blue stuff was. Its called Ooblek. Here's us:





That day, we learned about a continuum. Ooblek registers in between solid and liquid.

Another activity we did, was clay boats. We did it when we were learning about sinking and floating.



things with a density less than 1 float, greater than 1 sink

We even categorized a small amount of rocks. Here's how:

http://api.ning.com/files/8leY9wbYcpSFcJjg9JEVHLwriBiiJiOSld-m892*SzfUNK8v2ZBFZOZml6LwHnRyAnleB2GEg15Dtfz1sgnw5WIOM4OBklzU/photo.jpg

For more videos, go to the classes youtube channel.