1. Today’s Agenda…1/11/13
Bellringer: Compare the Earth’s inner and outer core.
Finish Foldable
BrainPop on Earth’s Layers
Quiz on Monday
Begin Notes on Earth’s Plates (SP#3)

2. Review: What Layer Am I???
Is it getting hot in here or is it just me? I am the hottest of all Earth’s layers.
You walk on me all day and you don’t even stop to say hi!
Wow! I’m really feeling the pressure. I’m the layer of Earth’s crust that experiences the most pressure!

3. Review
If Earth were a peach, I’d be the part you would like to eat. I’m just below the outer covering, the crust!
I share part of my name with another layer. But that guy is always a solid, I just like to go with the flow, I’m a liquid.

4. Review
Erosion changes the way I look, it just wears away at me every year.
Do you like your refrigerator magnets? Then thank me!
Just call me silly, silly putty. I’m kind of a solid, but I still flow.

5. Review
I don’t have to eat my cereal or take my vitamins……I’m made up of iron!
I like to spend my days soaking in the sun and floating around on the hot mantle.

6. Earth’s Moving Plates
Study Pack #3

7. Today’s goals… I can explain how Earth’s plates move.
I can explain why Earth’s plates move.

8. Earth’s Plates
Earth’s lithosphere is the upper part of the mantle and the crust
The lithosphere is broken up into pieces called tectonic plates
They float on the mantle
Different sizes and shapes

9. Earth’s Plates

10. Earth’s Plates The plates move very slowly About 2cm/year
This has caused the position of the continents to change over the years
The movement of these plates can also cause changes in Earth’s surface

11. Plate Boundaries The places where the edges of plates meet
Plates experience stress at boundaries
Convergent
Divergent
Transform

12. Plate Boundaries Convergent Plates move toward each other
Plates experience a type of stress called compression(pushing)
The plates crumple up and form mountains
Sometimes one plates goes under the other - subduction

13. Plate Boundaries Divergent Plates move away from each other
Plates experience a type of stressed called tension(pulling)
New crust is formed causing a ridge

14. Plate Boundaries Transform Boundary Plate move past each other
A type of stress called shearing occurs
This causes faults or cracks in the crust
Earthquakes can occur here

15. Why do the plates move?
Convection currents in the mantle behave like a conveyor belt to move the plates

16. Exit Slip
Identify the plate boundary
Convergent
Divergent
Transform