1. Saturday, December 08, 2018 A-Day
Objective: YWBAT review Chapter 7 material.
Drill: When convection takes place in the mantle, why does cooler material sink, while warmer material rises?
Homework
Study WOW – quiz tomorrow

2. Answer
Cooler mantle material sinks because it is more dense than warmer material.

3. Did you know…?
Convection currents circulate material deep inside the Earth in a long, slow movement. A single particle can take hundreds of millions of years to make a complete circle.

4. Today’s Activities Drill Analysis – Seafloor Spreading
Plate Tectonic Review
Conclusion

5. Explain the process of subduction.
Closure
Explain the process of subduction.

6. Conclusion Answer
A denser oceanic plate is forced beneath a less-dense oceanic or continental plate at a convergent boundary. Gravity pulls the oceanic plate into the asthenosphere, where it begins to melt.