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
Answer Cooler mantle material sinks because it is more dense than warmer material.
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.
Today’s Activities Drill Analysis – Seafloor Spreading Plate Tectonic Review Conclusion
Explain the process of subduction. Closure Explain the process of subduction.
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.