To Do	To Answer
Complete the activity	How do the ages of rocks on the seafloor vary? What causes these differences?
Build a model of the seafloor	How does this model describe seafloor spreading and the features of the seafloor?
Watch the Drain the Ocean documentary	Complete the attached worksheet.
Read about Seafloor Spreading	What is the Mid-ocean Ridge? Using the interactive map on this page, how are the locations of spreading centers, plates, earthquakes and volcanoes related? Where does all the "extra" seafloor go?