Tandilia.pdf
1 CONTINENTAL DRIFT & PANGAEA In 1912, Alfred Wegener proposed the idea that the continents were once part of a huge land mass, called Pangaea (all lands),
Sea-Floor Spreading Key Concepts What is the process of sea-floor spreading? What is the evidence for sea-floor spreading? What happens at deep-ocean trenches?
FQ: How could continents move apart? 1. Think, pair, share 2. Write your ideas in your scientist notebook.
Introduction to Landform Study Chapter 13. The Structure of the Earth Four Regions The Crust The Mantle The Outer Core The Inner Core.
Sea-Floor Spreading
Section 12-2. Midocean Ridges Underwater mountains Ex. Mid-Atlantic Ridge Form the smallest mountain chains They have a great amount of volcanic activity.
TB Chapter 13
Earth Science Section 17.2 – Seafloor Spreading. Objectives Summarize the evidence that led to the discovery of seafloor spreading. Explain the significance.
Earth’s Spreading Ocean Floor
