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Divergent Plate Boundaries Use this PPT for p. 9 in your INB! How they happen!
Divergent means: moving apart. “di-” means: two (think of divide or dissect)
Where in the World is this Boundary???
1. The Mid-Atlantic Ridge (or any mid- ocean ridge)
2. Iceland, which is splitting apart down the middle because it’s on the Mid- Atlantic ridge.
3. East Africa, which is splitting apart into thirds.
What are the resulting landforms of a divergent boundary???
(1) Rift Valleys The Álfagjá Rift Valley in southwest Iceland Most of the world’s rift valleys are on the ocean floor.
(2) Mid-Ocean Ridges (3) New Oceans (4) Volcanoes & (5) Shallow Earthquakes
Theory of Plate Tectonics Plate Tectonics Plate Boundaries Causes of Plate Tectonics.
1.How do the rocks of the crust and lithosphere compare? Rocks in the crust are less dense and made mainly of granite. The rocks in the lithosphere are.
How Do Earths Plates Move? Chapter 1, Section 2, pD14-19.
HDWK Mid Ocean Ridges –Detected a long time ago Molten Material (go look! Pillow Lava!) Magnetic Stripes Drilling Samples Subduction and Deep Ocean Trenches.
Chapter 8: Plate TectonicsChapter 8: Plate Tectonics 8.1: Earth has several layers 8.2: Continents change position over time 8.3: Plates move apart 8.4:
Topic: Earth’s Features Essential Question: What crustal features are created by the movement of Earth’s plates?
Chapter 12 Section 1. What is a Volcano? Opening in the Earth (called a vent) that erupts gases, ash, and lava. –Volcanic mountains result from the build-up.
What do you notice about these two pictures? The Earth’s surface is broken into rigid plates that move in relationship to one another.
Plate Tectonics 6.E.2.2 Explain how crustal plates and ocean basins are formed, move and interact using earthquakes, heat flow and volcanoes to reflect.
Plate Tectonics. Brief Structure of the Earth Divided into layers: –Core, mantle, crust.
Landforms (Relief Features) associated with plate boundaries ? ? ?
Chapter 19 Plate Tectonics. Alfred Wegener l A man with an idea. l In 1912 l Noticed similar shapes l similar fossils l Similar rock structures l Similar.
Some questions we will answer today: –How is the earth always changing? –What forces inside the earth create and change landforms on the surface? –What.
Plate Tectonics. What is the Theory of Continental Drift?
CLICK ON THE YELLOW CIRCLE TO GO TO THE NEXT SLIDE How Earthquakes Shape and Alter the Earth’s Surface.
Our Changing Earth. What is a Theory? In science, its almost the same as a fact Must be some sort of evidence to support a theory Even with evidence there.
Copyright © Houghton Mifflin Company. All rights reserved. Essentials of Geology, 1b–1 Plate Tectonics A geological theory that states that pieces of Earth’s.
Where is Andros??. Mercator Projection World Ocean.
The Theory of Plate Tectonics. Plate Tectonics Plate tectonics is the theory that explains why and how continents move. By the 1960s evidence supported.
Plate Boundaries and Plate Interactions. Goals Classify and label the types of movement at plate boundaries, using a world map that shows relative plate.
The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.
A mid-ocean ridge is an underwater mountain range, typically having a valley known as a rift running along its spine, formed by plate tectonics.
Plate Tectonics Lynn Hahn. Tectonic Plate Theory Theory that explains the movement of continents across the globe. It explains why some earthquakes occur.
Plate Tectonics. The Earth's surface is made up of a series of large plates (like pieces of a giant jigsaw puzzle). These plates are in constant motion.
The Theory of Plate Tectonics. The lithosphere is divided into separate sections called plates. The plates carry continents and ocean crust or both.
Do Now # 4 What is the difference between convergent, divergent, and transform boundaries?
Warm Up 11/ What hypothesis states that the continents were once joined to form a single supercontinent? a. continental driftc. plate tectonics.
Imagine the Earth as a hardboiled egg……………………. The thin brittle shell is the crust that humans live on. The thick jelly like white is the deep hot magma.
The location of tectonic activity Identify, describe and explain the patterns of Earthquakes and Volcanoes.
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