Chapter 7 Plate Tectonics.

Slides:



Advertisements
Similar presentations
Continents change position over time
Advertisements

Theory that all of the continents were once one large landmass (Pangaea) that has broken up and drifted apart. –Alfred Wegener Evidence –Continents fit.
Ch Restless Continents
Chapter 7: Plate Tectonics Section 2: Restless Continents
Restless Continents.
Restless Continents continental drift: the hypothesis by Alfred Wegener that states that the continents once formed a single landmass, broke up, and drifted.
Objective 5 October 2012 Describe the theory of continental drift.
EVIDENCE OF CONTINENTAL DRIFT.
Chapter 17 Plate Tectonics
Drifting Continents Chapter 4.3.
9.1 Continental Drift.
Ch5 Sec3 Drifting Continents. Ch5 Sec3 What was Alfred Wegener’s hypothesis about the continents? What evidence supported Wegener’s hypothesis? Why was.
Formation of the Earth. Previous Theories  Continental Drift Theory  Developed by Alfred Wegner (1900’s)  Believed continents were once all combined.
1.3 Drifting Continents. I. The Theory of Continental Drift  A. Alfred Wegener, German scientist formed a hypothesis on Earth’s continents.  B. Wegener’s.
What makes the plates of the crust move?  Continental Drift  Pangea  Mid-Ocean Ridge  Convection  Theory of plate tectonics.
Drifting Continents 3.1 notes Continental Drift In 1910, Alfred Wegener hypothesized that all of the continents were once joined together in a single.
Restless Continents. Continental Drift Hypothesis proposed by Alfred Wegener in early 1900’s Said that continents had once been part of a single large.
…to go from this… …to this? Approx. 250 Million Years (hint – look in chapter 10)
Earthquakes, Volcanoes & The Ring of Fire. 1. Convection in Earth’s Mantle—heat from Earth’s core and the mantle itself cause convection currents in the.
4.3 Drifting Continents 9/7/06. I. The Theory of Continental Drift  A. Alfred Wegener, German scientist formed a hypothesis on Earth’s continents. 
Continental Drift and Plate tectonics
EQ: What was Alfred Wegener’s hypothesis and what evidence did he provide to support his hypothesis?
“Restless Continents”. A. One scientist who looked at the pieces of this puzzle was Alfred Wegener. 1. In the early 1900s, he wrote about his hypothesis.
Plate Tectonics Theory that explains the formation and movement of Earth’s plates Theory that explains the formation and movement of Earth’s plates.
 Alfred Wegener wrote about his hypothesis of continental drift in the 1900s.  Continental drift is the hypothesis that states that the continents.
8. 2 Continents change position over time. Learning Goals Students will: -explain how the continental drift hypothesis was developed. -explain evidence.
Chapter 7 Section 2. What You Will Learn  Describe Wegener’s hypothesis of continental drift.  Explain how sea-floor spreading provides a way for continents.
Continental Drift Hypothesis proposed by Alfred Wegener in 1915 The idea that Earth’s continents were once joined in a single landmass and gradually drifted.
Inside Earth: Chapter 1- Plate Tectonics
Inside Earth: Chapter 1- Plate Tectonics
Unit 4 Lesson 6 Plate Tectonics
Unit 4 Lesson 2 Plate Tectonics
PLATE TECTONICS.
The Theory of Continental Drift
Chapter 5 plate tectonics review
Continental Drift.
Learning Objectives I can describe Alfred Wegener’s hypothesis of continental drift. I can explain how sea-floor spreading provides a way for continents.
Unit 4 Lesson 2 Plate Tectonics
Plate Tectonics Table of Contents Drifting Continents
Plate Tectonics.
Continental Drift: The Beginning of Plate Tectonics
Unit 4 Lesson 2 Plate Tectonics
Plate Tectonics Cornell Notes.
Chapter 7.2 Restless Continents pgs
Unit 6 Lesson 4 Plate Tectonics
Land Unit: Plate Tectonics
GEOLOGY Notes PART 1 Alfred Wegener (1912)
Restless Continents Chapter 4: Lesson 2 Page95-98.
Land Unit: Plate Tectonics
Geology Exam Part One Review Session.
(or if you already glued it in your IAN yesterday!)
Land Unit: Plate Tectonics
Unit 1 Lesson 3 Earth’s Plates
Unit 4 Lesson 2 Plate Tectonics
Continental Drift and Seafloor spreading vocabulary
Continental Drift and Seafloor Spreading
_____________________________________________________________________
Science Plate Tectonics
This is a story of 1 Hypothesis and the theory that replaced it
Earth Science- The Earth’s Moving Plates
Chapter 7 Section 2.
It’s all about … CONVECTION CURRENTS!!!!!!.
Continents change position over time
Unit 4 Lesson 2 Plate Tectonics
Wegener’s Continental Drift Hypothesis
Chapter 4 in Old Textbook – pg. 115
Chapter 4 Plate Tectonics
7.2 Drifting Continents Objectives: What is continental drift?
Science Plate Tectonics
EQ: What is the theory of continental drift?
Presentation transcript:

Chapter 7 Plate Tectonics

Chap 7, Sec 2 (Restless Continents) Objectives: What is continental drift? How do landforms, fossils, and climate changes show evidence of the changing surface of the Earth? Explain how sea-floor spreading provides a way for continents to move.

Explain how magnetic reversals provide evidence for sea-floor spreading.

Tech Terms: Alfred Wegener – German scientist whom in the 1900’s hypothesized that the continents had once been a huge landmass which he called Pangaea (“all lands”).

continental drift – the slow movement of continents over Earth’s surface. It was a hypothesis, that was tested. fossil – any trace of an ancient organism that has been preserved in sedimentary rock.

BEHIND THE HYPOTHESIS: THE SCIENTIST BEHIND THE HYPOTHESIS: Alfred Wegener http://study.com/academy/lesson/alfred-wegeners-theory-of-continental-drift.html

4. mid-ocean ridge – longest chain of mountains extending into all of Earth’s oceans, that curves like the seam of a baseball along the sea floor.

5. sea floor spreading – the process that adds new material to the ocean floor at the mid-ocean ridge. Molten material erupts and spreads out through the valley that runs along the center of the mid-ocean ridge. It then pushes aside the rock that was already there.

FURTHER EVIDENCE http://www.pbslearningmedia.org/resource/ess05.sci.ess.earthsys.wegener2/plate-tectonics-further-evidence/

Wegener used evidence from landforms, fossils, and climate to support his hypothesis. Wegener’s hypothesis was rejected because he could not provide an explanation for the force that pushes and pulls the continents.

It’s all about … CONVECTION CURRENTS!!!!!!