The Theory of Continental Drift Continental drift was proposed by Alfred Wegener He used the following ideas to support his theory: 1. The fit of the.

Slides:



Advertisements
Similar presentations
WARM-UPS #1 Use your p to answer the questions. Use your p to answer the questions. 1. What type of boundary occurs where plates collide?
Advertisements

The Dynamic Interior of the Earth
The History of Tectonic Theory Presented by Doug Winans Grade Levels 5-8.
The Theory of Continental Drift
Plate Tectonics The Dynamic Interior of the Earth.
The observation that the continents fit together like puzzle pieces, and may once have been connected, led Alfred Wegener to propose a theory in 1910 called.
Continental Drift Alfred L. Wegener Untold tragedies of Continental Drift..
Theory of Continental Drift
Plate Tectonics How did a glacier form over hot, arid Australia?
A WEBQUEST Pangaea – The Supercontinent. Do You Think the World Has Always Looked Like This?
If you look at a map of the world, you may notice that some of the continents could fit together like pieces of a puzzle…..the shapes of the coastlines.
Continental Drift. What is continental drift? 1912 Alfred Wegener Hypothesized that- the continents are moving = Continental drift all continents once.
Guided Notes about Continental Drift
CONTINENTAL DRIFT. The Theory of Continental Drift  Proposed by Alfred Wegener in 1900.
Continental Drift.
Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
E.S. Plate Tectonic Notes Continental Drift Continental Drift  Alfred Wegener, in 1912 noticed that the continental shorelines on either side of the Atlantic.
C. Continental Drift Looking at a map of the Earth, it appears that the continents could fit together like a jigsaw puzzle. Alfred Wegener (1912) proposed.
Chapter 4: Plate tectonics The evidence for the theory of plate tectonics has been accumulating for 400 years. It is only since the 1960’s that this theory.
WARM-UP # 52 What is ONE piece of evidence that the continents were once all joined together? You know two – fit together like a puzzle and matching fossil.
EQ: How do lithospheric plates move and how do they affect the Earth’s surface?
Continental Drift and Sea Floor Spreading
Chapter 17.1 Plate Tectonics.
Pangaea  Alfred Wegener was a German climatologist and arctic explorer who suggested the concept of continental drift.  Continental drift is the idea.
Continental Drift Theory
Continental Drift.
Evolution and Change Chapter Fourteen: Earth and Life History 14.1 Evidence from Rocks 14.2 How Earth Changes 14.3 Natural Selection.
PLATE TECTONICS: PART 1 The Theory of Continental Drift Early in the 1900’s, Alfred Wagener proposed a theory, and suggested evidence for it. It was not.
Continental Drift. Note the Shapes South America & Africa: They Match! What about any others? North America?
Target What is continental drift?. Continental Drift The theory that continents can drift apart from one another and has done so in the past.
The Theory of Continental Drift. Continental Drift Theory Proposed by Alfred Wegener in million years ago, all of the continents were combined.
…to go from this… …to this? Approx. 250 Million Years (hint – look in chapter 10)
The Theory of Continental Drift. Continental Drift Theory Proposed by Alfred Wegener in million years ago, all of the continents were combined.
Plate Tectonics Drifting Continents. Pangaea  The Earth once had a single landmass that broke up into large pieces, which have since drifted apart. This.
Plate Tectonics and Continental Drift. Continental Drift Alfred Wegener believed that the continents were once connected. This large continent was called.
PANGAEA YEAR 1 SCIENCE. EQ: WHAT EVIDENCE DID ALFRED WEGENER USE TO PROVE CONTINENTAL DRIFT?
Restless Continents 9/30/15
Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 4 main layers. 1.Crust (rock) 2.Mantle (rock) 3.Outer Core (metal) 4.Inner Core (
Plate Tectonics. Plate Tectonics is a theory that describes the formation, movements, and interactions of Earth’s plates.
Continental Drift. Continental Drift Theory Proposed by Alfred Wegener in million years ago, all of the continents were combined into one super-continent.
Plate Tectonics.
m/watch?v=hSdlQ8x7 cuk. The Theory of Continental Drift.
Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 4 main layers. 1.Crust (rock) 2.Mantle (rock) 3.Outer Core (metal) 4.Inner Core (
The Story of the Discovery of Plate Tectonics In 1915 a German scientist named Alfred Wegener proposed hypothesis called CONTINENTAL DRIFT The same fossils.
World Explorations By 1570, European explorers had mapped most of the Earth. People looked at these maps and began to notice, what?
The Theory of Continental Drift
CONTINENTAL DRIFT. HOW MANY CONTINENTS ARE THERE? 7- North America, South America, Africa, Europe, Asia, Australia, Antarctica.
Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 3 layers. 1.Crust 2.Mantle 3.Core.
Evolution and Change Chapter Eleven: Evolution Chapter Twelve: Earth and Life History.
Chapter 10 Section 1 Notes Continental Drift.
CHAPTER 2 Plate Tectonics and the Ocean Floor (I)
Drifting Continents Chapter 5 Section 3.
The Theory of Continental Drift
Drifting Continents EQ: What are the lines of evidence that led Wegner to suggest that he Earth’s continents have moved?
The Theory of Continental Drift
Continental Drift: An Idea Before Its Time
Continental Drift.
Drifting Continents Did Pangea Exist?.
Drifting Continents Did Pangea Exist?.
CHAPTER 2 Plate Tectonics and the Ocean Floor
The Dynamic Earth.
The Theory of Continental Drift
The Theory of Continental Drift
Drifting Continents Did Pangea Exist?.
Earth’s Structure and Pangaea
Drifting Continents.
Continental Drift.
The Theory of Continental Drift
Topic: Continental Drift
The Theory of Continental Drift
Presentation transcript:

The Theory of Continental Drift

Continental drift was proposed by Alfred Wegener He used the following ideas to support his theory: 1. The fit of the continents 2. The distribution of fossils 3. Similar sequence of rocks 4. Ancient climates 5. The wandering of the Earth's polar regions Wegener used his observations to hypothesize that all of the present-day continents were once part of a single supercontinent called Pangaea

The Fit of the Continents animation

Fossils of the same species were found on several different continents. For example, Glossopteris, a fern, was found on the continents of South America, Africa, India, and Australia. If the continents are reassembled into Pangaea, the distribution of Glossopteris can be accounted for over a much smaller area.

Distribution of Similar Fossils

Continental Drift - Rock Sequences

Continental Drift - Glaciation

Sea-Floor Spreading In 1962, Harry Hess proposed that new ocean floor is formed at the mid-ocean ridges. The ocean floor is produced by magma that rises from the Earth’s interior. Hess suggested that the ocean floor moved away from the ridge and plunged into an oceanic trench along the continentals.