About This Chapter
Earth's Tectonic Plates - Chapter Summary
Use these lessons to get information on theories about plate tectonics and continental drift. Examine the Earth's tectonic plates. Look at theories and evidence for plate tectonics, including paleomagnetism and ocean drilling. Learn about sea floor spreading. After watching these lessons, you should know about:
- Definition and theory of Pangaea
- Plate tectonics theory
- Evidence for continental drift
- Major plates of the lithosphere
- How ocean drilling provides evidence for plate tectonics theory
- Ways that hot spots and paleomagnetism offer evidence for plate tectonics theory
- Relationship between sea floor spreading and polar reversal
You can watch these lessons at your own pace, on a computer or mobile device, whenever you have a few extra minutes. The quizzes that accompany each lesson let you gauge your knowledge and see where additional study is needed. Embedding video tags in the lesson's timeline makes it easy to return to particular passages that require additional review.
1. What is Pangaea? - Theory & Definition
The continents you know have existed for a long time, but not in their current locations. In fact, over 200 million years ago Pangaea broke apart by plate tectonic movement to form the continents we see today.
2. What is Plate Tectonics? - Definition, Theory & Components
Imagine ice floating in a glass. Would you believe that we are all living on giant pieces of floating rock, just like the ice in that glass? This lesson explains that theory, an idea known as plate tectonics.
3. Theory and Evidence of Continental Drift
If you've ever flown to Europe, you know that it's a long flight. However, if the theory of continental drift has anything to say about it, that flight is only going to get longer. That's right - we are drifting away from Europe!
4. Major Plates of the Lithosphere: Earth's Tectonic Plates
The outer shell of the earth, the lithosphere, is broken up into tectonic plates. The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate.
5. Ocean Drilling as Evidence for Plate Tectonics
The Deep Sea Drilling Project extracted samples of the ocean floor that provided evidence to support the hypothesis of seafloor spreading and the theory of plate tectonics. Learn how these samples provided proof.
6. Paleomagnetism and Hot Spots: Evidence for Plate Tectonics
Paleomagnetism is the study of past magnetic fields. Hot spots are fixed pockets of heat that well up to form volcanic features. Learn how paleomagnetism and the study of hot spots provide evidence that supports the theory of plate tectonics.
7. Sea Floor Spreading and Polar Reversal
Sea floor spreading is the process by which new oceanic crust is formed by the upwelling of magma through diverging tectonic plates. Learn about the relationship between sea floor spreading and polar reversals detected on the ocean floor.
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Other chapters within the NYSTCE Earth Science (008): Practice and Study Guide course
- Foundations of Scientific Inquiry
- Earth's Spheres & Internal Structure
- The Earth and Sky
- The Moon
- The Sun's Structure, Energy and Cycle
- The Orbits of Celestial Bodies
- Newton's Laws of Motion and Gravitation
- Star Types & Significance
- Measuring the Characteristics of Stars
- Layout, Formation and Dating of the Solar System
- Characteristics of Our Solar System's Planets
- The Milky Way Galaxy
- Key Theories of the Universe
- The Atmospheric Cycle
- Solar Radiation and Energy
- Atmospheric Moisture and Effects on Precipitation
- Air Distribution & Movement
- Weather Forecasting & Analysis
- Weather Conditions and Disturbances
- Causes and Effects of Climate Change
- Minerals & Rocks
- Weathering & Erosion
- Geologic Time & Dating
- Water Cycle & Balance
- Flowing Water
- Ground Water Systems
- Oceans & Shorelines
- Basics of Coastal Hazards
- NYSTCE Earth Science Flashcards