1. Warm-Up January 22 Write What You Know!
Write everything you know about the prompt below for five minutes, try for at least 3-4 complete sentences.
Explain the three major types of evidence that support the idea of sea-floor spreading.

2. Plate Tectonics Notes
(Chapter 1.5)

3. Plate Tectonics Lithosphere: Theory of Plate Tectonics:
The crust and upper mantle
Rigid, broken into plates (continental plates, tectonic plates)
Theory of Plate Tectonics:
The plates of Earth’s lithosphere are in slow, constant motion, driven by convection currents in the mantle
Incorporates the Theory of Continental Drift
As plates move: colliding, moving apart, moving past each other, changes such as mountains, volcanoes, and deep-ocean trenches occur

4. Plate Tectonics Plate boundary: Fault:
Where the tectonics plates meet each other, these breaks in the Earth extend throughout the lithosphere
Fault:
Smaller breaks in the lithosphere, often form along plate boundaries
Associated with earthquakes

5. Types of Boundaries Divergent Boundary:
The place where two plates diverge, or move apart
Along ocean-ocean boundary, mid-ocean ridge occurs
Along continent-continent boundary, rift valley occurs

6. Rift Valley

7. Types of Boundaries Convergent Boundary:
Where two plates converge, or come together
continent-continent boundary forms mountains
continent-ocean boundary forms mountains, volcanoes, and a deep-ocean trench

8. Indian Subcontinent

9. Types of Boundaries Transform Boundary:
Where two plates slide past each other in opposite directions
Earthquakes most frequent along transform boundaries