Earth's Dynamic Geology

📋 Course Outline

1. Earth's Layers
2. Plate Boundaries
3. Types of Plate Movements
4. Volcano Types
5. Earthquake Features
6. Earthquake Measurement
7. Volcanic Impacts
8. Living Near Volcanoes

📖 1. Earth's Layers

🔑 Key Concepts & Definitions

• Inner Core: A solid ball composed primarily of iron and nickel, extremely hot, and under immense pressure, which keeps it in a solid state despite the high temperature.
• Outer Core: A liquid layer surrounding the inner core, made of molten iron and nickel, responsible for generating Earth's magnetic field.
• Mantle: The thickest layer of Earth, made of semi-molten rock called magma, which flows slowly and drives plate movements through convection currents.
• Oceanic Crust: The thinner, denser, and younger part of Earth's crust that sinks beneath continental crust during subduction.
• Continental Crust: The thicker, older, and less dense part of Earth's crust that floats on the mantle and forms continents.

📝 Essential Points