The Physics of Earth and Planetary Interiors

The physics of Earth and planetary interiors involves understanding how heat, pressure, and materials change from the surface to the core. The Earth's interior is made up of layers: a solid crust, a viscous mantle, a liquid outer core, and a solid inner core. Heat from radioactive decay and leftover formation energy causes convection currents in the mantle, driving plate tectonics. Pressure increases with depth, affecting mineral properties. Understanding these processes helps scientists learn about planetary formation, magnetic fields, and seismic activity, revealing the dynamic nature of our planet and others in the solar system.