Plate Tectonics

Birth of the Earth

The process by which Earth formed from dust and small protoplanets colliding, resulting in a hot inner core and a solid crust.

Convective Flow

The movement of heat and material within the Earth, driven by the temperature difference between the hot inner core and the cooler crust.

Crust

The outer layer of the Earth, composed of less dense rock that floats on the mantle and is solid at the surface.

Mantle

The layer beneath the crust, made of rock and metals like iron and magnesium, characterized by a rigid lower part and a plastic upper part where convective flow occurs.

Core

The innermost layer of the Earth, composed mainly of nickel and iron, responsible for generating heat and driving plate tectonics.

Plate Tectonics

The theory explaining the movement of the Earth's lithosphere due to convective flow in the mantle, leading to the formation of tectonic plates.

Continental Crust

The thicker and less dense part of the Earth's crust that forms the continents.

Oceanic Crust

The thinner and denser part of the Earth's crust that forms the ocean floors.

Transform Boundary

A tectonic plate boundary where two plates slide past each other, causing friction and potentially leading to earthquakes.

Divergent Boundary

A tectonic plate boundary where two plates move away from each other, resulting in seafloor spreading and the formation of new lithosphere.

Convergent Boundary

A tectonic plate boundary where two plates move towards each other, leading to the destruction of crust and the formation of mountains, volcanoes, and trenches.

Subduction Zones

Areas where one tectonic plate is forced beneath another, leading to melting and the potential formation of volcanoes or islands.

Ring of Fire

A region around the Pacific Ocean characterized by a high level of tectonic activity, including earthquakes and volcanoes.

Earthquake Formation

The release of energy stored due to friction between tectonic plates, resulting in seismic activity.

Tsunamis

Large ocean waves caused by underwater earthquakes, particularly destructive at convergent boundaries due to vertical displacement of water.