Tectonic plates
Tectonic Plates
Tectonic plates (/tɛkˈtɒnɪk pleɪts/) are the large, thin, relatively rigid pieces that make up the Earth's lithosphere. The term "tectonic" comes from the Greek word "tektonikos" which means "pertaining to building".
Definition
Tectonic plates are the major components of the Earth's crust, which fit together like a jigsaw puzzle on the Earth's surface. They are constantly moving, albeit very slowly, due to the convective forces in the underlying, semi-fluid asthenosphere. This movement is responsible for various geological phenomena such as earthquakes, volcanic eruptions, and the creation of mountain ranges.
Types of Tectonic Plates
There are two types of tectonic plates: oceanic plates and continental plates. Oceanic plates are denser and thinner, primarily composed of basalt. Continental plates are thicker and less dense, composed mostly of granite.
Plate Tectonics
The study of tectonic plates and their movement is known as plate tectonics. This scientific theory explains the large-scale motions of Earth's lithosphere. The model builds on the concept of continental drift, an idea that was first proposed by Alfred Wegener.
Plate Boundaries
Tectonic plates interact at their boundaries, which are classified into three types: divergent boundaries, convergent boundaries, and transform boundaries. Each type of boundary results in different geological activity.
See Also
- Lithosphere
- Asthenosphere
- Earthquake
- Volcano
- Mountain range
- Oceanic plate
- Continental plate
- Plate tectonics
- Continental drift
- Alfred Wegener
- Divergent boundary
- Convergent boundary
- Transform boundary
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