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Science Vocabulary
Term | Definition |
---|---|
Continental Drift | The movement of Earth's continents relative to each other. |
Plate Tectonics Theory | The theory that Earth's crust is made up of individual plates that gradually move in relation to each other. |
Tectonic Plate | One of several huge pieces of Earth's crust. |
Lithosphere | The part of Earth which is composed mostly of rocks; the crust and mantle core. |
Fault | A crack in a body of rock that the rock can move on. |
Seismic Waves | Waves of energy that travel through Earth's interior due to an earthquake, other tectonic forces, or an explosion. |
Seismograph | An instrument used to detect and measure earthquakes and other ground vibrations. |
Seafloor Spreading | Process by which new oceanic lithosphere forms at mid-ocean ridges as tectonic plates pull away from each other. |