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Earth science
Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.
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ground shaking
Earth science; Seismology
General term referring to the qualitative or quantitative aspects of movement of the Earth's surface from earthquakes or explosions. Ground motion is produced by waves that are ...
gravity
Earth science; Seismology
The attraction between two masses, such as the Earth and an object on its surface. Commonly referred to as the acceleration of gravity. Changes in the gravity field can be used ...
sea-floor spreading
Earth science; Seismology
The process by which adjacent plates along midoceanic ridges move apart to make room for new sea-floor crust. This process may continue at 0. 5 to 10 centimeters per year through ...
epicentre
Earth science; Seismology
The point on the earth's surface directly above the focus (hypocentre) of an earthquake.
epicenter
Earth science; Seismology
The point on the Earth's surface directly above the (subterranean) point of origin (hypocenter) of an earthquake; only two measurements, latitude and longitude, are needed to ...
Sub-categories
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- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)