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Fujita scale
The Fujita scale (F-Scale), or Fujita-Pearson scale, rates a tornado's intensity by the damage it inflicts on human-built structures and sometimes on ... > more -
Hayward Fault Zone
The Hayward Fault Zone is located in northern California in the San Francisco Bay Area. It is parallel to and east of its more famous (and much longer) sister fault, the San Andreas ... > more -
Urbanization
Urbanization or urbanisation is the increase over time in the population of cities in relation to the region's rural population. Urbanization has intense effects on the ecology of a region and on its ... > more -
Stratovolcano
A stratovolcano is a tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash. These volcanoes are characterized by a steep profile and periodic, explosive eruptions. ... > more -
Fire fighting
Firefighting is the act of extinguishing destructive fires. A firefighter fights these fires and prevents destruction of life, property and the environment. Firefighting is a highly technical ... > more -
Mount Etna
Mount Etna is an active volcano on the east coast of Sicily, close to Messina and Catania. It is the largest active volcano in Europe, currently standing about 3,350 m (10,991 ft) high, though it ... > more -
Purple loosestrife
Purple loosestrife is a semi-aquatic herbaceous plant belonging to the loosestrife family, Lythraceae, native to the wetlands of Eurasia. It is a herbaceous perennial plant, growing 1-2 m tall, ... > more -
Civil engineering
In modern usage, civil engineering is a broad field of engineering that deals with the planning, construction, and maintenance of fixed structures, or public works, as they are related to earth, ... > more
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