Natural environment

Natural environment

Related to any physical feature of the earth's natural environment.

17Categories 71833Terms

Add a new term

Contributors in Natural environment

Become a Contributors

Natural environment > Volcano

submarine volcano

Natural environment; Volcano

Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. They are estimated to account for 75% of annual magma output. The vast ...

pyroclastic flow

Natural environment; Volcano

A pyroclastic flow (also known scientifically as a pyroclastic density current) is a fast-moving current of hot gas and rock (collectively known as tephra), which reaches speeds ...

active volcano

Natural environment; Volcano

There is no consensus among volcanologists on how to define an "active" volcano. The lifespan of a volcano can vary from months to several million years, making such a ...

extinct volcano

Natural environment; Volcano

Extinct volcanoes are those that scientists consider unlikely to erupt again, because the volcano no longer has a magma supply. Examples of extinct volcanoes are many volcanoes on ...

dormant volcano

Natural environment; Volcano

It is difficult to distinguish an extinct volcano from a dormant (inactive) one. Volcanoes are often considered to be extinct if there are no written records of its activity. ...

Mount Etna

Natural environment; Volcano

Mount Etna is an active stratovolcano on the east coast of Sicily, Italy, close to Messina and Catania. It lies above the convergent plate margin between the African Plate and the ...

Mount Vesuvius

Natural environment; Volcano

Mount Vesuvius is a stratovolcano in the Gulf of Naples, Italy, about 9 km (5.6 mi) east of Naples and a short distance from the shore. It is one of several volcanoes which form ...