Crater: Wikis

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Encyclopedia

From Wikipedia, the free encyclopedia

Crater may refer to:

In landforms:

  • Impact crater, caused by two celestial bodies impacting each other, such as a meteorite hitting a planet
  • Volcanic crater or caldera, formed by volcanic activity
  • Subsidence crater, from an underground (usually nuclear) explosion
  • A maar crater, a relief crater caused by a phreatic eruption or explosion
  • pit crater, a crater that forms through sinking of the surface and not as a vent for lava
  • Crater lake
  • Explosion crater, a hole formed in the ground produced by an explosion near or below the surface

Other:

See also

  • Krater, a Greek vessel used to mix wine and water (the original meaning)

1911 encyclopedia

Up to date as of January 14, 2010

From LoveToKnow 1911

CRATER, the cavity at the mouth of a volcanic duct, usually funnel-shaped or presenting the form of a bowl, whence the name, from the Gr. Kpan'ip, a bowl. A volcanic hill may have a single crater at, or near, its summit, or it may have several minor craters on its flanks: the latter are sometimes called "adventitious craters" or "craterlets." Much of the loose ejected material, falling in the neighbourhood of the vent, rolls down the inner wall of the crater, and thus produces a stratification with an inward dip. The crater in an active volcano is kept open by intermittent explosions, but in a volcano which has become dormant or extinct the vent may become plugged, and the bowlshaped cavity may subsequently be filled with water, forming a crater-lake, or as it is called in the Eifel a Maar. In some basaltic cones, like those of the Sandwich Islands, the crater may be a broad shallow pit, having almost perpendicular walls, with horizontal stratification. Such hollows are consequently called pit-craters. The name caldera (Sp. for cauldron) was suggested for such pits by Capt. C. E. Dutton, who regarded them as having been formed by subsidence of the walls. The term caldera is often applied to bowl-shaped craters in Spanishspeaking countries. (See VOLCANO.)


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Wiktionary

Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also crater

Contents

English

Etymology

Latin crater, a "basin" or "cup" < Ancient Greek κρατήρ (kratēr), mixingbowl, wassail-bowl) < κράμα (krama), mixture) < κεράννυμι (kerannumi), to mix, to mingle).

Proper noun

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Crater

  1. (astronomy): A dim spring constellation of the northern sky, said to resemble a cup. It lies between the constellations Virgo and Hydra.

Derived terms

Translations

Anagrams


Simple English

This article is about a large hole in the ground. For other things that "Crater" means, go to Crater (disambiguation)

A crater is a large hole in the ground. They are usually shaped like a circle or an oval. They are usually made by something like a meteor hitting the surface of a planet. Underground activity such as volcanoes or explosions can also cause them but it not mostly like to.


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