Crater - Wikipedia
网页A crater is a landform consisting of a hole or depression on a planetary surface, usually caused either by an object hitting the surface, or by geological activity on the planet. A crater has classically been described as: "a bowl-shaped pit that is formed by a volcano, an explosion, or a meteorite impact".
Crater Definition & Meaning - Merriam-Webster
网页2011年9月3日 · The meaning of CRATER is the bowl-shaped depression around the orifice of a volcano. How to use crater in a sentence.
Crater Lake National Park (U.S. National Park Service)
网页2024年9月17日 · Scientists marvel at its purity—fed by rain and snow, it’s the deepest lake in the USA and one of the most pristine on Earth. Artists, photographers, and sightseers gaze in wonder at its blue water and stunning setting atop the Cascade Mountain Range.
Crater - National Geographic Society
网页2024年4月17日 · A crater is a bowl-shaped depression, or hollowed-out area, produced by the impact of a meteorite, volcanic activity, or an explosion. Impact Craters Craters produced by the collision of a meteorite with Earth (or another planet or moon ) …
Volcanic crater - Wikipedia
网页A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. [1] It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions , molten magma and volcanic gases rise from an underground magma chamber , through a conduit, until they reach the crater's vent, from where the ...
Caldera or crater…what’s the difference? | U.S. Geological Survey
网页2024年1月8日 · The main point is that a caldera is bigger and a crater is smaller. Craters often form by small evacuations of magma from shallow levels, like the numerous pit craters that dot the surface of Kīlauea, in Hawaiʻi, whereas a caldera results by the partial emptying of a volcano’s main magma chamber.
What Is an Impact Crater? - NASA Space Place
网页2024年9月27日 · An impact crater is formed when an object like an asteroid or meteorite crashes into the surface of a larger solid object like a planet or a moon. To form a true impact crater, this object needs to be traveling extremely fast—many thousands of …
What is a volcanic crater? Made SIMPLE - The geography teacher
网页What is a volcanic crater? A volcanic crater is a depression or hollow area that forms at the summit or on the flanks of a volcano due to volcanic activity. How are volcanic craters formed? Volcanic craters are formed through explosive eruptions or collapse events.
Crater | volcanic, impact, formation | Britannica
网页Crater, circular depression in the surface of a planetary body. Most craters are the result of impacts of meteorites or of volcanic explosions. Meteorite craters are more common on the Moon and Mars and on other planets and natural satellites than on Earth, because most meteorites either burn up in.
Meteorite crater | Impact Structure, Geology & Formation
网页meteorite crater, depression that results from the impact of a natural object from interplanetary space with Earth or with other comparatively large solid bodies such as the Moon, other planets and their satellites, or larger asteroids and comets.