acid magma
51Geyser — For other uses, see Geyser (disambiguation). Strokkur geyser, Iceland …
52Lake Nyos — For School level education board in India, see NIOS. nyos redirects here. For information about youth orchestra, see National Youth Orchestra of Scotland. Lake Nyos Location Northwest Province …
53Ocean planet — Illustration of a hypothetical ocean planet with a terrestrial atmosphere and two satellites An ocean planet (also termed a waterworld) is a hypothetical type of planet whose surface is completely covered with an ocean of water. Planetary objects …
54Progressive Rock — Entstehungsphase: Ende der 1960er Jahre Herkunftsort: England Stilistische Vorläufer Psychedelic Rock, Klassische Musik, Elektronische Musik, Jazz …
55rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
56Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …
57Geology of Venus — Radar image of the surface of Venus, centered at 180 degrees east longitude Venus is a planet with striking surface characteristics. Most of what is known about its surface stems from radar observations, mainly images sent by the Magellan probe… …
58silica mineral — Any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, melanophlogite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically. * * * Introduction… …
59Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …
60MAA — may refer to: * Maa languages, a group of closely related languages (or dialects) spoken in Tanzania and KenyaMAA, as an abbreviation or acronym, may refer to:;Associations and organizations: * Maritime Arbitration Association of the United… …
