Earth's equator

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• Equator — E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into two… …   The Collaborative International Dictionary of English

• Equator of a planet — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …   The Collaborative International Dictionary of English

• Equator of the sun — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …   The Collaborative International Dictionary of English

• Earth Day — is one of two observances, both held annually during spring in the northern hemisphere, and autumn in the southern hemisphere. These are intended to inspire awareness of and appreciation for the Earth s environment. The United Nations celebrates… …   Wikipedia

• Equator — For other uses, see Equator (disambiguation). 0° Equator …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Equator — noun The Earth’s equator …   Wiktionary

• Earth's gravity — Earth s gravity, denoted by g , refers to the gravitational attraction that the Earth exerts on objects on or near its surface. Its strength is usually quoted in terms of the acceleration it gives to falling bodies (acceleration due to gravity),… …   Wikipedia

• equator — [ē kwāt′ər, ikwāt′ər] n. [ME < ML < LL aequator, lit., one who makes equal: see EQUATE] 1. an imaginary circle around the earth, equally distant at all points from both the North and South Poles: it divides the earth s surface into the… …   English World dictionary

• Earth sheltering — is the architectural practice of using earth against building walls for external thermal mass, to reduce heat loss, and to easily maintain a steady indoor air temperature. Earth sheltering is popular in modern times among advocates of passive… …   Wikipedia

• Earth's rotation — is the rotation of the solid Earth around its own axis. The Earth rotates towards the east, which can be observed by orientation with a magnetic compass at sunrise. As viewed from the star Polaris, the Earth turns counter clockwise. Rotation… …   Wikipedia