Earth equator

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• 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 — 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 — [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

• Earth tide — is the sub meter motion of the Earth of about 12 hours or longer caused by Moon and Sun gravitation, also called body tide which is the largest contribution globally. The largest body tide contribution is from the semidiurnal constituents, but… …   Wikipedia

• equator — ► NOUN ▪ a notional line around the earth equidistant from the poles, dividing the earth into northern and southern hemispheres. ORIGIN Latin aequator, in the phrase circulus aequator diei et noctis circle equalizing day and night …   English terms dictionary

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