Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

7Categories 223518Terms

Add a new term

Contributors in Earth science

Become a Contributors

Earth science > Mapping science

vertical curve

Earth science; Mapping science

(1) A parabolic curve used as a transition curve between different grades or slopes. (2) A Bz curve. (3) A transition curve in the vertical direction. It is usually ...

construction theodolite

Earth science; Mapping science

A theodolite sufficiently accurate and sturdy that it can be used in construction projects. The accuracy of a construction theodolite is usually sufficient that the instrument ...

angular coordinate

Earth science; Mapping science

An angle used as a coordinate, i.e., an angle which, alone or together with other coordinates, specifies the location of or direction to a point. Astronomers use two angular ...

standard datum plane

Earth science; Mapping science

An imaginary surface containing all points at which the barometric pressure is 29. 92 inches of mercury at a temperature of 15 o C.

constant of nutation

Earth science; Mapping science

The amplitude of that term, in the equation for nutation in obliquity, which has the period of the longitude of the Moon's ascending node. Alternatively, the coefficient of cosΩ ...