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

equality

Earth science; Mapping science

The situation that arises when a single point on a route alinement has two values because of joining preliminary and final stationing. Thus, station 123+45. 6 ahead equals ...

elevation meter

Earth science; Mapping science

A mechanical or electromechanical device on wheels which measures slope and distance, and automatically and continuously integrates their product into difference of elevation. ...

gravitational potential energy

Earth science; Mapping science

(1) The gravitational potential energy at a point P is the amount of work done by (or from) a conservative field in carrying a unit mass to P from infinity. (2) The difference ...

error of observation

Earth science; Mapping science

The difference between the measured value of a quantity and a value adopted as representing the ideal or true value of that quantity. Errors of observation are composed of either ...

eye-and-ear method

Earth science; Mapping science

A method of measuring the time at which a stellar image crosses a particular line in a reticle, by counting off the seconds or half seconds to oneself while observing the passage. ...