- Earth science - Study of rocks - The science which treats: (a) Of the structure and mineral
constitution of the globe; structural geology. (b) Of its history as
regards rocks, minerals, rivers, valleys, mountains, climates, life,
etc.; historical geology. (c) Of the causes and methods by which its
structure, features, changes, and conditions have been produced;
dynamical geology. See Chart of The Geological Series. - A treatise on the science.
- Earth science - Relating to the study of the physical features of the Earth - School subject - Study of the Earth natural features - Study of the Earth's natural features - Terrain - The science which treats of the world and its
inhabitants; a description of the earth, or a portion of the earth,
including its structure, fetures, products, political divisions, and
the people by whom it is inhabited.