Earth pigment is the name of a class of pigments, which are usually mined directly from the earth, dried, generally Calcined and ground. Typical examples are red and yellow oxides of iron, yellow-ochre, raw and burnt sienna, and raw and burnt umber. Read more..
Earth system science (Gaia Theory) is a term used to describe science that studies the whole Earth as a system of many interacting parts and focuses on the changes within and between these. Read more..
Earthquake is a sudden release of energy from slip on a fault, an explosion, or other event that causes the ground to vibrate, shake or and crack, associated with the passage of waves of energy released at its source. An earthquake originates in one place and then spreads out in all directions along the fault plane. Read more..