The general theory of water flow describes the behavior of water at melting at the base of a glacier or melting ice sheet. It observes the flow of water in the presence of Rothlisberger channels, channels carved upward f... More » Science Earth Science

The pressure flow theory states that water with food molecules inside of it moves through the phloem of a plant through pressure. This theory is meant to explain how food moves around inside plants. More »

To calculate the water flow rate, square the pipe's diameter, and then multiply that number by pi, .25 and the velocity of the water flow. For example, a pipe with a diameter of 3 inches, or .25 feet, and a water velocit... More »

Encyclopædia Britannica states that many pieces of evidence support the sea floor spreading theory of plate tectonics, including increased heat flow along mid-ocean ridges, geomagnetic anomalies near ocean ridges, thickn... More »

According to Curiosity from Discovery, a delta forms when particles of mud, fine sand and gravel amass at the base of a river where it enters a larger body of water like a gulf or large lake. Deltas build and extend slow... More » Science Earth Science

Large rocks deposited by melting glaciers are called "glacial erratics," after the Latin word "errare" or "to wander." Erratics can be carried hundreds or thousands of miles by a glacier before they are deposited. More » Science Earth Science

The largest glacier in the world is Lambert Glacier, as of 2014. It has a maximum width of about 60 miles and spans a total length of approximately 270 miles. This glacier is over 8,000 feet thick at its deepest point. More »