We’re used to seeing stunning images of cascading waterfalls in all their fluid glory, but have you ever wondered how they would look if Jack Frost was let loose on them? Well, you need wait no longer as we have compiled a range of fantastic frozen waterfalls.
1. This enchanting image of an ice waterfall perfectly captures the force and flow of the water underneath the ice, making it hard to comprehend how it ever manages to freeze. Read more
Even if you’ve never heard of capillary action, it is still important in your life. Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension.
Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances). Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the walls is stronger than the cohesive forces between the liquid molecules. The height to which capillary action will take water in a uniform circular tube (picture to left) is limited by surface tension and, of course, gravity. Read more
From ancient times, in Western culture and worldwide, water has been an enduring theme in the arts. Water themes (including snow and ice) flow
Sea monsters in literature often are exaggerations of naturally occurring creatures. An enormous and “hostile” giant squid became a menacing foe in Jules Verne’s 1873 classic Twenty Thousand Leagues Under the Sea. Read more
Where is the Selenga River?
The Selenga River (often called Selenge River) is a major river in Asia that forms at the confluence of the Ider and Delger Rivers in northern Mongolia. It flows northeastwards through Mongolia and Russia and forms a large delta on the southeast shoreline of Lake Baikal, the world’s largest and deepest freshwater lake. Tributaries include: Eg River, Dzhida River, Orkhon River, Khanui River, Chikoy River, Khilok River, and Uda River. The Selenga is the primary contributor of water to Lake Baikal and its tributaries drain approximately 80 percent of the lake’s watershed.
The average discharge of the Selenga River into Lake Baikal varies from 100 m3/s in winter to 1,700 m3/s during spring snow melt. Read more
A drought is a period of drier-than-normal conditions that results in water-related problems. When no rain or only a very small amount of rain falls, soils can dry out and plants can die.
When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought. Read more