How Water Works

Common hydrological terms Descriptions of the common terms that explain the processes that occur in hydrology. Hydrological cycle The movement and storage of water in our natural environment is described as the hydrological cycle. The key storages and processes within the hydrological cycle are: evaporation from the Earth's surface (from oceans, land and vegetation)precipitation (in the form of rainfall, snow, hail, mist and fog)soil moisturegroundwaterstreamflow. Key drivers of the hydrological cycle include radiation from the Sun, the seasons, winds, weather patterns, and precipitation. Precipitation Precipitation is moisture that falls onto the land surface as rain, dew, snow or hail. Evaporation Evaporation is the transfer of water from liquid to vapour. Soil moisture Soil moisture is water held in soil layers above the level at which groundwater (see below) occurs. Groundwater Groundwater is water found in the ground, particularly that which occurs below a free surface in a well. Streamflow Runoff Hydrograph Low flows

WATERFIND | Find Well Water Ebook CoopTic : PagePrincipale Hydraulic engineering Hydraulic Flood Retention Basin (HFRB) Hydraulic engineering is the application of fluid mechanics principles to problems dealing with the collection, storage, control, transport, regulation, measurement, and use of water.[1] Before beginning a hydraulic engineering project, one must figure out how much water is involved. The hydraulic engineer is concerned with the transport of sediment by the river, the interaction of the water with its alluvial boundary, and the occurrence of scour and deposition.[1] "The hydraulic engineer actually develops conceptual designs for the various features which interact with water such as spillways and outlet works for dams, culverts for highways, canals and related structures for irrigation projects, and cooling-water facilities for thermal power plants." [2] Fundamental principles[edit] Fluid mechanics[edit] where, ρ = density of water g = specific gravity y = depth of the body of liquid Rearranging this equation gives you the pressure head p/ρg = y.

The science of water - An introduction to its amazing properties Advertisement by Chris Woodford. Last updated: August 23, 2016. Pour yourself a glass of water and you could be drinking some of the same molecules that passed through the lips of Julius Caesar, Joan of Arc, Martin Luther King, or Adolf Hitler. Photo: Water covers over two thirds of Earth's surface and is an essential ingredient for all the flourishing life our planet enjoys—including this lily of the valley plant. What is water? We can answer that question in many different ways. Chemically speaking, water is a liquid substance made of molecules—a single, large drop of water weighing 0.1g contains about 3 billion trillion (3,000,000,000,000,000,000,000) of them! Most of the water in our world is a combination of "ordinary" hydrogen atoms with "ordinary" oxygen atoms, but there are actually three different istopes (atomic varieties) of hydrogen and each of those can combine with oxygen to give a different kind of water. Water has no end of amazing properties. Water, ice, and steam Patents

Why Parenting Styles Matter When Raising Children Parenting styles are constructs used to describe the different strategies parents tend to utilize when raising children. These styles encompass parents' behaviors and attitudes and the emotional environment in which they raise their children. Developmental psychologists have long been interested in how parents affect child development. Some children raised in dramatically different environments can later grow up to have remarkably similar personalities. Despite these challenges, researchers have posited that there are links between parenting styles and the effects these styles have on children. The Four Parenting Styles In the 1960s, psychologist Diana Baumrind conducted a study on more than 100 preschool-age children. These dimensions include disciplinary strategies, warmth and nurturing, communication styles, and expectations of maturity and control. The four parenting styles that have been identify by Baumrind and other researchers are: Authoritarian Parenting Authoritative Parenting

Science of Hair: Hair Growth Cycle & How Hair Works Why do I need to register or sign in for WebMD to save? We will provide you with a dropdown of all your saved articles when you are registered and signed in. Hair is far more complex than it appears on the surface. We all know that it not only plays a vital role in the appearance of both men and women, but it also helps to transmit sensory information as well as create gender identification. The Origins of Hair By week 22, a developing fetus has all of its hair follicles formed. Most people will notice that the density of scalp hair is reduced as they grow from childhood to adulthood. Continue reading below... Hair Follicles Hair has two distinct structures - first, the follicle itself, which resides in the skin, and second, the shaft, which is what is visible above the scalp. The hair follicle is a tunnel-like segment of the epidermis that extends down into the dermis. Two sheaths, an inner and outer sheath, surround the follicle.

Humans and the water cycle — Science Learning Hub We are becoming increasingly aware of our impacts on nature, but unfortunately many of the things we do have become so ingrained in our way of life that it is hard to change. Different countries use different amounts of water, but we all tend to use them in the same ways, and some of these actions can impact on the water cycle – generating hydroelectricity, irrigation, deforestation and the greenhouse effect, as well as motor vehicle use and animal farming. Hydroelectricity Most of New Zealand’s electricity is generated using hydro dams. Rivers must be dammed, which can affect the function of the river both upstream and downstream – lakes are usually formed from the water accumulating above the dam and a build-up of silt can occur, while the amount of water is reduced further downstream. Seriously mismanaged dams can result in droughts downstream, with smaller streams completely drying up, leaving areas of unwatered land. Irrigation Deforestation Greenhouse effect Nature of science

Bioengineering the Hair Follicle The water cycle — Science Learning Hub The Earth has a finite amount of water. The water that is here today is the same water that will be here in 20 or even 20 million years’ time. So, if all living things use water, how is it that we don’t use up all our water? The answer is that water is constantly recycled through the Earth’s system through a process called the water cycle1. Dynamic and complex: the global water cycle An interactive diagram featuring the global water cycle with explanations from four New Zealand scientists. The water cycle encompasses a number of processes that circulate water through the Earth’s subsystems. The dynamic water cycle In this video, 4 New Zealand scientists – Dave Campbell, Louis Schipper, David Hamilton and Keith Hunter – talk about how only a small percentage of the Earth’s water is freshwater, and of that small percentage, only a fraction is available for human use. Water and the atmosphere Water enters the atmosphere through evaporation10, transpiration, excretion and sublimation: