By Jason Cooper
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Extra info for Antlers and Horns (Let's Look at Animals Discovery Library)
Water table Ground water rises to a level called the water table. Below this level, any spaces between the rock and soil particles are full of water, so the ground is saturated. The water table usually rises and falls with the seasons, getting higher during the wet season and lower during the dry season. The water surface of rivers and lakes usually lies level with the water table. Unsaturated zone Water table Saturated zone Below the water table water fills the spaces between particles. Surface water Cave shapes Most caves are carved from limestone rock by streams that flow underground.
It uses pistons and cylinders. 1796 1803 1805 Frenchman Joseph-Louis Gay-Lussac shows that water is made of two parts hydrogen to one part oxygen. A lecturer in meteorology, British chemist Luke Howard invents names for clouds, such as cirrus and cumulus. Frenchman Joseph Montgolfier invents a hydraulic ram – a system for raising water using the power of a waterfall. 1778 1783 1800 Englishmen William Nicholson and Anthony Carlisle use electricity to split water into hydrogen and oxygen gases. Frenchmen Lavoisier and Laplace show that water is made from the elements hydrogen and oxygen.
Sewage plant treats waste water from homes and businesses to make it safe to release into a river. Washing line evaporation is greatest on hot, dry, windy days. This is when water from damp clothes evaporates the fastest. A hot shower uses about 15 litres (4 gal) of water per minute. The used water goes down the drain and into a wastewater pipe. A car wash uses at least 120 litres (32 gal) of water per car. The used water goes down the drain and soon reaches a sewer. Underground reservoir stores water before it is distributed to homes and businesses.