WA water fight is a type of mock combat using various water-dispensing devices to soak opponents. Everything from buckets to balloons to water guns and even cupped hands cradling water can be applied in a water fight. There are many different levels of game play used by those engaging in water fights, from quick, casual fights to long, objective-oriented-style water warfare campaigns, and tournament-style games. In most but not all cases, the common objective is to soak one's opponents while trying to remain dry.
WAn air mattress is an inflatable mattress or sleeping pad.
WA baking powder submarine is a plastic toy submarine that dives and surfaces with the addition of baking powder. Baking powder submarines are sometimes misidentified as "baking soda submarines"; however, baking soda alone dissolves but does not react when placed in water.
WA Cartesian diver or Cartesian devil is a classic science experiment which demonstrates the principle of buoyancy and the ideal gas law. The first written description of this device is provided by Raffaello Magiotti, in his book Renitenza certissima dell'acqua alla compressione published in 1648. It is named after René Descartes as the toy it is said to have been invented by him.
WDrinking birds, also known as insatiable birdies, dunking birds, drinky birds, water birds or dipping birds, are toy heat engines that mimic the motions of a bird drinking from a water source. They are sometimes incorrectly considered examples of a perpetual motion device.
WExpandable water toys or grow-in-water toys, or grow monsters are novelty items made from a superabsorbent polymer. They are toys that expand after putting them into water for several days. Also, it shrinks with salty water though most shrink simply from air after being removed from water. They are made from polymers that can absorb and retain extremely large amounts of a liquid relative to their own mass.
WA pool noodle is a cylindrical piece of buoyant polyethylene foam, sometimes hollow. Noodles are used by people of all ages while swimming.
WA water rocket is a type of model rocket using water as its reaction mass. The water is forced out by a pressurized gas, typically compressed air. Like all rocket engines, it operates on the principle of Newton's third law of motion. Water rocket hobbyists typically use one or more plastic soft drink bottle as the rocket's pressure vessel. A variety of designs are possible including multi-stage rockets. Water rockets are also custom-built from composite materials to achieve world record altitudes.
WA rubber duck or rubber ducky is a toy shaped like a stylized duck, generally yellow with a flat base. It may be made of rubber or rubber-like material such as vinyl plastic. Rubber ducks were invented in the late 1800s when it became possible to more easily shape rubber, and are believed to improve developmental skills in children during water play. The yellow rubber duck has achieved an iconic status in Western pop culture and is often symbolically linked to bathing. Various novelty variations of the toy are produced, and many organisations use yellow rubber ducks in rubber duck races for fundraising worldwide.
WHydrophobic sand is a toy made from sand coated with an hydrophobic compound. The presence of the hydrophobic compound causes the grains of sand to adhere to one another and form cylinders when exposed to water, and form a pocket of air around the sand. The pocket of air makes magic sand unable to get wet. A variation of this, kinetic sand, has several of the same properties, but acts like wet sand that will not dry out. Hydrophobic sand, whether the wet or dry type, will not mix with water.
WA swim ring is a toroid-shaped inflatable water toy. The swim ring was derived from the inner tube, the inner, enclosed, inflatable part of older vehicle tires. The inner tube, when inflated, was used as a water toy, and as a floating object to lounge on.
WWaboba is an international outdoor toy and sporting goods brand headquartered in Stockholm, Sweden with offices in Atlanta, Georgia and Guangzhou, China. Waboba is most known for its invention of balls that bounce on water, the high bouncing Moon ball, and the Wingman silicone flying disc. The company specializes in beach and backyard toys and games. The slogan used in advertising is Keep Life Fun. The name Waboba is a registered trademark and many of its products are internationally patented.
WA water ball or water walking ball is a large inflatable sphere that allows a person inside it to walk across the surface of a body of water. The giant ball is usually two metres in diameter and has a zippered entrance to allow for easy entry and exit. The water ball is similar to the zorb but it has only one layer and is designed for water travel rather than down-hill rolling. In the United Kingdom, the balls have been used at swimming pools, marinas and lakes in an effort to keep children fit.
WA water balloon or water bomb is a latex rubber balloon filled with water. Water balloons are used in a summer pastime of cooling off through water balloon wars. Water balloons are also popular for celebrations, including celebrating Holi and Carnival in India, Nepal, and several other countries.
WWaterballs are water toys that are played on the water surface with players interacting with the water toy and the water in any number of play patterns. Generally players throw waterballs at varying speeds across the water and air at varying angles to get the desired skip pattern. Play is generally between players and play patterns can involve a variety of apparatus and equipment, such as special pools with goals and watercourts.
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