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These lists of words are still assigned for memorization in elementary schools in America and elsewhere. Although most of the 220 Dolch words are phonetic, children are sometimes told that they can't be "sounded out" using common sound-to-letter phonics patterns and have to be learned by sight; hence the alternative term, "sight word".
Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1] The word scuba is an acronym for "Self-Contained Underwater Breathing Apparatus" and was coined by Christian J. Lambertsen in a patent ...
Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to the order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...
English: Dolch sight words from Pre-primary through 3rd Grade levels along with their phonetic Hindi counterparts. This is very useful for teaching correct pronounciation of essential english words to anyone familiar with the Hindi / devnagri script. Parents who don't know english can use this to teach the english words to their kids.
Bag which seals in a watertight manner. Used for keeping clothes and other equipment dry in a wet environment. dry bell. See: closed bell. dry filling. See: Diving cylinder#Temperature change during filling. Filling scuba cylinders without the use of a water bath for cooling. [43] dry suit. Main article: Dry suit
Aeris brand covered a wide range of recreational scuba equipment, including regulators, dive computers, buoyancy compensators, harnesses, masks, fins, and snorkels. [2] Aerotec Industries Inc. Norseman scuba regulators. [3] Aer-Sub, also known as Spiro-Sub – Branding used by Cressi-Sub for scuba equipment Trademarks used by Cressi-sub. [4]
A person on the beach who records when divers enter and exit the water. Typically used during recreational scuba training to keep track of the students, watch the gear, and provide assistance when required. bell 1. See: diving bell 2. Short tug on a lifeline, used in pairs, for signalling purposes. (see "pull" for comparison) bell bounce dive
Scuba equipment: Primary cylinder(s), carried back-mounted or side mounted and open circuit regulator(s), or rebreather sets. Alternative air source such as bailout bottle or pony bottle, and decompression cylinders and their associated regulators. Secondary demand valve (Octopus). Sometimes a full-face diving mask is used.