Walk as fast as you can in a circle around a section of the pool that's about 3 feet deep (the more people, the better the effect). Do about 20 laps, then change direction for 10 laps. The resulting rush of water against your body will feel much like the jets in a whirlpool.
Elements and Compounds. All matter in the natural world is composed of one or more of the 92 fundamental substances called elements. An element is a pure substance that is distinguished from all other matter by the fact that it cannot be created or broken down by ordinary chemical means.
A block of material used in construction work. Classified under: Nouns denoting man-made objects. Hypernyms (building block is a kind of...): building material (material used for constructing buildings) Hyponyms (each of the following is a kind of building block): ashlar (a rectangular block of hewn stone used for building purposes) breeze block; cinder block; clinker block (a light concrete building block made with cinder aggregate) headstone; key; keystone (the central building block at the top of an arch or vault)