Storm resulting in smaller disturbances such as dust devils and whirlwinds. There are many varieties and names for storms: A strict meteorological definition of a terrestrial storm is a wind measuring 10 or higher on the Beaufort scale, meaning a wind speed of 24.5 m/s (89 km/h, 55 mph) or more; however, popular usage is not so restrictive. Storms can last anywhere from 12 to 200 hours, depending on season and geography. In North America, the east and northeast storms are noted for the most frequent repeatability and duration, especially during the cold period. Big terrestrial storms alter the oceanographic conditions
Equate (game) ages 8 and up. The use of fractions stimulates the players interest towards fractions and motives them to want to learn more about fractions. In order to get higher scores, players are constantly taking advantage of premium board positions. Equate uses large numbers. Single digits placed adjacent to one another creates even larger numbers. Equate is also strategically challenging for advanced players who are already good at math. The game adapts to many different levels of play. Advanced Tile Sets take the game of Equate to a higher mathematical level. This particular sets includes 197 tiles with positive and negative