Give them a couple of minutes to read over the map. Ask them to identify three types of salt production sites in North AmericaMake copies or read, as a class, the information from Facts About Salt brochure pages 3 - 4 which explains the different methods of producing salt. Look at the map and notice how salt production sites are situated geographically across North America. Try to identify spatial patterns of distribution. Salt is an inexpensive, bulk commodity.
Solar salt is produced by the evaporation of sea water or natural brines.
Ask what type of climate and other physical conditions are necessary for solar salt production. Some solar salt plants are located near the ocean. Ask students what market advantage these solar salt plants may have. 5. Place the brine in a shallow pan or petri dish. Place the container on a newspaper and on a sunny windowsill or radiator.