What happens to water when it gains heat? What happens to water when it loses heat? How can the formation of ice break big rocks into small rocks? Why do lakes turn over in the spring and fall? Why does ice float? These are some of the questions that will be investigated using hands on activities. In addition to process skills being covered, TEKS 4.5A, 4.5B, 4.5C, and 4.8B will be investigated. This session is designed for grades 4 and 5.