Students in grade 7 understand that energy cannot be created or destroyed, but only changed from one form into another or transferred from place to place. Students understand energy in relationship to solids, liquids, gases and heat transfer. Students describe how earth processes have shaped the topography of the earth and have made it possible to measure geological time. Students understand the natural processes of the earth and understand how the earth is constantly changing. Students understand the cellular structure of living organisms, from single-celled to multicellular. The science and engineering processes as well as engineering opportunities are integrated with content throughout the course. Along with the current academic standards for this subject, the Science/Technical Studies Content Area Literacy Standards are incorporated with the expectation of a continuum of reading and writing skills development.