Ohio Science Academic Content Standards (2002)
Describe that energy takes many forms, some forms represent kinetic energy and some forms represent potential energy; and during energy transformations the total amount of energy remains constant.
Explain how energy may change form or be redistributed but the total quantity of energy is conserved.
Grade Level Indicators (Grade 7)
Explain how energy can change forms but the total amount of energy remains constant.
Grade Level Indicators (Grade 9)
Trace the transformations of energy within a system (e.g., chemical to electrical to mechanical) and recognize that energy is conserved. Show that these transformations involve the release of some thermal energy.
National Science Education Standards
Transfer of energy (Grades 5 - 8)
Conservation of energy and increase in disorder (Grades 9 - 12)