Colorado Science Standards:
"There are different forms of energy, and those forms of energy can be changed from one form to another – but total energy is conserved"

Missouri Science Standards:

Victorian and Australian Science Standards:
"Students use everyday examples of machines, tools and appliances to show how the thermodynamic model describes energy and change, and force and motion. Students study forms of energy, energy transfer and storage. They also study the structure of the earth and geological history, plate tectonics and geological phenomena."