Clarification Statement - S.HS.ESS.1.1.CS:
Emphasis is on the energy transfer mechanisms that allow energy from nuclear fusion in the Sun’s core to reach Earth. Examples of evidence for the model could include observations of the masses and lifetimes of other stars, as well as the ways that the Su

Assessment Boundary - S.HS.ESS.1.1.AB:
Assessment does not include details of the atomic and sub-atomic processes involved with the sun’s nuclear fusion.

Science and Engineering Practices - 9-12.SEP2.1:
Develop a model based on evidence to illustrate the relationships between systems or between components of a system.

Disciplinary Core Ideas - S.HS.ESS.1.1.DCI:
ESS1.A: The Universe and Its Stars •The star called the sun is changing and will burn out over a lifespan of approximately 10 billion years. PS3.D: Energy in Chemical Processes and Everyday Life •Nuclear Fusion processes in the center of the sun release the energy that ultimately reaches Earth as radiation. (secondary to HS-ESS1-1)

Crosscutting Concepts - CC7.7:
The significance of a phenomenon is dependent on the scale, proportion, and quantity at which it occurs.