What nuclear fusion is and how and where it occurs. Using nuclear fusion to produce energy and its pros and cons.

A free CK-12 account is required to view all materials.

Definitions of heat-related concepts. Calculations of heat to show changes in temperature and state of matter. [14:57]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Learn about the formation of elements from this video by NOVA and how these elements were incorporated into Earth when it formed. Closed caption available. [2:27]