CK-12 Foundation
Ck 12: Earth Science: Obtaining Energy Resources
[Free Registration/Login may be required to access all resource tools.] Many factors go into determining how much energy a resource will provide.
CK-12 Foundation
Ck 12: Earth Science: Obtaining Energy Resources Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the important role of net energy in obtaining energy resources. Includes a few questions to check for understanding.