Texas Education Agency
Texas Gateway: Ap Physics: Gravitational Potential Energy
By the end of this section, you will be able to explain gravitational potential energy in terms of work done against gravity, show that the gravitational potential energy of an object of mass m at height h on Earth is given by PEg = mgh,...
CK-12 Foundation
Ck 12: Earth Science: Natural Resource Conservation Study Guide
A study guide covering natural resource conservation.
CK-12 Foundation
Ck 12: Earth Science: Star Power Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the energy in stars. Includes a few questions to check for understanding.
Other
The Sustainable Scale Project: Ecological Footprint
The Ecological Footprint is rooted in the fact that all renewable resources come from the earth. It accounts for the flows of energy and matter to and from any defined economy and converts these into the corresponding land/water area...
Other
Few: Human Impact on the Environment & Environmental Impact on Humans
Human beings have an enormous impact on the natural environment, and ultimately on each other. The way we chose to house, clothe, shelter, and meet the needs for vital resources such as food, energy, and water, not only affect the...