1. Basics- as they apply to APES
Energy Principles
Basics- as they apply to APES

2. Energy
capacity to do work and transfer heat
Kinetic Energy -energy in action
Potential energy - stored energy that is potentially available
electromagnetic radiation, heat (thermal), temperature (caused by kinetic- motion of molecules)

3. Electromagnetic radiation
different wave lengths shorter – high energy, disrupts cells with long term exposure

4. Energy sources
97% solar
without the sun, earth’s temperature would be: C
1% - non commercial(wood, dung, crops) + commercial ( burning mineral resources)

5. Energy quality
Measure of how useful an energy source is in terms of concentration and ability to perform useful work

6. Solar energy reaches earth
Lights and warms the planet; evaporates water and cycles through the biosphere – controls and drives weather , provides energy for photosynthesis – (0.023% used );

7. Law of Conservation of Matter
elements and compounds changed from one form to another, can never be destroyed
no “away” in “throw away”

8. 1st Law of Energy or 1st Law of Thermodynamics
in all physical and chemical changes energy is neither created or destroyed
energy input always equal to energy output

9. 2nd Law of Energy or 2nd Law of Thermodynamics
when energy is changed from one form to another some of the useful energy is always degraded to lower quality, more dispersed, less useful energy(heat)