PS2+(5-6)+-+6


 * Students demonstrate an understanding of energy by…**

6a __differentiating among the propertie__s of various forms of energy.

6b __explaining how energy may be stored in various ways__ (e.g. batteries, springs, height in terms of potential energy).

6c __describing sound as the transfer of energy through various materials (e.g. solids, liquids, gases).__