ch 5 Flashcards
renewable resources
materials that are replaced or replenished by natural processes
types of renewable resources
-Perpetual resources: come from sources that are virtually inexhaustible (sun)
-Potentially renewable resources: renewable if left to nature but can be destroyed if people use them carelessly (soil)
nonrenewable resources
exists in finite amounts or are generated in nature so slowly that for all practical purpose, the supply is finite
Nuclear Fission
involves controlled “splitting” of an atomic nucleus of uranium-235
Nuclear Fusion
requires heating atoms to extremely high temperatures until their nuclei collide and fuse
what increased interest in renewable resources has resulted from (DDDG)
dangers of nuclear energy
depleting fossil fuels
desire for less foreign energy dependency
global climate change
hydropower can be generated as a function of what two variables
the elevation drop and the flow rate