Which term is described as a source of energy that is replaced in a relatively short time period?

• A. Non-renewable Resource
• B. Primary/Dry Cell
• C. Renewable Resource
• D. Phantom Load

Answer: (C)

Renewable resources are energy sources that get replenished quickly by natural processes, so their supply remains available for the foreseeable future. Sunlight, wind, moving water, biomass, and geothermal heat are classic examples. Because they renew on human timescales, they contrast with non-renewable resources like fossil fuels and uranium, which form over very long periods and are depleted faster than they can be replaced. A primary or dry cell is a battery that stores chemical energy for later use, not a continuously replenished energy source. A phantom load describes energy wasted by devices left on or in standby, not a source of energy. So the term that fits a source of energy replaced in a short time period is renewable resource.