Energy Source Research Choose one of the sources of energy you read about. Conduct a short research project. Identify the pros and cons of your energy source. What are the effects on the land, environment, and communities?
Positives
Energy/Light Source
Negatives
• not available on cloudy days or at night
sunlight
• available all day
moonlight
• available at night
• moon phases
• plants/animals have to be processed to make liquid • fast burn • odor • unsafe
• portable light • provided light
plant or animal oil lamp
• portable • made in quantity • provided light
• fast burn • unsafe
candles
• portable • made in quantity • design provides greater light • safe • much brighter than oil lanterns • safe • bulbs last longer than candles or lamps • creates a yellow light like sunshine
• oil-processing • odor • unsafe • dirty
oil lanterns
• has to be connected to a generator through wires
• cost of installation and use • replacements necessary • creates great heat • cost of creating electricity • light pollution
electric lights
• light can be used as pulses to create signals • cool to the touch
• expensive to create and install
fiber optics
• brightness level is high. • longer life span of bulb. • less energy to illuminate.
• color display is not natural • emits a blue-white light • light pollution
light-emitting diode (LED)
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