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Constructive forces are those that build, enhance or enlighten. They are positive forces in nature and human relationships that are responsible for creating change. On the other hand, a destructive force is one that demolishes, breaks apart or lowers. Destructive forces are particularly damaging when it comes to human relationships and interactions.
Constructive Forces--Nature
In nature, constructive forces are those that build and create land. Constructive natural forces include deposition of sediment, crustal deformation and volcanic activity. Deposition of sediment refers to particles that are deposited by rain, snow, ice or wind, forming layered rock over time. Land is built up through volcanic activity as lava flows from a volcano, cooling and turning into rock. Crustal deformation is a constructive force by which the shifting of the earth's tectonic plates cause rocks to fracture (creating cracks and canyons) or fold upward (creating mountains).
Deconstructive Forces--Nature
Deconstructive forces in nature are those that cause the land to break down over time. These forces are not readily noticed, as they work very slowly. Deconstructive natural forces include weathering, which is the slow breakdown of rocks as they expand and contract with changes in climate. Erosion is another deconstructive force by which particles are stripped away due to water, wind, ice and gravity. The ocean is also a deconstructive force, as it erodes the shoreline over time.
Construction and Destruction in Physics--Interference
The study of physics allows us to examine interference as both a constructive and deconstructive forces in waves of sound or light. Interference occurs when two or more waves interact. When waves of light encounter interference, they either respond constructively, becoming brighter and more brilliant, or destructively, becoming duller or dimmed. Similarly, sound waves that encounter interference in the form of other sound waves will respond constructively, making the sound louder and more audible, or deconstructively, becoming quieter or less audible.
Human Relationships--Speech
Speech acts as a constructive and deconstructive force in human relations. Speech is used to build someone up and inflate her confidence, or in a way that is harmful or damaging to a person's self-image. Words are powerful tools that can build someone up or knock them down. Constructive speech is any kind of speech that works toward positive change or maintaining good relations with others. Deconstructive speech is any kind of speech that is negative, hateful or derogatory.
Human Relationships--Anger
Similar to speech, the expression of anger can also work as a constructive or deconstructive force. Constructive anger is any kind of anger expressed with integrity and objectivity. An expression of anger is constructive when the person expressing it also recognizes the boundaries of the person they are expressing their anger to, without violation of those boundaries. On the opposite end of the spectrum, deconstructive anger is anger that is expressed without boundaries. It is defensive, threatening and without integrity. Deconstructive anger can be expressed both consciously and unconsciously.