Anything that isn't a man-made event is a natural phenomenon. Hurricanes, earthquakes, the aurora borealis, volcanic eruptions, floods, avalanches, meteor collisions, lightning strikes and the tidal forces caused by the moon are all natural phenomena. Biological processes and astrophysical occurrences fall under nature's purview.Know More
Earthquakes happen because the Earth is composed of tectonic plates connected by fault lines. When the stresses between these plates grows too large and one of them slips, shockwaves are sent throughout the land and any nearby bodies of water.
Hurricanes form over the ocean when a low pressure area is powered by the heat of condensation. This heat results from water vapor rising up to form clouds, which liberates energy. If there isn't an outlet for the build-up of energy via wind shear, the winds build up. A tropical storm forms when winds are 74 miles per hour or higher.
The aurora borealis results when energetic electrons from the solar wind interact with molecules and atoms in our atmosphere. Earth's magnetic field captures part of the solar wind, and the display of lights comes from the many collisions between the particles. This natural phenomenon usually occurs in regions where the magnetic field poles define aurora ovals.Learn more about Weather & Tides
There are a number of social phenomena, especially in business settings; good examples include the Hawthorne effect, butterfly effect and John Henry effect. Socialists normally analyze social phenomena from different perspectives and at varying levels.Full Answer >
The Department of Geological Sciences at San Diego State University names extraterrestrial impacts, gravitational contraction and radioactive decay as the three main sources of Earth's internal heat. However, Earth's internal heat is much lower now than it was at the early period of the solar system’s existence.Full Answer >
The four common types of precipitation include rain, snow, hail and sleet. Precipitation occurs when water vapor forms in the atmosphere, condenses and falls to the ground.Full Answer >
A sunset occurs when the sun descends below the horizon and the light of the day slowly fades. This happens at different times depending on where you are in the world, the particular time of the year and the rotation of the earth. Regardless of when it happens, the sun setting usually marks the end of the day and the beginning of the night.Full Answer >