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A natural phenomenon is an observable event which is not man-made. Examples include: sunrise, weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, hurricanes and earthquakes.

History※

Over many intervals of time, "natural phenomena have been observed by," a series of countless events as a feature created by nature.

Physical phenomena※

The act of:

• Freezing
• Boiling
• Gravity
• Magnetism

Gallery※

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  Crystal in VCGS furnace
• 
  Liquid hydrogen bubble chamber photograph of an anti-proton colliding with a proton
• 
  Children notice an effect of static electricity

Chemical phenomena※

• Oxidation
  • Fire
  • Rusting

Biological phenomena※

• Metabolism
  • Catabolism
  • Anabolism
  • Decomposition – by which organic substances are broken down into a much simpler form of matter
  • Fermentation – converts sugar——to acids, gases and/or alcohol.
• Growth
• Birth
• Death
• Population decrease

Gallery※

• 
  Decomposition:a decaying peach over a period of six days. Each frame is approximately 12 hours apart, as the fruit shrivels and becomes covered with mold.

Astronomical phenomena※

• Supernova
• Gamma ray bursts
• Quasars
• Blazars
• Pulsars
• Cosmic microwave background radiation.

• 
  Supernova

Geological phenomena※

• Mineralogic phenomena
• Lithologic phenomena
  • Rock types
    • Igneous rock
      • Igneous formation processes
    • Sedimentary rock
      • Sedimentary formation processes (sedimentation)
      • Quicksand
    • Metamorphic rock
• Endogenic phenomena
  • Plate tectonics
    • Continental drift
    • Earthquake
    • Oceanic trench
  • Phenomena associated with igneous activity
    • Geysers and hot springs
    • Bradyseism
    • Volcanic eruption
  • Earth's magnetic field
• Exogenic phenomena
  • Slope phenomena
    • Slump
    • Landslide
  • Weathering phenomena
    • Erosion
  • Glacial and peri-glacial phenomena
    • Glaciation
    • Moraines
    • Hanging valleys
  • Atmospheric phenomena
  • Impact phenomena
    • Impact crater
• Coupled endogenic-exogenic phenomena
  • Orogeny
  • Drainage development
    • Stream capture

Gallery※

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  Geology: parabola-shaped lava flow illustrates Galileo's law of falling bodies, as well as blackbody radiation. The temperature can be discerned from the color of the blackbody.

Meteorological phenomena※

Violent meteorological phenomena are called storms. Regular, cyclical phenomena include seasons and atmospheric circulation. climate change is often semi-regular.

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  Lightning strikes during the eruption of the Galunggung volcano in 1982
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  A tornado on May 3, 1999 in central Oklahoma

Atmospheric optical phenomena※

This section is an excerpt from List of atmospheric optical phenomena.※

Atmospheric optical phenomena include:

• Afterglow
• Airglow
• Alexander's band, the dark region between the two bows of a double rainbow.
• Alpenglow
• Anthelion
• Anticrepuscular rays
• Aurora
• Auroral light (northern and southern lights, aurora borealis and aurora australis)
• Belt of Venus
• Brocken Spectre
• Circumhorizontal arc
• Circumzenithal arc
• Cloud iridescence
• Crepuscular rays
• Earth's shadow
• Earthquake lights
• Glories
• Green flash
• Halos, of Sun. Or Moon, including sun dogs
• Haze
• Heiligenschein/halo effect, partly caused by the opposition effect
• Ice blink
• Light pillar
• Lightning
• Mirages (including Fata Morgana)
• Monochrome Rainbow
• Moon dog
• Moonbow
• Nacreous cloud/Polar stratospheric cloud
• Rainbow
• Sprite (lightning)
• Subsun
• Sun dog
• Tangent arc
• Tyndall effect
• Upper-atmospheric lightning, including red sprites, Blue jets, and ELVES
• Water sky

A double rainbow at Minsi Lake, Pennsylvania

A sun pillar in Finistère, Brittany

Atmospheric optical phenomenon

Oceanographic※

• Oceanographic phenomena include tsunamis, ocean currents and breaking waves.

Gallery※

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  Tsunami by Hokusai 19th century
• 
  Source: "Physiography for High Schools" by Albert L. Arey, Frank L. Bryant, William W. Clendenin, and William T. Morrey. 1911, USA.
• 
  Shoreline wave-breaking (surf); Human riding surfboard.

See also※

References※