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Information about Scale (spatial)

ScaleLengthAreaLocale
Micro1 m - 1 km1 m² - 1 km²local
Meso1 km - 100 km1 km² - 100 km²regional
Macro100 km - 10 000 km100 km² - 10 000 km²continental
Mega> 10 000 km>10 000 km²global


Spatial scale provides a "shorthand" form for discussing relative lengths, areas, distances and sizes. A microclimate, for instance, is one which might occur in a mountain valley or near a lakeshore, whereas a megatrend is one which involves the whole planet.

It is important to realize that these divisions are more or less arbitrary, and where, on this table, mega- is assigned global scope, it may only apply continentally or even regionally in other contexts. The interpretations of meso- and macro- must then be adjusted accordingly.

See also

External links

mountain is a landform that extends above the surrounding terrain in a limited area. A mountain is generally steeper than a hill, but there is no universally accepted standard definition for the height of a mountain or a hill although a mountain usually has an identifiable
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geology, a valley is a depression with predominant extent in one direction. A very deep river valley may be called a canyon or gorge.

The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys.
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planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, not massive enough to cause thermonuclear fusion in its core, and has cleared its neighbouring region of
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Astronomers use a number of different length units for different objects. The length unit used is typically determined by two criteria:
  1. the unit should create manageable numbers
  2. the unit should be easily derivable from observation

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The cosmic distance ladder is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement to an astronomical object is only possible for those objects that are "close enough" (within about a thousand
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List of orders of magnitude for length
Factor (m) Multiple Value Item
10−35 1.610−35 m Planck length; size of a string; lengths smaller than this do not make any physical sense, according to current theories of physics
. . .
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The Planck length, denoted by , is the unit of length approximately 1.6 × 10−35 metres, 6.3 × 10-34 inches, or about 10-20 times the diameter of a proton. It is in the system of units known as Planck units.
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The Universe is defined as the summation of all particles and energy that exist and the space-time in which all events occur. Based on observations of the portion of the Universe that is observable, physicists attempt to describe the whole of space-time, including all matter and
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