Isthmus
is a narrow strip of land connecting two larger land areas, usually with water on either side. A
peninsula
is a piece of land that is
almost
surrounded by h2o but connected to mainland (via an isthmus). And so a peninsula is oft defined every bit country surrounded by h2o on three sides.

Comparison chart

Isthmus versus Peninsula comparison chart
Edit this comparison chart Isthmus Peninsula
Water surrounding the landmass On 2 sides (the other two sides is land that the narrow isthmus connects) On three sides
Size Narrow, commonly not very long when compared to the state mass information technology connects to Significant
Access by Land, air and h2o Land, air and h2o
Formation Isthmuses are formed via a series of events like shift in the tectonic plates and volcanic eruption. Peninsulas are formed through a gradual rising in water level, surrounding land at low superlative.
Unmarried or in groups Unmarried Single
Inhabitation Normally uninhabited Usually inhabited
Examples Isthmus of Suez betwixt North Africa and Sinai Peninsula; Isthmus of Panama, connecting Northward and South America Horn of Africa or Somali peninsula, Somalia Paria Peninsula, Venezuela, Indian Peninsula
Plural Isthmuses or Isthmi Peninsulas

Formation

Peninsula

A peninsula connected to the mainland via an isthmus

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A peninsula continued to the mainland via an isthmus

Virtually commonly, peninsulas are formed via rising water levels due to increased temperatures and typically where the land is at a low elevation. Gradual ascent in the water level leads the land to exist surrounded by h2o on three sides, and develop into a peninsula.

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Isthmus

The Panama isthmus is a good example of how isthmus is formed. Before this isthmus was formed North America was separated from South America. A series of events similar shift in the tectonic plates and volcanic eruption acquired the seabed to rise and underwater volcanoes emerged out of the water forming some sort of solid land. These chip and pieces of land were joined together past sediments brought from adjoining land of N and South America. It took millions of years for this Isthmus to come up into being.

Etymology

Isthmus
is derived from ancient Greek discussion
isthmu
meaning neck; while
peninsula
is derived from a Latin word
paeninsula, where “paene” means nigh and “insula” means island. Therefore, a peninsula, is “about an island”. A peninsula is too called Half-island, a headland (head), cape or island promontory.

The plural of isthmus is
isthmuses
or
isthmi
and the plural class of peninsula is
peninsulas.

Famous Peninsulas and Isthmuses

An isthmus

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An isthmus

The Arabian Peninsula is the largest peninsula on globe. Information technology sits on Arabian tectonic plate, which is slowly moving abroad from Africa towards the Eurasian plate. The continent of Europe is also a peninsula, with the Mediterranean Sea on the South, the Atlantic Ocean on the W, the North Sea and Baltic Sea on the North and Asia to the East.

The Panama Isthmus is the most famous isthmus. Its formation is considered one of the most important geological event to happen on Earth. It had an enormous touch on on the climate and surround. It re-routed the currents in both the Atlantic and Pacific Oceans. It straight and indirectly influenced bounding main and atmospheric circulation patterns, which regulated patterns of rainfall. It led to migration of livings things from and to North and South America.

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References

  • http://en.wikipedia.org/wiki/List_of_peninsulas
  • http://en.wikipedia.org/wiki/Isthmus
  • http://en.wikipedia.org/wiki/Peninsula
  • http://earthobservatory.nasa.gov/IOTD/view.php?id=4073
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