Some geographical texts refer to a Eurasian continent given that Europe is not surrounded by sea and its southeastern border has always been variously defined for centuries.
In terms of shape, Europe is a collection of connected peninsulas and nearby islands. The two largest peninsulas are Europe itself and Scandinavia to the north, divided from each other by the Baltic Sea. Three smaller peninsulas—Iberia, Italy, and the Balkans—emerge from the southern margin of the mainland. The Balkan peninsula is separated from Asia by the Black and Aegean Seas. Italy is separated from the Balkans by the Adriatic Sea, and from Iberia by the Mediterranean Sea, which also separates Europe from Africa. Eastward, mainland Europe widens much like the mouth of a funnel, until the boundary with Asia is reached at the Ural Mountains and Ural River, the Caspian Sea, and the Caucasus Mountains.
Land relief in Europe shows great variation within relatively small areas. The southern regions are mountainous while moving north the terrain descends from the high Alps, Pyrenees, and Carpathians, through hilly uplands, into broad, low northern plains, which are vast in the east. An arc of uplands also exists along the northwestern seaboard, beginning in southwestern Ireland, continuing across through western and northern Great Britain, and up along the mountainous, fjord-cut spine of Norway.
This description is simplified. Sub-regions such as Iberia and Italy contain their own complex features, as does mainland Europe itself, where the relief contains many plateaus, river valleys, and basins that complicate the general trend. Iceland and the British Isles are special cases. The former is of North Atlantic volcanic formation, while the latter consist of upland areas once joined to the mainland until cut off by rising sea levels.
Peninsula of peninsulas
Europe is sometimes called a "peninsula of peninsulas", to draw attention to the fact that Europe is a relatively small, elongated appendage to Asia, and that a large part of Europe is made up of peninsulas.[2] A prehistoric perspective would include Britain and Ireland as the core of a further very significant European peninsula prior to the post-glacial rise in sea-levels.[3]
Europe's most significant geological feature is the dichotomy between the highlands and mountains of Southern Europe and a vast, partially underwater, northern plain ranging from Great Britain in the west to the Ural Mountains in the east.[citation needed] These two halves are separated by the mountain chains of the Pyrenees and the Alps/Carpathians. The northern plains are delimited in the west by the Scandinavian Mountains and the mountainous parts of the British Isles. The major shallow water bodies submerging parts of the northern plains are the Celtic Sea, the North Sea, the Baltic Sea complex, and the Barents Sea.
The northern plain contains the old geological continent of Baltica, and so may be regarded as the "main continent", while peripheral highlands and mountainous regions in south and west constitute fragments from various other geological continents.
The geology of Europe is hugely varied and complex, and gives rise to the wide variety of landscapes found across the continent, from the Scottish Highlands to the rolling plains of Hungary.
This section needs expansion. You can help by adding to it. (March 2011)
Population
Throughout history, the population of Europe has been affected by migration into and out of the continent, disease and conflict. Figures for the population of Europe vary according to which definition of European boundaries is used. The population within the standard physical geographical boundaries was 701 million in 2005 according to the United Nations. In 2000 the population was 857 million, using a definition which includes the whole of the transcontinental countries of Russia and Turkey. Population growth is comparatively slow, and median age comparatively high in relation to the world's other continents.
Land area in different classes of European mountainous terrain (classification from UNEP-WCMC):
Altitude
Area (km2)
% Area
≥4500m
1
0.00%
3500-4500m
225
0.00%
2500-3500m
497,886
4.89%
1500-2500m & slope ≥2°
145,838
1.43%
1000-1500m & slope ≥5° or local elevation range >300m
345,255
3.39%
300-1000m and local elevation range >300m
1,222,104
12.00%
Mountainous TOTAL
2,211,308
21.72%
Europe TOTAL
10,180,000
100.00%
Temperature and precipitation
The high mountainous areas of Europe are colder and have higher precipitation than lower areas, as is true of mountainous areas in general. Europe has less precipitation in the east than in central and western Europe. The temperature difference between summer and winter gradually increases from coastal northwest Europe to southeast inland Europe, ranging from Ireland, with a temperature difference of only 10 °C from the warmest to the coldest month, to the area north of the Caspian Sea, with a temperature difference of 40 °C. January average range from 13 °C in southern Spain and southern Greek islands to -20 °C in the northeastern part of European Russia. Desert climates are found in the European portion of Kazakhstan and South Eastern Spain.
Western Europe and parts of Central Europe generally fall into the temperate maritime climate (Cfb), the southern part is mostly a Mediterranean climate (mostly Csa, smaller area with Csb), the north-central part and east into central Russia is mostly a humid continental climate (Dfb) and the northern part of the continent is a subarctic climate (Dfc). In the extreme northern part (northernmost Russia; Svalbard), bordering the Arctic Ocean, is tundra climate (Et). Mountain ranges, such as the Alps and the Carpathian mountains, have a highland climate with large variations according to altitude and latitude.
Note: Italy's capital, Rome, is the country's largest city if only the municipality (comune) is considered. Greater Milan is the largest metropolitan area in Italy.