Terrestrial and planetary
Flat maps are created using a
map projection that inevitably introduces an increasing amount of distortion the larger the area that the map shows. A globe is the only representation of the Earth that does not distort either the shape or the size of large features – land masses, bodies of water, etc.
circumference of the Earth is quite close to 40 million metres.
 Many globes are made with a circumference of one metre, so they are models of the Earth at a scale of 1:40 million. In imperial units, many globes are made with a
diameter of one
, yielding a circumference of 3.14 feet and a scale of 1:41,777,000. Globes are also made in many other sizes.
Sometimes a globe has surface texture showing
topography; in these, elevations are exaggerated, otherwise they would be hardly visible. Most modern globes are also imprinted with
meridians, so that one can tell the approximate
coordinates of a specific place. Globes may also show the boundaries of countries and their names, a feature that can quickly become out of date, as countries change their name or borders.
Many terrestrial globes have one celestial feature marked on them: a diagram called the
analemma, which shows the apparent motion of the Sun in the sky during a year.
Globes generally show north at the top, but many globes allow the axis to be swiveled so that southern portions can be viewed conveniently. This capability also permits exploring the earth from different orientations to help counter the
north-up bias caused by conventional presentation.