- What is the difference between Mercator and Gnomonic projections?
- What is the problem with the Mercator projection?
- What is wrong with the Robinson projection?
- Is Greenland larger than USA?
- What are the advantages and disadvantages of a Mercator projection?
- What are the advantages of planar projection?
- Which projection does National Geographic use now?
- What are the pros and cons of using a Mercator map projection?
- What is the difference between Mercator and Robinson projection?
- What is the Mercator projection good for?
- What does Mercator projection mean?
- What are the advantages and disadvantages of azimuthal projection?
- Why does Google Maps use Mercator?
- Why is Africa smaller on the map?
- What does Robinson map mean?
What is the difference between Mercator and Gnomonic projections?
Mercator projections are often referred to as cylindrical maps.
They represent Earth with parallel lines of latitude and longitude.
The gnomonic projection projects points from a globe onto a piece of paper that touches the globe at a single point.
It creates circle routes often used in air travel..
What is the problem with the Mercator projection?
Mercator maps distort the shape and relative size of continents, particularly near the poles. This is why Greenland appears to be similar in size to all of South America on Mercator maps, when in fact South America is more than eight times larger than Greenland.
What is wrong with the Robinson projection?
The Robinson projection is neither conformal nor equal-area. It generally distorts shapes, areas, distances, directions, and angles. The distortion patterns are similar to common compromise pseudocylindrical projections. Area distortion grows with latitude and does not change with longitude.
Is Greenland larger than USA?
United States is about 4.5 times bigger than Greenland. Greenland is approximately 2,166,086 sq km, while United States is approximately 9,833,517 sq km, making United States 354% larger than Greenland. … This to-scale map shows a size comparison of Greenland compared to United States.
What are the advantages and disadvantages of a Mercator projection?
Advantage: The Mercator map projection shows the correct shapes of the continents and directions accurately. Disadvantage: The Mercator map projection does not show true distances or sizes of continents, especially near the north and south poles.
What are the advantages of planar projection?
Because area and shape distortion are circular around the point of contact, planar projections accommodate circular regions better than rectangular regions. For this reason, they are used most often to map polar regions.
Which projection does National Geographic use now?
Mollweide projectionCartographers at National Geographic chose to use a version of the Mollweide projection for their map highlighting ocean floors, published as the map supplement in the September 2012 issue of National Geographic magazine. This Mollweide projection is referred to as a pseudocylindrical projection.
What are the pros and cons of using a Mercator map projection?
MercatorPros: Sailors loved it; preserves angles and directions in a small area.Cons: Bad for understanding the real size and shape of continents and countries.Related: After this video you’ll never trust a map again.Pros: The only ‘area-correct’ map of its time; got featured in The West Wing (S2E16)More items…•
What is the difference between Mercator and Robinson projection?
Unlike the Mercator projection, the Robinson projection has both the lines of altitude and longitude evenly spaced across the map. … In opting for a more pleasing appearance, the Robinson projection ‘traded’ off distortions – this projection is neither conformal, equal-area, equidistant nor true direction.
What is the Mercator projection good for?
This projection is widely used for navigation charts, because any straight line on a Mercator projection map is a line of constant true bearing that enables a navigator to plot a straight-line course.
What does Mercator projection mean?
: a conformal map projection of which the meridians are usually drawn parallel to each other and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator.
What are the advantages and disadvantages of azimuthal projection?
List of the Disadvantages of Azimuthal ProjectionIt applies well when looking from a polar perspective only. … A perspective azimuthal projection cannot plot out the entire Earth. … Distortions increase as the distance expands on the map. … It creates an awkward perspective when used for centering purposes.More items…•
Why does Google Maps use Mercator?
Google Maps mainly uses the Mercator projection because it allows to preserve the angles. At first, Google Maps did not use this projection, and as a consequence in cities at high latitudes, right angles could not be maintained on roads and the like.
Why is Africa smaller on the map?
It’s all down to the European cartographer Geert de Kremer, better known as Mercator, and his 16th century map projection – a common template for world maps today – which distorts the size of countries.
What does Robinson map mean?
The Robinson projection is a map projection of a world map which shows the entire world at once. It was specifically created in an attempt to find a good compromise to the problem of readily showing the whole globe as a flat image. … Robinson published details of the projection’s construction in 1974.