What is the purpose of a map key?

Map keys and explanations are included on a map to unlock it. They provide you with the information necessary for the card to make sense. Maps often use symbols or colors to represent things, and the map key explains what they mean.

What do the colors on a map mean?

Physical maps use color most dramatically to show changes in elevation. A palette of greens often shows heights. Dark green usually represents low-lying land, with lighter shades of green used for higher elevations. On physical maps, blues are used for water, with darker blues representing the deepest water.

What is the definition of a map key?

Map key definition. A map key is an insert on a map that explains the symbols, provides a scale, and usually identifies the type of map projection used. Technically, the key is part of the card legend. The key explains the symbols, while the legend holds the key and other information.

How is a map key related to the legend?

A map key is an insert on a map that explains the symbols, provides a scale, and usually identifies the type of map projection used. Technically, the key is part of the card legend. The key explains the symbols, while the legend holds the key and other information.

What is the purpose of symbols on a map?

Symbols provide important information about distances, geography and locations. Cards are extremely limited in what they can represent. Symbols are necessary to convey the information that maps provide. A map is a reduced representation of three-dimensional space.

Do you need a card key to unlock a card?

This makes maps invaluable tools. But unless a card has a card key to open it up, it doesn't make much sense. A map key or legend is included with a map to unlock it. It gives you the information necessary for the map to make sense. Maps often use symbols or colors to represent things, and the map key explains what they mean.