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Q: Why it might be necessary to update contour maps from time to time?
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Related questions

What kind of map measures mountains heights?

Contour Maps,actually,contour maps measure their elevations.


What do elevation maps use to show elevation?

Maps can show elevation with contour lines


How do you explain contour maps?

contour maps are maps that depict contour line. they contain lines of equal heights that are joined together and help to show elevations, terrain shape and many other features of the earth


What are labeled with elevation in round units?

Contour maps.


What symbols are used on topographic maps?

Contour Lines


What is a maps height line called?

longitude


Does a world map connect points of equal elevations?

A world map doesn't have to connect points of equal elevation, but there are world maps that do and they are called contour maps. See the link for additional information about contour maps.


Do you have to update maps on a Garmin?

You can update the maps on garmin.com. You can update whenever you wish, but if you purchase a lifetime subscription, you will receive 4 updates per year.


Why is there a difference between NZ contour lines and Australian contour lines?

Maps can be created with differing scales. These days, it's childishly simple for the cartographer to change any scale on any parameter before printing. It's possible one of your maps is 10 meters/interval while the other is 5 Or, if one of your maps was printed before SI was made standard, it might be 'Imperial' Or, if one of your maps was published in US First things to check on any map; Date, scale, orientation, contour interval


What represents hilltops on maps?

very tight contour lines


Are Geologic maps are most recognized by their colors?

Contour lines


What are some GOOD facts about topographic maps?

topographic maps have contour lines that show a specific place...