Map Reading and Navigation Flashcards

In navigation, what does the abbreviation 'UTM' stand for?

Answer: Universal Transverse Mercator

UTM stands for Universal Transverse Mercator, a widely used coordinate system that divides the Earth into 60 zones for precise location referencing.

Which U.S. Interstate highway designation convention indicates an even-numbered route?

Answer: An east-west route

In the U.S. Interstate Highway System, even-numbered Interstates run east-west, while odd-numbered Interstates run north-south.

What does a benchmark (BM) symbol on a USGS topographic map indicate?

Answer: A point of known elevation verified by survey

A benchmark is a surveyed point of precisely known elevation, marked on the ground with a brass disk and shown on maps with its elevation value.

When a map shows a road ending with a small circle or dot at its terminus, this typically indicates what?

Answer: A dead end or cul-de-sac

A small circle or dot at the end of a road symbol on a map usually indicates a dead end or cul-de-sac where the road does not continue.

What is 'triangulation' as used in traditional navigation and surveying?

Answer: Determining a location using angle measurements from known reference points

Triangulation is a technique for determining an unknown position by measuring angles to it from two or more known reference points and calculating where the lines intersect.

On a U.S. road map, what does a shield-shaped symbol with a number inside typically represent?

Answer: A designated highway route number

Shield-shaped symbols on road maps indicate designated highway route numbers, with the shape of the shield varying by highway type (Interstate, U.S. Route, State Route).

If a map shows a brown shaded area labeled 'desert,' what is this type of map feature called?

Answer: A land cover or land use classification

Colored or shaded areas on maps that indicate surface characteristics like desert, forest, or wetland represent land cover or land use classifications.