Answer key

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Last edited 43 days ago by Learn LoopHQ.

Chapter: 02. Elements Of A Map

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The International Date Line causes the day and date to change when it is crossed, due to a 24-hour time difference between its two sides.

A map’s title informs the user about the topic or subject that the map depicts.

The five basic elements of a map are the Title, Direction, Scale, Legend or Key, and Grid System.

A map scale is the ratio of the distance between two places on a map to the actual distance between the same two places on the ground.

Together, the Prime Meridian and the 180° longitude form a complete circle that divides the Earth into two halves: the Eastern Hemisphere and the Western Hemisphere.

On physical maps, the colour dark green conventionally represents natural vegetation, such as forests and woodlands.

The practical value of being able to use a compass is that it helps in finding directions on the ground, which is crucial for navigation and for assisting others who might need directions.

The four intermediate directions are North-East, South-East, South-West, and North-West.

Some map symbols are called “conventional signs and symbols” because they have been internationally agreed upon and accepted, allowing people from different countries to interpret maps universally.

In a Representative Fraction (RF) scale, the numerator is always 1, representing one unit of distance on the map.

The longest latitude is the Equator (0°), and it divides the Earth into the Northern and Southern Hemispheres.

The North direction is typically indicated by an arrow symbol pointing upwards at the top of the map or by assuming the top of the map represents North if no symbol is present.

The grid system on a map is a network of horizontal and vertical lines, known as latitudes and longitudes, that are drawn to aid in precise location.

Longitudes are vertical north-south lines that run from pole to pole and measure the angular distance east or west of the Prime Meridian.

The primary purpose of the Prime Meridian (0° longitude) is to serve as the reference line from which longitudes are measured, and it helps to determine time worldwide.

Three other important lines of latitude are the Tropic of Cancer (23 ½° N), the Tropic of Capricorn (23 ½° S), and the Arctic Circle (66 ½° N).

The grid system is important on maps because it allows for the precise location of any place on the Earth’s surface by identifying the intersection of its specific latitude and longitude coordinates.

A verbal or statement scale expresses the map scale in words, clearly stating the equivalence between map distance and ground distance, such as “1 cm = 5 km.”

The function of a legend or key on a map is to explain the meaning of all the colours, signs, and symbols used to represent features on the map.

Intermediate directions are important on a map because they allow for greater accuracy in pinpointing and describing locations beyond just the four cardinal points.

Latitudes are horizontal east-west lines, whereas longitudes are vertical north-south lines.

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