Grade 8 Map Skills: Lines of Latitude and Longitude
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Questions and Answers

What does the number 18 represent on the map code of Cape Town?

  • Line of longitude (correct)
  • Region
  • Equator crossing
  • Windiness

    • What does the number 33 represent on the map code of Cape Town?

  • Equator crossing
  • Region
  • Windiness
  • Latitude (correct)

    • What does the change in minutes signify as one moves south on the map?

  • Decrease in latitude
  • Region boundaries
  • Longitudinal shift (correct)
  • Increase in windiness

    • What does the change in minutes signify as one moves east on the map?

    <p>Longitudinal shift</p> Signup and view all the answers

    What does the code '39 DC' represent?

    <p>Region east of Cape Town</p> Signup and view all the answers

    What is the largest arc of latitude on Earth?

    <p>Equator</p> Signup and view all the answers

    Which line of longitude is also known as the Prime Meridian?

    <p>Greenwich Meridian</p> Signup and view all the answers

    In what direction do lines of latitude run around the world?

    <p>East to West</p> Signup and view all the answers

    What is the value in degrees of the equator?

    <p>0 degrees</p> Signup and view all the answers

    What symbols are used to represent degrees, minutes, and seconds respectively?

    <p>°, ', &quot;</p> Signup and view all the answers

    Why are lines of latitude called parallel arcs?

    <p>Because they run parallel to each other</p> Signup and view all the answers

    On a topographical map of Cape Town, which direction does the line of latitude move from 55' to 59'?

    <p>SOUTHERLY</p> Signup and view all the answers

    Which line divides Earth into 180° east and 180° west?

    <p>Greenwich Meridian</p> Signup and view all the answers

    Why does the South African map measure coordinates in a Southerly and Easterly direction?

    <p>Because of the best of the Prime Meridian</p> Signup and view all the answers

    In South Africa, how many seconds are there in a minute when measuring coordinates?

    <p>60</p> Signup and view all the answers

    Which symbols are used to divide degrees, minutes, and seconds?

    <p>/, :, .</p> Signup and view all the answers

    What do the letters A to D and numbers 1 to 10 signify on a Cape Town topographical map?

    <p>Grid references for important features</p> Signup and view all the answers

    What is the main scale used for topographical maps in Geography?

    <p>1:50 000</p> Signup and view all the answers

    Which symbol represents Kilometres in the metric system?

    <p>km</p> Signup and view all the answers

    What does 'cm' stand for in the context of measuring distance?

    <p>Centimetres</p> Signup and view all the answers

    Which scale type is represented by a line on the map indicating the actual distance on the ground?

    <p>Linear scale</p> Signup and view all the answers

    What is a way to remember the metric system prefixes in order from the largest to the smallest unit?

    <p>My King Henry Died Measuring Distances Correctly</p> Signup and view all the answers

    What is the distance unit symbol for 'millimeters'?

    <p>mm</p> Signup and view all the answers

    If L = 3 cm and B = 4 cm, what is the area of the block in square kilometers?

    <p>6 km²</p> Signup and view all the answers

    When calculating the area of a block in hectares, which of the following values should be multiplied by 500/10 000?

    <p>The total area in square kilometers</p> Signup and view all the answers

    If the length of a block C2 is 5 cm and the breadth is 4 cm, what is the calculated area in square kilometers?

    <p>9 km²</p> Signup and view all the answers

    For Block D1 and D2, if the length is 6 cm and the breadth is 3 cm, what is the area in hectares?

    <p>2 ha</p> Signup and view all the answers

    What is the correct calculation for converting a measurement to hectares?

    <p>Multiply by 500/10 000</p> Signup and view all the answers

    Study Notes

    Cape Town Map Codes and Coordinates

    • The number 18 on the map code signifies a specific grid square or area within Cape Town.
    • The number 33 represents another defined grid square or area on the map of Cape Town.
    • Moving south on the map indicates an increase in minutes, showing a progression towards the South Pole.
    • Moving east indicates a change in minutes, reflecting a journey towards the Prime Meridian and the International Date Line.
    • The code '39 DC' refers to a specific cartographic or geographical designation in Cape Town, identifying a unique area.

    Geographic Fundamentals

    • The largest arc of latitude on Earth is the Equator.
    • The Prime Meridian, designated as 0°, runs longitudinally and divides the Earth into east and west hemispheres.
    • Lines of latitude run parallel to the Equator, encircling the globe horizontally.
    • The Equator is established at 0° latitude.
    • Degrees (°), minutes ('), and seconds (") are represented by respective symbols for accurate geographical measurements.

    Latitude and Longitude Characteristics

    • Lines of latitude are referred to as parallel arcs because they maintain consistent distances from each other and do not intersect.
    • On a topographical map of Cape Town, moving from 55' to 59' latitude indicates a shift in northern or southern position.
    • The International Date Line separates the Earth into 180° east and 180° west longitudinally.
    • South African maps measure coordinates in a Southerly and Easterly direction due to geographical positioning relative to the Equator and the Prime Meridian.

    Measurement Units and Map Scales

    • In South Africa, there are 60 seconds in a minute when measuring geographic coordinates.
    • The symbols for degrees, minutes, and seconds used are °, ', and " respectively.
    • On a Cape Town topographical map, letters A to D and numbers 1 to 10 designate various grid sections for clarity and navigation.
    • The main scale used for topographical maps in Geography is typically a ratio or representative fraction (e.g., 1:50,000).
    • Kilometres in the metric system are denoted by the symbol 'km'.
    • 'cm' stands for centimeters, indicating a metric unit of measurement for shorter distances.

    Map Scale Types and Metric System

    • A line scale on a map indicates actual distances on the ground, providing a visual representation of distances.
    • A mnemonic for remembering metric system prefixes in order is "King Henry Died By Drinking Chocolate Milk," standing for kilo-, hecto-, deka-, base unit, deci-, centi-, milli-.
    • The distance unit symbol for 'millimeters' is 'mm'.

    Area Calculations and Conversions

    • For a block with length L = 3 cm and breadth B = 4 cm, the area equals 12 square centimeters (not yet in square kilometers).
    • When calculating area in hectares, values should be multiplied by 500/10,000 for conversion purposes.
    • For Block C2 with length 5 cm and breadth 4 cm, the area calculated is 20 square centimeters.
    • For Blocks D1 and D2 with lengths of 6 cm and breadth of 3 cm, the area in hectares needs conversion techniques, considering 1 hectare equals 10,000 m².
    • To convert a measurement into hectares, divide the area in square meters by 10,000.

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    Test your knowledge on lines of latitude and longitude, including the characteristics of parallel arcs and their sizes on Earth. Explore concepts like the equator, North Pole, Arctic Circle, and Tropic of Cancer.

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