CH 5: Mapwork Skills
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Questions and Answers

What is the latitude of the Equator?

  • 0° (correct)
  • 90°
  • 180°
  • 45°

    • Which line is used to measure the north-south position on Earth?

  • Longitude
  • Tropic of Cancer
  • Prime Meridian
  • Equator (correct)

    • How many minutes can each degree of latitude and longitude be subdivided into?

  • 60 (correct)
  • 30
  • 100
  • 45

    • Which direction does the True Bearing measure angles relative to?

    <p>'N'</p> Signup and view all the answers

    If a place is described as 45° 20' 30" N, where is it located?

    <p>Northern Hemisphere</p> Signup and view all the answers

    What is magnetic declination?

    <p>The angle between true north and magnetic north</p> Signup and view all the answers

    How does the magnetic bearing in South Africa relate to true north?

    <p>It lies west of true north</p> Signup and view all the answers

    What happens when you subtract the magnetic declination from the magnetic bearing?

    <p>You find the true bearing</p> Signup and view all the answers

    In the conversion between square meters (m²) and hectares, what is the relationship?

    <p>1 hectare equals 100 m²</p> Signup and view all the answers

    Which measurement unit is typically used to express area in calculations for mapping and land use planning?

    <p>Square meters (m²)</p> Signup and view all the answers

    What is the relationship between square kilometers (km²) and hectares when converting?

    <p>1 km² equals 100 hectares</p> Signup and view all the answers

    In map calculations, if you know the true bearing, how can you find the magnetic bearing?

    <p>Add the magnetic declination to the true bearing</p> Signup and view all the answers

    Why is precise handling of measurements and conversions important in mapping and land use planning?

    <p>To avoid errors in location data</p> Signup and view all the answers

    What is the main purpose of geographic coordinates?

    <p>To define any location on Earth</p> Signup and view all the answers

    How are lines of latitude different from lines of longitude?

    <p>Latitude measures north-south position, and longitude measures east-west position</p> Signup and view all the answers

    What is the reference point for measuring true bearings?

    <p>The North Pole</p> Signup and view all the answers

    How is direction described using compass points?

    <p>With basic cardinal directions</p> Signup and view all the answers

    What does the Prime Meridian represent?

    <p>0° longitude</p> Signup and view all the answers

    How are degrees subdivided in geographic coordinates for precise pinpointing?

    <p>Each degree can be divided into 60 minutes and each minute into 60 seconds</p> Signup and view all the answers

    What is magnetic bearing?

    <p>The angle between true north and magnetic north</p> Signup and view all the answers

    How do you calculate true bearing?

    <p>Subtract the magnetic declination from the magnetic bearing</p> Signup and view all the answers

    What is the relationship between hectares and square meters?

    <p>1 hectare = 10,000 square meters</p> Signup and view all the answers

    Where does magnetic north lie in South Africa compared to true north?

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

    What does magnetic declination represent?

    <p>The angle between true north and magnetic north</p> Signup and view all the answers

    How do you convert square kilometers to hectares?

    <p>Multiply by 100</p> Signup and view all the answers

    Why is precise handling of measurements important in mapping and land use planning?

    <p>To ensure accurate results in mapping and planning</p> Signup and view all the answers

    What is the main purpose of lines of longitude?

    <p>To measure east-west position</p> Signup and view all the answers

    When subdividing degrees in geographic coordinates, what does each minute represent?

    <p>0.6 degrees</p> Signup and view all the answers

    What is the true bearing measured relative to?

    <p>True north</p> Signup and view all the answers

    What role do compass points play in understanding direction?

    <p>Helping describe direction between geographic features</p> Signup and view all the answers

    How are minutes in geographic coordinates further subdivided for pinpointing precise locations?

    <p>Into seconds</p> Signup and view all the answers

    In terms of geographic positioning, what does the Prime Meridian represent?

    <p>0° longitude</p> Signup and view all the answers

    When calculating the magnetic bearing, what should be added to the true bearing?

    <p>Magnetic declination</p> Signup and view all the answers

    For area calculations, what is the relationship between hectares and square meters?

    <p>1 hectare = 10,000 square meters</p> Signup and view all the answers

    Where does magnetic declination come into play when calculating bearings?

    <p>It is added to the true bearing to calculate magnetic bearing</p> Signup and view all the answers

    In South Africa, where does magnetic north lie in relation to true north?

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

    What is the purpose of calculating true bearings in navigation and mapping?

    <p>To establish positions relative to true north</p> Signup and view all the answers

    In geographic measurements, what is the reference point for calculating magnetic bearings?

    <p>Magnetic North Pole</p> Signup and view all the answers

    '1 km² equals how many hectares?' - This question would be most relevant in which context?

    <p>Area calculations for land use planning</p> Signup and view all the answers

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