Longitudes in Geography
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Questions and Answers

What divides the earth into two equal halves?

  • The International Date Line and the Greenwich Meridian
  • The Equator and the Tropic of Cancer
  • The Arctic Circle and the Antarctic Circle
  • The Prime Meridian and the 180° meridian (correct)

    • What is the longitude of a place followed by?

  • The letter E for the east and W for the west (correct)
  • The number of the latitude
  • The letter N for the north and S for the south
  • The name of the country

    • What is the location of 180° East and 180° West meridians?

  • On the same line (correct)
  • At the North Pole
  • At the South Pole
  • On two different lines

    • What is needed to locate a point on the globe?

    <p>Both latitude and longitude</p> Signup and view all the answers

    What is represented by the vertical lines in Figure 2.7?

    <p>East Longitudes</p> Signup and view all the answers

    What is the best means of measuring time?

    <p>By the movement of the earth, the moon and the planets</p> Signup and view all the answers

    How can local time be reckoned?

    <p>By the shadow cast by the sun</p> Signup and view all the answers

    What is the location of Dhubri in Assam in terms of latitude and longitude?

    <p>26° N latitude and 90° E longitude</p> Signup and view all the answers

    What is the value of the prime meridian?

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

    Where is the frigid zone located?

    <p>The Poles</p> Signup and view all the answers

    How many longitudes are there in total?

    <p>360</p> Signup and view all the answers

    In which hemisphere is the Antarctic Circle located?

    <p>The Southern hemisphere</p> Signup and view all the answers

    What is a grid in the context of geography?

    <p>A network of parallels of latitudes and meridians of longitudes</p> Signup and view all the answers

    At which degree is the Tropic of Capricorn located?

    <p>23½° S</p> Signup and view all the answers

    What is the Standard Meridian of India?

    <p>77° E</p> Signup and view all the answers

    Towards which direction do the distances between longitudes decrease?

    <p>Towards the Poles</p> Signup and view all the answers

    What is the purpose of meridians of longitude?

    <p>To locate places precisely on the Earth's surface</p> Signup and view all the answers

    What is the unit of measurement for distances between meridians?

    <p>Degrees of longitude</p> Signup and view all the answers

    Why was it difficult to number the meridians?

    <p>Because they are of different lengths</p> Signup and view all the answers

    What is the name of the meridian that passes through Greenwich?

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

    What is the value of the Prime Meridian?

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

    What divides the Earth into the Eastern and Western Hemispheres?

    <p>The Prime Meridian</p> Signup and view all the answers

    What is the shape of meridians?

    <p>Semi-circles</p> Signup and view all the answers

    What happens to the distance between meridians as you move polewards?

    <p>It decreases steadily</p> Signup and view all the answers

    Study Notes

    Measuring Location on the Earth

    • To locate a place precisely, we need to find out how far east or west it is from a line of reference running from the North Pole to the South Pole.
    • These lines of reference are called meridians of longitude, and the distances between them are measured in degrees of longitude.

    Meridians of Longitude

    • Each degree of longitude is further divided into minutes and seconds.
    • Meridians are semi-circles that meet at the poles, where the distance between them decreases to zero.
    • All meridians are of equal length, unlike parallels of latitude.

    Prime Meridian

    • The Prime Meridian is the meridian that passes through Greenwich, where the British Royal Observatory is located.
    • Its value is 0° longitude, and countries decided to start counting from this meridian.
    • The Prime Meridian divides the earth into two equal halves, the Eastern Hemisphere and the Western Hemisphere.

    Longitude and Hemisphere

    • The longitude of a place is followed by the letter E for east and W for west.
    • 180° East and 180° West meridians are on the same line.
    • The Prime Meridian and 180° meridian divide the earth into two equal halves.

    Grid of Parallels and Meridians

    • The grid of parallels of latitude and meridians of longitude helps locate a point on the globe if we know its latitude and longitude.
    • For example, Dhubri in Assam is situated at 26° N latitude and 90° E longitude.

    Understanding Latitude and Longitude

    • Drawing equidistant vertical and horizontal lines on a paper helps understand the concept of latitude and longitude.
    • Vertical lines represent East Longitudes, and horizontal lines represent North Latitudes.
    • Where these lines intersect, we can locate a point on the globe.

    Time and Longitude

    • The movement of the earth, moon, and planets helps measure time.
    • Local time can be reckoned by the shadow cast by the sun, which is shortest at noon and longest at sunrise and sunset.

    Time Zones

    • The image shows time zones of the world, with the Prime Meridian as the reference point.

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    Related Documents

    Globe: Latitudes and Longitudes PDF

    Description

    Understanding longitudes in geography, measuring east-west distances from a reference line, and their importance in location.

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