Book -1 Std -10

1. Book -1 Std -10

2. Relative Location • Location expressed using landmarks • Behind Big Bazaar • Opposite Shiv Temple • Near Patel Pan • Absolute Location • Location expressed using known grid system • 19° N; 78° E

3. Latitudes and longitudes Eastings and Northings

6. Conclusion • Both grid systems do not overlap • System of Eastings and Northings is more accurate • System of Eastings and Northings is simpler

8. First two digits are eastings • Next two digits are northings • By convention, lesser value is always taken

9. PAMERA • MALGAON • 1520 • GULABGANJ • 1820 OR 1920

10. First two digits are eastings • 3rd digit is the 10th division of eastings • Next two digits are northings • 6th digit is the 10th division of northings

11. 0 1 2 3 4 5 6 7 8 9 9 8 7 6 5 4 3 2 1 0 EXPRESSING THE LOCATION AS A SIX FIGURE GRID REFERENCE 26 25 • 4 figure grid reference • is 2577 • Six figure grid reference of temple is 78 3 1 77

12. 4 figure grid reference • 6 figure grid reference

13. 25 26 78 77 EXPRESSING THE LOCATION AS A SIX FIGURE GRID REFERENCE • 4 figure grid reference • is 2577 • Six figure grid reference • A – 256778 • B – 258775

14. 25 26 78 77 • 6 figure reference of G is • x = a / 2 • y = b / 2 • Truncate the decimals • If a = 13 mm; b = 11 mm • 6 figure grid reference is • 256775 20 mm G a b

15. Guided practice Start working on the assignment sheet

16. End of Presenattion