1. Measuring Earth Notes Page 10
Latitude & Longitude
Measuring Earth Notes Page 10
©Mark Place,

2. Let’s Look at This Question:
How is latitude measured?

3. To get to the next line of latitude, you must move 10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H
To get to the next line of
latitude, you must move
in which of two directions?
Latitude
Equator

4. 10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H
North
South

5. Latitude is measured
and
from the
North
South
Equator

6. Let’s Look at This Question:
How is longitude measured?

7. To get to the next line of longitude, you must move 10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H
To get to the next line of
longitude, you must move
in which of two directions?
Prime Meridian

8. 10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H
West
East

9. Longitude is measured
and
from the
East
West
Prime Meridian

10. Let’s do some plotting.

11. On the coordinate system, plot the coordinates given in your notes:10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H D A B C

12. State the coordinates for each of the letters in the figure above:10 20 30 40 50 60 70 80 90 15 45 75
105
120
135
150
165
180 E F G H
20°N, 75°E
65°N, 50°W
70°S, 15°E
10°S, 135°W

13. PLEASE TURN TO
PAGE 11
OF YOUR NOTES

14. BASED ON THE ____________
LATITUDE
ALTITUDE
BASED ON THE ____________
OF _______________
Demo
POLARIS

16. LATITUDE =
ALTITUDE

17. POLARIS CAN ONLY BE
SEEN IN THE
HEMISPHERE
NORTHERN

18. 25°N, 100°W
Altitude of Polaris
25°

19. 30°S, 100°E
Altitude of Polaris
Can't be seen!

20. 80°S, 65°W
Altitude of Polaris
Can't be seen!

21. 45°N, 105°E
Altitude of Polaris
45°

22. LONGITUDE
BASED ON EARTH’S
ROTATION

23. LONGITUDE
EACH HOUR,
EARTH ROTATES
15°
(360°/24hrs)

24. HOW MANY TIME ZONES?

25. HOW MANY TIME ZONES?
24 TIME ZONES
15° APART

26. People on the
same line of
longitude have
the same
Local Time

27. Example: Two students record a difference in local time of two
hours. How many degrees of
longitude apart are they?
15° x 2 hours = 30°