1. After School Review Commack High School
Mapping
After School Review
Commack High School

2. Never eat shredded wheat!
Latitude & Longitude
Cardinal Directions
Never eat shredded wheat!
North
South
East
West
K. Corbisiero 2010

3. North or South of the equator Equator is 0° and Poles are 90°
Latitude
Horizontal lines
North or South of the equator
Equator is 0° and Poles are 90°
Latitude is based on the altitude of Polaris (Northern hemisphere only)
Polaris is the North Star
K. Corbisiero 2010

4. Equatorial and polar views:
Latitude
Equatorial and polar views:
K. Corbisiero 2010

5. Equatorial and polar views:
Latitude
Equatorial and polar views:
K. Corbisiero 2010

6. Latitude Draw the 30S latitude line through Birdsville.
K. Corbisiero 2010

7. CAN NOT Polaris (North Star)
Altitude of Polaris equals your latitude in the Northern Hemisphere
At latitude 0°, Polaris’ altitude is 0°.
At 90°N, Polaris’ altitude is 90°
You ___________ see Polaris from the Southern Hemisphere!
CAN NOT
K. Corbisiero 2010

8. 20°N Polaris (North Star)
What is the latitude of the observer below? __________
20°N
K. Corbisiero 2010

9. East or West of the Prime Meridian
Longitude
Vertical Lines
East or West of the Prime Meridian
Prime Meridian is 0°, International Date Line is 180°.
Longitude is based on observations of the Sun and gives us time zones
K. Corbisiero 2010

10. Equatorial and polar views:
Longitude
Equatorial and polar views:
K. Corbisiero 2010

11. Equatorial and polar views:
Longitude
Equatorial and polar views:
K. Corbisiero 2010

12. Longitude Draw a line for the longitude of the X below.
K. Corbisiero 2010

13. Compare Latitude & Longitude
Latitude Slices
Longitude Wedges

14. Coordinates Writing Coordinates Latitude is ALWAYS written first!
Must include the hemisphere!
Longitude Direction spells WE across the Prime Meridian.
K. Corbisiero 2010

15. Determine the coordinates of the following locations:
Northridge ____________________
Bakersfield ____________________
San Diego ____________________
34°N,118.5°W
35.5°N,119°W
32.5°N,117.5°W
K. Corbisiero 2010

16. North
West

17. Use page 3 of your ESRT’s to determine the coordinates:
Mt. Marcy ____________________
Niagara Falls ____________________
44°05’N,73°58’W
43°10’N,79°01’W
K. Corbisiero 2010

18. Syracuse, NY Slide Mountain Riverhead, NY
Reading Coordinates - Pages 3, 4, & 5 ESRT’s
Write the names of the following locations using NYS map:
43°05’N, 76°05’W ___________________
42°N, 74°25’W ___________________
40°55’N, 72°40’W ___________________
Syracuse, NY
Slide Mountain
Riverhead, NY
K. Corbisiero 2010

19. NE NW SW SE

20. Tasman Hot Spot Hawaii Hot Spot Galapagos Hot Spot
Name the following locations using your ESRT’s (pg 5):
35°S, 160°E ________________________
20°N, 155°W ________________________
0°, 98°W ________________________
Tasman Hot Spot
Hawaii Hot Spot
Galapagos Hot Spot
K. Corbisiero 2010

21. On the diagram, place an X at 15S, 30W.
K. Corbisiero 2010

22. Time Zones
Solar Noon – Sun reaches highest altitude in the sky. Points on same line of longitude have same solar time.
Local Time – the time for a specific area or location.
Greenwich Mean Time (GMT) – the time at the Prime Meridian.
Rate of Rotation = 15°/hr – Earth rotates 360° in 24 hrs.
Every 15° = 1 hour
Move left, time decreases
Move right, time increases
K. Corbisiero 2010

23. 11 p.m. 12 Noon Time Zones in the US:
When it is 1 a.m. in NYC what time is it in Denver? __________________
When it is 10 a.m. in San Francisco what time is it in Dallas? __________________
NOTE: Never write 12 a.m. or p.m.!!
Only write 12 noon or 12 midnight!
11 p.m.
12 Noon
K. Corbisiero 2010

24. If it is 4 p.m. at point B, what time is it at point A? __________
If it was 3 a.m. at point A, what time would it be at point B? _____________
12 Noon
7 a.m.
K. Corbisiero 2010

25. Isolines Isolines connect points of equal value. Isolines never cross!
They can be: temperature (isotherms), pressure (isobars), elevation (contour lines), and any value that can be mapped.
All higher values are on one side of the line, all lower values are on the other.
Intervals (what they increase by) can vary.
Lines should always be drawn to the edge of the map.
K. Corbisiero 2010

26. Draw the isoline for the depth of the water at an interval of 10 feet starting with 10.
K. Corbisiero 2010

27. Calculating Gradient Equation Page 1 ESRT’s
Field Value will be whatever the isolines represent (if there are any).
Use whatever diagram they provide to you.
Use the map scale to determine the distance.
K. Corbisiero 2010

28. = 10 ft/mile Gradient = change in field distance = 16,000 ft- 8000 ft
Calculate the gradient between points A & D of the ocean floor:
Gradient = change in field
distance
= 16,000 ft ft
900 miles – 100 miles
= 10 ft/mile
K. Corbisiero 2010

29. = .016 mb/km 4 mb 981 mb 1023 mb Gradient = G = change in field
Calculate the pressure gradient between points A and B below:
Gradient =
What is the pressure interval? ________________
G = change in field
distance
= 1016 mb – 1000mb
1000 km
= .016 mb/km
4 mb
What is the lowest possible pressure in the center of the low pressure system? ______________________
What is the highest possible pressure in the center of the high pressure system? ______________
981 mb
1023 mb
K. Corbisiero 2010

30. Topographic Maps
A topographic map is a 2-D representation of a 3-D surface area.
K. Corbisiero 2010

31. East Streams – two ways to determine direction it flows:
. Always flow from high to low elevation
2. Contour lines bend upstream, flow is opposite.
What direction are the two rivers flowing?
East
K. Corbisiero 2010

32. West Steepness of slope: Closer lines = steeper
Which side of the mountain is steeper, East or West?
West
K. Corbisiero 2010

33. 60 Depressions are shown using hachure marks.
The first hachure is always the same value as the line before it. 60
K. Corbisiero 2010

34. Profiles – a side view Line a piece of paper up along D-E
Be sure D is on the left!
Mark a spot on the paper starting at D and ending at E, where each contour line hits it.
Label the elevation at each mark.
Streams do NOT count as a mark!
NOTE: profiles can go up, down (or both), and can go below the surface (underwater) x
K. Corbisiero 2010

35. 10 meters West . What is the elevation at point A? ______________
. What direction is Amethyst River flowing? ______________
West
K. Corbisiero 2010

36. M & N M & N has steeper slope
. Is copper creek flowing faster between points M & N or K & L? ___________________________
. How do you know? _________________________
M & N
M & N has steeper slope
K. Corbisiero 2010

37. . Is the East or West side of the island steeper? __________________
. What is the highest elevation of the island? __________________
East
29 meters
K. Corbisiero 2010

38. . What is the lowest elevation of the depression? _______
. What is the index line interval? __________________
1 meter
50 meters
K. Corbisiero 2010

39. = 20 m/km 9. Determine the gradient between points B and C.
G = change in field
distance
= 50 m – 10 m
2 km
= 20 m/km
K. Corbisiero 2010

40. The End