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Understanding and Using Maps

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To locate a specific point on Earth we need a more detailed map. So, how can we use latitude and longitude ... Reading Maps Author: Connie ... Compass Map Legends Age ... – PowerPoint PPT presentation

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Title: Understanding and Using Maps


1
Understanding and Using Maps
2
'DoNow'
  1. Identify the continents or oceans indicated by
    the letters A I.

3
Latitude and Longitude
  • The earth is divided into lots of lines called
    latitude and longitude.

4
Lines
  • Longitude lines run north and south.
  • Latitude lines run east and west.
  • The lines measure distances in degrees.

Latitude
Longitude
5
Where is 0 degree?
  • The equator is 0 degree latitude.
  • It is an imaginary belt that runs halfway point
    between the North Pole and the South Pole.

Equator
6
Where is 0 degree?
  • The prime meridian is 0 degrees longitude. This
    imaginary line runs through the United Kingdom,
    France, Spain, western Africa, and Antarctica.

Prime Meridian
7
Compass
  • A compass is a tool that helps the user know what
    direction one is headed.
  • On a map, a compass or a compass rose helps the
    user locate these directions.

8
Map Legends
  • The legend is the key to unlocking the secrets of
    a map. Objects or colors in the legend represent
    something on the map.

9
Age Expectancy
10
Can you understand this legend?
11
World Map
North Pole
Arctic Ocean
Europe
Asia
N.America
Atlantic Ocean
Pacific Ocean
Equator
Africa
S.America
Indian Ocean
Pacific Ocean
Australia
Prime Meridian
Southern Ocean
Antarctica
South Pole
12
The previous map was very simple. It only shows
generalized places. To locate a specific point
on Earth we need a more detailed map.
13
So, how can we use latitude and longitude values
to find locations on a map?
Flattening makes it easier!
14
'DoNow'
  1. What information is missing from the map above.?
  2. According to the map which are the developed
    countries?
  3. According to the map which are the developing
    countries?

15
Typical Graph
  • This is an example of a typical graph we are all
    familiar with.
  • This graph is made up of different points with
    lines that connect the points.

16
Typical Graph
  • Each point has two values
  • The X value that runs along thehorizontal X
    axis
  • The Y value that runs along thevertical Y
    axis

Y axis
X axis
17
Typical Graph
  • X value is always stated first
  • Followed by the Y value
  • The origin is the point where the 2 axes
    intersect with a value of (0,0)

Y
(3,8)
(9,5)
X
(0,0)
18
Typical Graph
  • A point can also have negative(-) values
  • Negative X values are to the left of the origin
    (0,0)
  • Negative Y values are below theorigin (0,0)

Y
(-X,Y)
(X,Y)
(0,0)
X
(X,-Y)
(-X,-Y)
19
East/West, North/South on The Earth
  • Let the X axis be the Equator.
  • Let the Y axis be the Prime Meridian(runs
    through Greenwich outside of London).
  • Lat/Long values are the 2 grid points bywhich
    you can locate any point on earth.

Y
X
20
East/West, North/South on The Earth
  • Let each of the four quarters then be designated
    by North or South and East or West.

N
E
W
S
21
East/West, North/South on The Earth
  • The N tells us were north of the Equator.
  • The S tells us were south of the Equator.
  • The E tells us that were east of the Prime
    Meridian.
  • The W tells us that were west of the Prime
    Meridian.

(N, W)
(N, E)
N
E
W
S
(S, W)
(S, E)
22
East/West, North/South on The Earth
  • That means all points in NorthAmerica will have
    a North latitude and a West longitude because it
    is North of the Equator and West of the Prime
    Meridian.

(N, W)
Prime Meridian
Equator
23
East West, North South on the Earth
Equator
?
  • What would be the latitude and longitude
    directions in Australia?
  • What would be the latitude and longitude
    directions in S.America?

Prime Meridian
?
24
What is Latitude?
  • Latitude is the distance from theequator along
    the Y axis.
  • All points along the equator have a value of 0
    degrees latitude.
  • North pole 90N
  • South pole 90S
  • Values are expressed in terms of degrees.

90N
Y
X
90S
0
25
What is Longitude?
  • Longitude is the distance from the prime meridian
    along the X axis.
  • All points along the prime meridian have a value
    of 0 degrees longitude.

90E
90W
Y
X
180W
180E
0
26
So Where is (0,0)?
  • The origin point (0,0) is where the equator
    intersects theprime meridian.
  • (0,0) is off the western coast of Africa in the
    Atlantic Ocean.

27
DoNowSee If You Can Tell In Which Quarter
These Long/Lats points Are Located
  • 1. 41N, 21E
  • 2. 37N, 76W
  • 3. 72S, 141W
  • 4. 7S, 23W
  • 5. 15N, 29E
  • 6. 34S, 151E

A
B
D
C
28
, 69 W
18 N
Where can you find Santo Domingo?
SD

M

Where can you find Madagascar?
20 S
, 47 E
29
90
60
30
0
30
60
90
180
180
90
45
45
135
135
90
0
30
DoNow
  • Qué línea se encuentra en 0 latitude?
  • Qué línea se encuentra en 0 longitude?
  • Como se llego a determinar el local para la
    línea en la pregunta 2?

31
DoNow
  • What kind of line is the equator?
  • Why you need a legend on a map?
  • What are the cardinal directions?
  • According to Question 3 are these the only
    directions that you can travel?

32
Sites to visit
  • Look up Latitude and Longitude for US Cities
  • Maps and Map Skills Degrees, Latitude,
    Longitude Worksheet
  • Latitude and Longitude Map (lesson plan)
  • Scale
  • Time Zones
  • Anchors Aweigh (a map adventure)
  • Map Quiz
  • Make Your Own Map
  • Topography Maps
  • U. S. Map Collection
  • GeoSpy Game
  • Globe Projector
  • GeoGame

33
Additional Sources
  • Atlas - World (Holt, Rinehart and Winston)
  • Outline Map of US
  • Map Packet Download
  • Maps.com
  • National Geographic Xpeditions
  • Maps Globes
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