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Types of Maps

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Social Studies What is a map? A map is a graphic representation of a portion of the earth's surface drawn to scale, as seen from above. What maps have you used? – PowerPoint PPT presentation

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Title: Types of Maps


1
Types of Maps Map projections,
  • Social Studies

2
Purpose of Maps
  • What is a map?
  • A map is a graphic representation of a portion of
    the earth's surface drawn to scale, as seen from
    above.
  • What maps have you used?

3
Types of Maps
  • Physical map
  • Map that shows how the land looks.
  • Relief map
  • Map that shows the height of land above sea
    level.
  • Political map
  • Map that shows how humans have divided the
    surface of the Earth.
  • Special Purpose map
  • Map that gives one particular kind of information.

4
Physical Map
  • Shows how the land looks
  • Give some examples of things a physical map might
    show.
  • Mountains
  • Rivers
  • Plains
  • Lakes
  • Other physical features of the land.

5
Physical Map
6
Relief Map
  • Map that shows the height of land above sea level.

7
Political Map
  • Map that shows how humans have divided the
    surface of the Earth.
  • Divided into countries, states, etc
  • Displays some physical features since those are
    often used as boundaries.

8
Political Map
9
Special Purpose Map
  • A map that gives one particular kind of
    information.
  • Rainfall maps, population density maps, Zip Code
    map, interstate/highway map, etc

10
Light Density Map of Earth
11
Population Density Map
12
More About Maps
  • Maps are usually a combination of physical,
    political, and special purpose.
  • Example
  • A map may show the products produced in each
    state within the United States along with major
    rivers.
  • What types of maps are represented in the
    examples below?

13
Carbon Emission Map What map type of map would
this be?
14
Map Projections
  • A map projection is a way to show the rounded
    Earth on a flat piece of paper.
  • Maps show four things
  • Direction
  • Distance
  • Shape
  • Size
  • Globes can show all four accurately but maps
    cannot.
  • To get one thing accurate, we must give up
    another.

15
Map Projections
  • Map projection
  • A way of showing the earth on a piece of paper.
  • Conic projection
  • Map projection used for showing small areas
    midway between the equator and the poles.
  • Gall-Peters projection
  • Map projection that shows the sizes of the
    landmasses correctly.
  • Mercator projection
  • Map projection that shows true directions and
    land shapes but exaggerates size of landmasses.

16
Mercator Projection
  • Shows how the Earth would look if a piece of
    paper were wrapped to form a tube around the
    globe.
  • The distances are not true. The sizes of the
    landmasses near the North and South poles are
    greatly exaggerated.

17
Mercator Projection
  • Compare the sizes of South America and Greenland
    on a Mercator map.
  • South America is actually nine times larger than
    Greenland.

18
Gall-Peters Projection
  • Map projection that shows the sizes of the
    landmasses correctly.
  • However, shapes and distances are not accurate.

19
Gall-Peters Projection
20
Conic Projections
  • Map projection used for showing small areas
    midway between the equator and the poles. Size,
    distance, and direction are fairly accurate.
  • It comes from the idea of placing a cone over
    part of a globe.

21
Conic Projections
22
Robinson Projection Most widely used and shows
only minor distortions in true size, distance,
and shape of landmasses
23
More About Map Projections
  • There are a number of other kinds of projections
    which show the sizes and shapes of landmasses
    fairly accurately.
  • Remember that no map can show direction,
    distance, shape, and size at the same time as
    accurately as a globe.
  • Every kind of map has a special use, but none is
    perfect.
  • Be careful about making judgments about the world
    based on maps since shape, size, or distance may
    be inaccurate.
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