physical geography maps l.
Download
Skip this Video
Download Presentation
PHYSICAL GEOGRAPHY Maps

Loading in 2 Seconds...

play fullscreen
1 / 69

PHYSICAL GEOGRAPHY Maps - PowerPoint PPT Presentation


  • 102 Views
  • Uploaded on

PHYSICAL GEOGRAPHY Maps. Chapter 2 C.J. Cox. Chapter 2 Concepts. Key properties of maps Great Circles Map Projections Scale Latitude & Distance Longitude & Time Magnetic North Township & Range ( Survey System) Contour Maps Remote Sensing. Key Terms.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'PHYSICAL GEOGRAPHY Maps' - ulani


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
physical geography maps

PHYSICAL GEOGRAPHYMaps

Chapter 2

C.J. Cox

chapter 2 concepts
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
key terms
Key Terms
  • Map: a flat representation of a globe
  • Cartography - the art and science of mapmaking
chapter 2 concepts6
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
4 key properties of maps
4 KEY PROPERTIES OF MAPS

Shape

Area (size)

Distance

Direction

key terms8
Key Terms
  • Conformal Map - shows correct shape
  • Equal Area Map - shows correct area
  • Rhumb Line - line shows correct direction
  • Great Circle - the largest circle that can be drawn on a globe. This circle divides the globe into two halves and is the shortest distance between any two points.
chapter 2 concepts9
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
key terms10
Key Terms
  • Great Circle - the largest circle that can be drawn on a globe. This circle divides the globe into two halves and is the shortest distance between any two points.
key terms14
Key Terms
  • Rhumb Line - line shows correct direction
chapter 2 concepts15
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
map projections
Map Projections
  • Projection: The system used to transfer locations from Earth’s surface to a flat map.
    • A projection of an image onto another surface
      • either a cylinder, a flat plane or a cone
    • 3 basic types of projections
        • cylindrical projection
        • planular projection (also known as azimuthal)
        • conical projection
slide18

CYLINDRICAL PROJECTION

used by navigators to show direction

Meridians run north & south

Parallels run east & west

slide19

Cylindrical Maps

are conformal maps

they conform to the correct shape

slide21

CONICAL PROJECTION

used for Mid-Latitude Maps

True Area (between the standard parallels)

Also referred to as equal area maps

slide23

PLANULAR PROJECTION

used by pilots

Shows Great Circle Routes

slide25

ROBINSON PROJECTION

Compromise projection

chapter 2 concepts27
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range (Survey System)
  • Contour Maps
  • Remote Sensing
scale
SCALE
  • Scale: the relationship between units on the map and actual distance on the ground
  • Written Scale: one inch equals one mile
  • Linear Scale: |---------|---------|----------|
    • or Graphic Scale
  • Representative Fraction: 1:63,360
chapter 2 concepts30
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
latitude distance
Latitude & Distance
  • Earth’s Circumference 24,840 miles
  • 24,840 divided by 360 degrees of a circle
  • One degree equals 69 miles
  • One degree can be divided into 60 parts or minutes
  • 69 miles divided by 60 equals 1.15 miles
  • Therefore one minute equals 1.15 miles
  • One minute is a nautical mile (1.15 miles)
latitude distance32
Latitude & Distance
  • One minute can be further divided into 60 seconds
  • One minute or 1.15 miles divided by 60 equals 102 feet
  • Therefore one second equals 102 feet
  • WHAT IS THE DISTANCE SHOWN ON A 15 MINUTE MAP?
chapter 2 concepts33
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
chapter 2 concepts35
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
magnetic north
Magnetic North
  • The earth holds a mass of liquid, fluid mass of iron around the solid inner core
  • This generates a powerful magnetic field within the earth that is generated into outer space
slide37

True North = Geographic North

or North Pole

Magnetic North = where

the compass points to

76N 102 W

slide39

Declination - the difference

between magnetic and

geographic north

17 E

terms
Terms
  • Isogons - lines connecting points of equal magnetic variation away from the geographic north
  • Agonic Line - points along a line where there is no magnet variation or declination from the geographic north
chapter 2 concepts43
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
township range public land survey system
Township & RangePublic Land Survey System
  • A rectangular grid system adjusted to the geographic grid
  • East west lines are surveyed and coincide with parallels of latitude
    • prominent parallel is known as the base line
  • Vertical divisions are called ranges
    • prominent meridians are called principal meridians
chapter 2 concepts49
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
contour maps
Contour Maps
  • Maps showing lines that indicate locations of equal elevations
chapter 2 concepts55
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
remote sensing mechanical collection remotely
Remote SensingMechanical collection remotely
  • Photographic Remote Sensing
    • camera - visible light energy
    • infrared - film sensitive to the red end of the light spectrum
        • (crop and plant diseases)
remote sensing mechanical collection remotely57
Remote SensingMechanical collection remotely
  • Non-Photographic Remote Sensing
    • radar - radio detection and ranging
      • energy transmitted & return signal becomes the basis for the image produced
        • penetrates darkness
        • terrain mapping
    • thermal infrared
      • records heat radiation emitted by clouds, water and land
remote sensing mechanical collection remotely58
Remote SensingMechanical collection remotely
  • Non-Photographic Remote Sensing (cont)
    • multispectral scanning
    • sonar - sound navigation and ranging
      • undersea topography
geography
GEOGRAPHY
  • Location
  • Maps & Globes
  • Remote Sensing
chapter 2 concepts68
Chapter 2 Concepts
  • Key properties of maps
  • Great Circles
  • Map Projections
  • Scale
  • Latitude & Distance
  • Longitude & Time
  • Magnetic North
  • Township & Range ( Survey System)
  • Contour Maps
  • Remote Sensing
physical geography maps69

PHYSICAL GEOGRAPHYMaps

Chapter 2

C.J. Cox