• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Chapter 6 Section 3 (maps)
 

Chapter 6 Section 3 (maps)

on

  • 3,420 views

Chapter 6: Views of Earth

Chapter 6: Views of Earth
Section 3: Mapping Earth

Statistics

Views

Total Views
3,420
Views on SlideShare
3,280
Embed Views
140

Actions

Likes
0
Downloads
7
Comments
0

2 Embeds 140

http://blendedschools.blackboard.com 135
http://www.blendedschools.blackboard.net 5

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • Presentation slide for courses, classes, lectures et al.

Chapter 6 Section 3 (maps) Chapter 6 Section 3 (maps) Presentation Transcript

  • Chapter 6: Views of EarthSection 3: Maps
    Mr. MotukGeneral Science
  • How are Maps Used?
    Maps are used to model the Earth’s Surface.
    Maps are made using projections.
    Making a map of the Earth is difficult because you are placing a round sphere on flat paper.
    All maps have some type of distortion.
    Either distorted shape or distorted area.
  • Types of Map Projections
    Mercator Projection
    Represents continental shapes correctly.
    Areas of distortion: Polar regions get stretched out.
    Forms a grid of parallel lines of latitude and longitude.
    Mainly used for navigation.
    Airplanes and Boats.
  • Robinson Projection:
    Accurate continental shapes and areas.
    Distorts Polar region only.
    Displays Earth as a flat top and bottom oval.
  • Conic Projection:
    Used to project maps of small areas.
    Mainly used for Roads and Weather maps.
    Produced by projecting latitude and longitude onto a cone.
    Distorts latitudinal lines. (They arc)
  • Topographic Maps
    Map showing detailed elevations for an area.
    Project height onto a flat page using contour lines.
    Contour lines: connect different areas of equal elevation.
    Contour interval: difference between contour lines.
    Index contours: lines marked with an elevation.
  • Using Contour Maps
    Contour lines never cross!!!!
    Contour lines close around hills, basins, or depressions.
    Contour lines form V’s that point upstream.
    A MAP LEGEND tells common symbols.
    A MAP SCALE tells ratios for determining distance.
  • TYPICAL MAP LEGEND
  • TOPOGRAPHIC MAP: HARRISBURG
  • Landsat Satellites
    Detect different wavelengths of energy reflected or emitted.
    Use mirrors with detectors to measure intensity.
    Produce digital image of surface features.
    Examples: Landsat Image from NASA
  • Topex Poseidon Satellites
    Topex= Topographical Experiment
    Uses RADAR to detect underwater ocean features.
    Develop maps of the ocean floor.
    Uses remote sensing under water.
    a. “Sea Beam” uses sonar to map the ocean floor.