Table of Contents Title: Type of Maps Page #: 18 Date: 9/25/2012

Objective Students will be able to compare and contrast different kinds of maps. Students will be able to explain why different maps are used for different purposes.

Word of the Day Parallel - Lines that extend in the same direction without ever intersecting.

2.2 Types of Maps Mercator Projection Conic Projection Gnomonic Projection

2.2 Types of Maps Maps - Flat projections. There are many forms: Mercator Projection - A map that has parallel lines of latitude and longitude. BUT!! Lines of longitude are not parallel in real life. They are semicircles. Result is that images of landmass are highly distorted. Land masses near the North and South Poles are highly distorted. They appear much bigger than they are in real life. Shapes of landmasses are correct. Mercator Projections are good for direction - used in navigation.

2.2 Types of Maps Conic Projection - Made by projecting points and lines from a globe onto a cone. The cone touches the globe at a few lines of latitude. Good for mapping small areas, but distorts landmasses where the cone does not touch the globe - The top and bottom of the map. Often used to make road maps.

2.2 Types of Maps Gnomonic Projections - Made by projecting point and line from a globe onto a piece of paper that touches the globe at a single point. There is no distortion at that single point. There is a lot of distortion of landmasses and direction at all other points. Used for navigation, because they show straight lines accurately.

Classwork Page 40, Questions 1 through 4