1. Table of Contents Title: Chapter 2 - Mapping our World –Page #: 17 –Date: 9/19/2012

2. Objectective Students will be able to locate lines of latitude on a map. Students will be able to explain how lines of latitude are derived. Students will be able to convert degrees, minutes and seconds into kilometers.

3. Words of the Day Angle - A measure of rotation expressed in degrees, minutes and seconds. Degree (º)- A measure of rotation. There are 360º in a circle. Minute (’) - One sixtieth of a degree. Second (”) - One sixtieth of a minute.

4. Chapter 2 - Mapping Our World 2.1 Latitude and Longitude **Lines of Latitude and Longitude are used to locate places on Earth.** Latitude Map - A flat model of the earth. Cartography - Science of making maps.  Cartographers use a grid of parallel lines to locate exact point on Earth (coordinates.)

5. Chapter 2 - Mapping Our World 2.1 Latitude and Longitude Equator - Horizontal line that separates the earth in half. Latitude - Lines that are parallel to the equator. (“Flatitude”) Measures distance in degrees away from the equator which is at 0º Latitude. North Pole = 90º North Latitude (above the equator.) South Pole = 90º South Latitude (below the equator.)

6. Chapter 2 - Mapping Our World 2.1 Latitude and Longitude Northern Hemisphere Southern Hemisphere Equator (0º Latitude) 90º South Latitude 90º North Latitude

7. Chapter 2 - Mapping Our World 2.1 Latitude and Longitude Where do degrees of Latitude come from? Earth is a sphere. The equator is the X-axis. Put sphere on an axis and measure the angle in degrees away from the origin O. O 45º North Latitude 45º South Latitude - 45º angle + 45º angle

8. Chapter 2 - Mapping Our World 2.1 Latitude and Longitude Degrees are divided into smaller units called “minutes.” ( ’ ) Minutes are divided into smaller units called “seconds.” ( ” ) Earth’s circumference = 40,000km. 1 Degree = 40,000km / 360º = 111km. 1 Minute = 1 degree / 60 = 111km / 60 = 1.85km. 1 Second = 1 minute / 60 = 1.85km / 60 = 0.031km.

9. Classwork Read Daring Travelers complete questions.