PPT-A common misconception about lines of latitude is that they were simply defined as the

10 20 30 40 50 60 70 80 90 10 20 30 40 50 60 70 80 90 A common misconception about lines of latitude is that they were simply defined as the intersection of different angles with the surface of the Earth as measured relative to the equator. LATITUDE & LONGITUDE. There are three very important lines to help us find our way around the world. . 1. The . Equator. The . equator . is measured at 0° latitude. . It is an imaginary line that runs around the Earth halfway between the poles. This Line divides the Earth into the Northern and Southern Hemispheres.. Consider the 3 planes given by the following equations:. x + 2y + z = 14 .  . . . 2x + 2y – z = 10 .  . History. Use of grid lines . originated from. about 300 B.C.E by Greek . astronomers . Hipparcus. and . Ptolemy. Used spherical trigonometry observations using sun, moon, and stars to plot points on a spherical earth. 2. Grid System. Lines of latitude and longitude cover the entire Earth, allowing us to find any location.. The . cardinal directions. are North, South, East and West.. Lines of Latitude run East to West. Chapter 2. Section 2.1. Latitude and Longitude. Cartography is the science of mapmaking, where cartographers use an imaginary grid of parallel lines and vertical lines to locate exact points on Earth.. Globe Skill Review. What is the invisible line at 0. ° latitude called?. The equator is the invisible line at . 0. ° latitude.. The equator is the “belt” of the earth.. What kind of lines show how far a place is away from the equator?. Hemispheres. A place can be either in the NORTHERN or SOUTHERN hemisphere. That means it is in one of the halves above or below the imaginary east-west line known as the EQUATOR.. A place can also be in either the WESTERN or EASTERN hemisphere. That means it is in one of the halves on either side of the imaginary north-south line known as the PRIME MERIDIAN.. . Undefined Terms. Point: exact location; has no size; . . represented by a dot.. Line: set of points extending in both directions containing . . the shortest path between 2 points. ; one dimensional. Do Now. : Why do you think we call the equator the equator?. HW: Latitude/Longitude practice . ws. . . 4 Hemispheres. The equator splits apart the Northern and Southern Hemisphere. The Prime Meridian and International Date Line split the Eastern and Western. Wait to be called for lockers . Blue Slips/Permission Slips. Kickstart. . Take out the map you created for . Ariannie. Take out color pencils . Answer the following question in your notebook: . How are the written instructions different from the map?. . 3. Copy the following definitions:. Geography. - the study of the Earth, people, places and environments.. Map Legend- . gives symbols to represent places on a map. Map Scale- . compares distance on a map to actual distance on the Earth.. Taking the bite out of map reading The World of Geography! Our World Geography is the study of Earth’s Physical Properties An important tool used to study geography is a Map! A Globe is helpful and informative too How do you know whether it is or isn’t?. Who made the first map? Or globe?. What do maps show us? . Earth’s surface, political borders, population, geography, . ect. . . Geography. Latitude and Longitude. After . Unit . 4 you should be able to:. Accurately write coordinates. Use a map containing latitude and longitude. Determine latitude using the altitude of Polaris. Determine differences in time zones.