Presentation on theme: "Gr. 8 Social Sciences Term 1"— Presentation transcript:
1Gr. 8 Social Sciences Term 1 Topic 1: Maps and Globes
2Chapter 1: Maps and Atlases Unit 1: Latitude and longitude – degrees, minutes and seconds.
3Latitude Source: CAPS Platinum Social Lines of latitude are called parallel arcs. (not circles)The most important latitude line (0° latitude)is called the EQUATOR.Each line of latitude has a value in degrees. The angle of each line is measured from an imaginary point in the centre of the earth.Lines of latitude liesNORTH or SOUTH ofthe Equator.South Africa lies SOUTHof the EQUATOR.Source: CAPS Platinum SocialSciences Learner’s book Gr. 8 p. 4
4Longitude Source: CAPS Platinum Social Sciences Lines of longitude pass through both the north and south poles. They are not parallel linesLines of longitude are sometimes called meridians.The Greenwich Meridian, also known as the prime meridian is the most importantlongitude line (0° longitude).This is the meridian from where theworld time zones are calculated.Line of longitude liesEAST or WEST of theGreenwich Meridian.South Africa lies EAST of the GREEN-WICH/PRIME MERIDIAN.Source: CAPS Platinum Social SciencesLearner’s book Gr. 8 p. 4
5Degrees, minutes and seconds Lines of latitude and longitude on maps and globes make it easier to find places.Each line of latitude and longitude has a value in degrees.1° (degree) can be divided into 60' (minutes) and 1' can be divided into 60“ (seconds).When we combine latitude and longitude we get COORDINATESSource: CAPS Platinum Social SciencesLearner’s book Gr. 8 p. 5
6Unit 2: Using the atlas index to find places on a map Platinum Social Science Learner’s book Gr. 8 p. 6-7Complete Activity 2.
7Unit 3: Kinds of scale in an atlas There are three main scales of maps in an atlas:World scale – Maps of the world, maps of continentsLocal scale – Maps of provinces, maps of one countryRegional scale – parts of a continent , e.g. Southern AfricaSource: CAPS Platinum Social Sciences Learner’s Book Gr. 8 p. 8
8Unit 4: Scales Word Scale: Line scale: Ratio scale: One centimeter on the map represents 50 kilometers on the ground.Line scale:Ratio scale:1 :Source: CAPS Platinum Social SciencesLearner’s book Gr. 8 p. 10