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Published byAudra Dickerson Modified over 9 years ago
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Two measurements are used to describe locations around the world. Two measurements are used to describe locations around the world. Latitude: distance north or south of the equator Latitude: distance north or south of the equator Longitude: distance east or west of the prime meridian Longitude: distance east or west of the prime meridian
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Just like a circle the earth has 360 degrees Just like a circle the earth has 360 degrees Lines of latitude are east-west lines around the globe Lines of latitude are east-west lines around the globe Lines of longitude are north-south lines around the globe Lines of longitude are north-south lines around the globe The equator and prime meridian are 0° The equator and prime meridian are 0° Expressed as degrees east or west & north or south Expressed as degrees east or west & north or south Pair share: what is the latitude and longitude of the X? x
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Maps distort the earth: making some areas too big or small 4 types of map shapes / styles of maps for different purposes
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Developed in 1569 to help sailors travel the globe Distorts the size and shape Distorts the size and shape Accurate directions Accurate directions Mercator Map Pair share: what do you notice about the grid boxes in this map?
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Shows distance, size and shape accurately Distortions around the edges Distortions around the edges Robinson Projection Map
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Used for road and weather map accurate over a small area accurate over a small area Distorted over a larger area Distorted over a larger area Conic Projection Map
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Made by placing a piece of paper on a single point on the globe’s surface Distance and direction are distorted, but used by sailors over short distances. Distance and direction are distorted, but used by sailors over short distances. Gnomonic Projection Maps
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1. How many degrees are used to measure the Earth? 2. What 2 places are zero degrees on the globe? 3. Name 2 problems with making accurate maps?
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