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Chapter 3, Section 2 Standards IE 1h. Read and Interpret maps. Objective 1Describe the characteristics and uses of three types of map projections. Objective 2Summarize how to use keys, legends, and scales to read maps. AssessmentEnd of Section Questions, Chapter Test ReviewDaily Bellwork, Science Starters, Standards Practice
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Key Terms Create a flash card for the following key terms (p. 57 in textbook): Remote Sensing Map Projection Legend Scale If you finish early, study your flash cards!
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Maps The Science of making maps is called Cartography.
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Maps To make maps Cartographers collect data using: – Field Surveys (actually walking and drawing an area) – Remote Sensing (using satellite images, airplanes)
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Map Projections A map is a flat representation of Earth’s curved surface. To transfer the info on a spherical globe to a 2D map scientists make PROJECTIONS. 3 Types of Map Projections CylindricalAzimuthalConic
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Cylindrical Projections Imagine the globe was transparent and had a light inside… If you wrapped a cylinder (rectangular) paper around it and traced the continents = Cylindrical Projection Map
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Azimuthal Projections Imagine the globe was transparent and had a light inside… If you placed a paper so that it touches the globe at only one point and then trace = Azimuthal Projection Map.
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Conic Projections Imagine the globe was transparent and had a light inside… If you placed a paper in a cone shape over the top or bottom of the globe and traced the images= Conic Projection Map.
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Cylindrical Accurate near equator Parallels and Meridians form a grid Shapes of small areas are accurate Distorts near poles Azimuthal Little distortion at point of contact Great Circles appear as straight lines (good for pilots) Unequal spacing between parallels and meridians Distances are inaccurate Conic Areas where the cone and globe are in contact are accurate A series of conic projections can increase accuracy Areas where the cone is not touching the globe are distorted Benefits Negatives
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Quick Check! 1.3 Types of Map projections are Cylindrical, Azimuthal, and __________. 2.Which map forms a grid and makes finding locations easier? ________________ 3.Which projection is accurate at only one point but makes navigation for pilots easy? ________________ 4.Why is the globe the only completely accurate map? ________________________________________ ________________________________________
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Map A-Peel Activity
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Reading a Map Compass Rose==shows the cardinal directions, North, East, South, West (generally North points upward. Note an actual compass points to Geomagnetic North) Parallels are side-to-side Meridians are top to bottom Use legend and scale to interpret symbols and distance on a map
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INTERACTIVE! Draw a quick map of where you live and the surrounding neighborhood. It does not need to be perfect! Don’t worry if you do not know all the street names. Don’t forge a compass rose and a legend!
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Animated Maps
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Brain Pop Maps
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Assessment Answer Questions 2,3,4,6 on page 62.
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Daily Quiz
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