Direction and Bearings
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There are eight cardinal directions that can be expanded to include intermediate directions like southeast and northwest. Occasionally sixteen directions are used, or bearings measured in degrees from 0 to 360 can specify an exact direction. Magnetic compasses and protractors are tools used to determine directions and calculate bearings, although GPS is more commonly used today.
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Compass & Bearings
1) A compass is used to determine bearings to navigate from one point to another. The direction of travel arrow points towards the destination and the red end of the needle points to north.
2) To find a bearing on a map, place the compass on the map with the direction of travel arrow pointing towards the destination. Rotate the dial until the orienting lines align with the map gridlines and north is at the top. The bearing is read at the index line.
3) Declination is the difference between true north and magnetic north and must be accounted for when converting between map bearings and compass bearings. The rules are "Map to compass, dump it. Compass to map, add it back
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This document provides information about topographic maps, including:
1. Topographic maps show elevation, shape of the earth's surface using contour lines connecting points of equal elevation. Features like water, terrain, and human structures are shown through different colors and patterns.
2. Contour lines indicate elevation changes - closely spaced lines show steep slopes, widely spaced show gentle slopes. Contour lines never cross or branch. When crossing streams, they bend upstream. Closed contours indicate hills and depressions.
3. Topographic profiles show elevation changes along a line, often with vertical exaggeration to emphasize details. Gradient is the steepness of a slope. Constructing profiles involves connecting elevation points along a contour line slice
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This Presentation is to made concepts about measuring the earth (to locate position of any person on the whole earth). For this purpose we re going step by step basis in this presentation.These steps are mentioned as contents. After that you may able to learn about measuring a person's position of earth. Thank you!
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Topographic maps presentation_mine
Topographic maps use contour lines to represent elevation and slope of land. Contour lines connect points of equal elevation and never cross. Closer lines indicate steeper slopes while widely spaced lines show more gentle slopes. Index contours are bold lines labeled with the elevation. A benchmark is a point of known exact elevation marked as B.M. on maps. Map scale relates distances on a map to actual distances on land and can be ratio, graphical, or verbal.
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Compass & Bearings
1) A compass is used to determine bearings to navigate from one point to another. The direction of travel arrow points towards the destination and the red end of the needle points to north.
2) To find a bearing on a map, place the compass on the map with the direction of travel arrow pointing towards the destination. Rotate the dial until the orienting lines align with the map gridlines and north is at the top. The bearing is read at the index line.
3) Declination is the difference between true north and magnetic north and must be accounted for when converting between map bearings and compass bearings. The rules are "Map to compass, dump it. Compass to map, add it back
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3) New France grew slowly due to its system of seigneurial land grants and the Company of One Hundred Associates' focus on the fur trade over settlement.
4) France lost New France after its defeat in the Seven Years' War, ceding the territory to Britain in the 1763 Treaty of Paris.
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Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
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Direction and Bearings
- 1. Directions and Bearings Created by tbonnar.
- 2. Directions and Bearings • There are eight major directions that we commonly use. The first four are called the cardinal directions.
- 3. Directions and Bearings • Sometimes, another four directions are added. So there are directions like Southeast (SE) and Northwest (NW)
- 4. Directions and Bearings • Occasionally, sixteen directions are used. Example WSW = Westsouthwest
- 5. Directions and Bearings • With more than sixteen directions, things get quite confusing, so we use numbers called bearings.
- 6. Directions and Bearings • There are 360° of bearings. If we use decimals, there are even more (∞ in fact). We commonly use only 360 though.
- 7. Directions and Bearings • All of these bearings and directions appear on magnetic compasses, which are used to figure out directions and calculate exact bearings. Today of course, many people use GPS systems instead of “old-fashioned” compasses.
- 8. Directions and Bearings • A simple protractor can be used to calculate bearings on a diagram or map.