FINDING YOUR WAY AROUND THE SEA

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    15-Feb-2016

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FINDING YOUR WAY AROUND THE SEA. By: Kirra , Sydney, Elizabeth, Zach, and Miranda. Latitude and Longitude. Used to help locate specific spot on the earths surface. Longitude: vertical Latitude: horizontal - PowerPoint PPT Presentation

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FINDING YOUR WAY AROUND THE SEA

FINDING YOUR WAY AROUND THE SEABy: Kirra, Sydney, Elizabeth, Zach, and Miranda.Latitude and LongitudeUsed to help locate specific spot on the earths surface.Longitude: verticalLatitude: horizontalEquator: a line perpendicular to the axis that divides the earth into the northern and southern hemisphere.

Other important parallelsTropical zone: The area of the earth that lies between the tropic of cancer and the tropic of capricorn.Meridians: Lines of longitude MeasurementsNautical mile: unit of distance used in navigation which is equal to one minute of latitude. (1.15 land miles)Maps and ChartsMaps and charts are 2D representations of the earths 3D surface.Maps usually show land surfaceCharts usually show ocean depths

ChartsBathymetric Charts: shows lines connecting points of similar depth.Physiographic Charts: uses drawings to show varying depths of the ocean.InstrumentsBy utilizing the North Star and an instrument called a sextant a seamen can find his location as long as he was in the Northern Hemisphere.Chronometer: a seagoing clock that could keep accurate time and to determine longitude

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