Latitude and Longitude Navigation – Flashcards
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1- Identify and describe lines of Latitude and Longitude: how they run? - AKA? - divide the earth? - how they are measured? - reference lines? - longest of all latitude lines? - identify location on map? - lines that represent tropic of cancer and tropic of Capricorn
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-Latitude runs horizontally east to west (parallel) while longitude runs vertically north to south (meridians) -These are divided into hemispheres -They are measured in degrees -Reference lines for longitude and latitude are the equator and the prime meridian -The longest line of latitude is the equator. - Tropic of Cancer- 23.5 north -Tropic of Capricorn- 23.5 south
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What is a topographic map? - what does it show? - AKA? - What do contour lines represent? - list rules for contour lines - What are contour intervals?
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-A topographic map uses a series of lines to represents the shape of a geological surface ex. (Hill/ Mountain) - it shows a contour line - contour lines represent the exact elevation of the lands shape - intervals are the difference in elevation between each line
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3- What is a sextant? Describe its use.
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-it is a tool used to calculate latitude using the angle of the North Star, referencing the horizon.
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4- What is a chronometer? Describe its use. Who invented it? How many trials?
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-To calculate longitude -a clock that could keep precise time - John Harrison - He experimented with 4 trials
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5- What is GPS? Describe its use.
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-Global Positioning System -uses satellites to pin point any where on earth at any time.
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6- What are time zones? How are they measured?
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-time zones are broad strips of 15 degree intervals
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7- Know how many time zones US has and name them.
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- Eastern, central, mountain, and Pacific -Four
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8- Know direction earth travels/rotates and what solar time is based on?
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Earth rotates from east to west/ solar time is based on positioning of the sun
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Know how many degrees per hour the earth spins? And how many time zones the world has?
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The earth spins 15 degrees per hour, 24 time zones, each 15 degrees apart
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10- What is the starting point for time zones?
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Greenwich, England is the starting point for these time zones.
