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Science 3.1 and 3.2
notes
| Question | Answer |
|---|---|
| are reference points in the earth's surface | North and South poles |
| divides the Earth into North and South hemispheres | equator |
| lines that run East and West parallel to the Equator | parallels |
| the angular distance North or South of the equator | latitude |
| each degree of latitude is _ miles and _ km | 111 m. 66.6 km |
| minute sign | ' |
| minute equals _ km | 1.85 |
| minute equals _ mi. | 1.11 |
| sign for seconds | '' |
| 51 seconds of latitude is _ | 38 degrees, 53'51''N |
| lines that run from pole to pole | meridian |
| angular distance between East and West of the Prime Meridian | longitude |
| between the longitudes and the equator= _ km | 111 |
| between the poles and the equator, there are_km or miles | 20km or 12 miles |
| any line that circles the Earth and divides the earth into halfs; used in navigation | The Great Circle |
| has an exact match - creates great circles | lines of longitude |
| piece of a circle | arch |
| nautical mile= | 1 minute of latitude or longitude |
| Nautical miles apply to the _. Why? | air or seas- fluids |
| Statute mile = | land mile |
| liquid or a gas | fluid |
| _ nautical miles between each | 69 |
| difference between nautical miles and statute mile | obstacle and curves up and down- statutestraight- nautical |
| very fast spur of air | jet stream |
| points on the earth surface that a compass needle points to located at the tilted axis | geometric poles |
| straight up and down | geograohic north pole(true north) |
| Earths geographic poles are on the ____. | axis |
| Earths magnetic poles are on the _____. | points on the Earth's surface where magnetic fields are strongest |
| the angle between the direction of the geographic pole and the direction in which the compass needle points | magnetic declination |
| nautical mile = | 1 minute of an arc or a meridian or 6076 feet |
| each degree of latitude = | 111 km or 69 miles |
| unit of speed that is = to one nautical m/h | knot |
| knot = | 1.51 mph |
| a vessel traveling one knot along the meridian travels ____ of geographical latitude in 1 hour | 1 minute |
| statute mile= _ feet | 5280 |
| metric mile = | 1500 meters |
| a flat map that represents the 3D curved surface on a globe | map projection |
| to throw out or cast forward such as a light on a screen | project |
| name the three most common map projections | Mercator,Gnomonic,Conic |
| distortions are always present when a __ object is projected onto a __ surface | round; flat |
| Mercator projection = | cyndrilical |
| How mercator projection is made- | wrap a cylinder of paper around a lighted globe |
| the distortion for a mercator projection | areas near the poles have the greatest distance,because meridians appear a straight lines |
| the advantage of a mercator projection- | all compass directions are straight |
| How Gnomic is made- | a sheet of paper touching a lighted globe at one point |
| distortions of a Gnomic projection- | point that paper touches is very accurate; everything else is distorted |
| advantages of a Gnomic projection- | used in navigation when plotting Great Circles- especially plotting North Pole |
| How Conic projections are made- | paper cone placed over a lighted globe at a particular location |
| disortions of a Conic projection | get 1 particular location and everything else is distorted |
| advantages of a Conic projection | get a clear and up close view of a particular location |
| legend = | map key |
Created by:
surfergurl
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