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Chapter 3 Locating Places  and Telling time on Earth
Latitude  Longitude
Longitude <ul><li>Lines of longitude, or meridians , circle the earth from north to south. These lines divide the earth in...
Latitude <ul><li>Lines of latitude,  or parallels, circle the earth from east to west. These lines divide the earth into n...
Arctic Circle – 66.33 o Tropic of Cancer – 23.5 o EQUATOR – 0 0 Antarctic Circle – 66.3 o Tropic of Capricorn– 23.5 o NORT...
Locating Places <ul><li>Each latitude and longitude is  15 o  away from each other. </li></ul><ul><li>Latitude  = N or S <...
Give the Direction <ul><li>43  42  </li></ul><ul><li>60  45  30  15  0   </li></ul><ul><li>65  60 </li></ul><ul><li>45 </l...
1 degree =  60 minutes <ul><li>3  2  </li></ul><ul><li>60  45  30  15  0   </li></ul><ul><li>5  60 </li></ul><ul><li>45 </...
<ul><li>When writing a location's latitude and longitude, always list  latitude first! </li></ul><ul><li>50  15  30  45  5...
Determine the location of the point. <ul><li>15  16 </li></ul><ul><li>75 </li></ul><ul><li>74 </li></ul><ul><li>39  38 </l...
Plot the points. <ul><li>88 o 30’00” S, 133 o 15’00”E </li></ul><ul><li>133  134 </li></ul><ul><li>88 </li></ul><ul><li>89...
Determining Distance from a Point  Prime Meridian Equator Latitude – N or S Longitude – E or W
Determine the distance <ul><li>1. 88 o 30’00” S, 133 o 15’00”E </li></ul><ul><li>A. Equator (mi) =  </li></ul><ul><li>B. P...
<ul><li>3. 48o15’00”N, 162o45’00”E </li></ul><ul><li>A. Tropic of Cancer (mi)  </li></ul><ul><li>B. Arctic Circle (Km) </l...
Determining Distance  Prime Meridian Equator
Problem Solving <ul><li>Place Z is located at 60 0  north. How far in miles is place Z  </li></ul><ul><ul><li>1. to  the N...
Sidereal Days and Solar Days <ul><li>The  sidereal day  is defined to be the length of time for the vernal equinox to retu...
<ul><li>Because the Earth is in motion on its orbit around the Sun in the course of a day, the Earth must turn about 4 min...
Time Zone
Universal Time <ul><li>Like most other astronomical calculations, scientific predictions are usually presented in terms of...
International Date Line <ul><li>The  International Date Line  is an irregular line drawn on the map of the Pacific Ocean, ...
<ul><li>The conversion from UT to local time in US is as follows:  </li></ul><ul><li>Atlantic Standard Time 60 º   (AST ) ...
Time Zone Chart
Problem 1 <ul><li>The local time at 75 0  W is 10 hrs, Calc the time at </li></ul><ul><ul><li>A. 0  = </li></ul></ul><ul><...
Problem 2 <ul><li>The local time at 105 0  E is 12 hrs and 25 min, Sept 19,2006. Determine the time and date on the follow...
Problem 3 <ul><li>The local time at 45 0  W is 16 hrs and 5 min, Sept 22,2006. Determine the time and date on the followin...
PROBLEM 4 <ul><li>The last Islamic terrorist action on American soil was the bombing of WTC last 9-11-2001.   If the attac...
Problem 5 <ul><li>The Shoemaker Levy 9 comet hits Jupiter last July 16, 1994. If the delayed telecast will be shown nation...
<ul><li>A total  solar eclipse will occur on Dec 24 at 1530 hrs GMT in the southern part of the earth.  </li></ul><ul><li>...
<ul><li>The local time at 80 0 15’00”S & 60 0 30’00”W is 10 hrs, Sept 25, find the time and date at on the ffg. Places. </...
<ul><li>The local time at 68 o 45”00’N, 23 o 15’00’ E is 21:15hrs. Sept 27, 2006. </li></ul><ul><li>A. Calculate the time ...
Problem 9
<ul><li>END   OF   PRESENTATION </li></ul><ul><li>NEXT   MEETING   EXAM! </li></ul>
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  1. 1. Chapter 3 Locating Places and Telling time on Earth
  2. 2. Latitude Longitude
  3. 3. Longitude <ul><li>Lines of longitude, or meridians , circle the earth from north to south. These lines divide the earth into east and west sections. </li></ul><ul><li>The prime meridian is a line of longitude. It divides the earth into east and west hemispheres (halves). The prime meridian has a longitude of 0 0 It passes through Greenwich, England . </li></ul><ul><li>Lines of longitude are numbered from 0 to 180 degrees east or west . A location is referenced as east or west relative to the prime meridian. </li></ul>
  4. 4. Latitude <ul><li>Lines of latitude, or parallels, circle the earth from east to west. These lines divide the earth into north and south sections. </li></ul><ul><li>The equator is a line of latitude. It divides the earth into north and south hemispheres (halves). The equator has a latitude of 0 o .  </li></ul><ul><li>Lines of latitude are numbered from 0 to 90 degrees north or south. </li></ul><ul><li>A location is referenced as north or south relative to the equator. </li></ul>
  5. 5. Arctic Circle – 66.33 o Tropic of Cancer – 23.5 o EQUATOR – 0 0 Antarctic Circle – 66.3 o Tropic of Capricorn– 23.5 o NORTH SOUTH
  6. 6. Locating Places <ul><li>Each latitude and longitude is 15 o away from each other. </li></ul><ul><li>Latitude = N or S </li></ul><ul><li>Longitude = E or W </li></ul><ul><li>1 o = 70 miles </li></ul><ul><li>= 112 km </li></ul><ul><li>= 60 min </li></ul><ul><li>When writing a location's latitude and longitude, always list latitude first! </li></ul><ul><li>N </li></ul><ul><li>60 45 30 15 0 15 30 45 60 </li></ul><ul><li>60 </li></ul><ul><li>45 </li></ul><ul><li>30 </li></ul><ul><li>15 </li></ul><ul><li>0 W E </li></ul><ul><li>15 </li></ul><ul><li>30 </li></ul><ul><li>45 </li></ul><ul><li>60 </li></ul><ul><li>S </li></ul>60 0 N,30 0 E 45 0 N,30 0 W 30 0 S,45 0 E 30 0 N,15 0 E 30 0 S,0 Long 0 Lat,45 0 W 60 0 S,45 0 W
  7. 7. Give the Direction <ul><li>43 42 </li></ul><ul><li>60 45 30 15 0 </li></ul><ul><li>65 60 </li></ul><ul><li>45 </li></ul><ul><li>30 </li></ul><ul><li>15 </li></ul><ul><li>64 0 </li></ul><ul><li>122 123 </li></ul><ul><li>0 15 30 45 60 </li></ul><ul><li>51 0 </li></ul><ul><li>15 </li></ul><ul><li>30 </li></ul><ul><li>45 </li></ul><ul><li>52 60 </li></ul>SE NW 51 0 15’ S,122 0 30’ E 64 0 30’ N,42 0 15’ W
  8. 8. 1 degree = 60 minutes <ul><li>3 2 </li></ul><ul><li>60 45 30 15 0 </li></ul><ul><li>5 60 </li></ul><ul><li>45 </li></ul><ul><li>30 </li></ul><ul><li>15 </li></ul><ul><li>4 0 </li></ul><ul><li>1 2 </li></ul><ul><li>0 15 30 45 60 </li></ul><ul><li>3 0 </li></ul><ul><li>15 </li></ul><ul><li>30 </li></ul><ul><li>45 </li></ul><ul><li>4 60 </li></ul>4 0 15’ N,2 0 45’ W 3 0 15’ S,1 0 30’ E 4 0 45’ N,2 0 15’ W 3 0 45’ S,2 0 00’E
  9. 9. <ul><li>When writing a location's latitude and longitude, always list latitude first! </li></ul><ul><li>50 15 30 45 51 7 45 30 15 6 23 15 30 45 24 </li></ul><ul><li>12 8 45 </li></ul><ul><li>15 15 45 </li></ul><ul><li>30 30 30 </li></ul><ul><li>45 45 15 </li></ul><ul><li>13 9 44 </li></ul>12 0 15’ S,50 0 30’ E 8 0 30’ S,6 0 15’ W 44 0 15’ N,23 0 45’ E
  10. 10. Determine the location of the point. <ul><li>15 16 </li></ul><ul><li>75 </li></ul><ul><li>74 </li></ul><ul><li>39 38 </li></ul><ul><li>45 </li></ul><ul><li>46 </li></ul><ul><li>150 149 </li></ul><ul><li>52 </li></ul><ul><li>53 </li></ul><ul><li>79 78 </li></ul><ul><li>67 </li></ul><ul><li>66 </li></ul>74 0 45’ N,15 0 30’ E 52 0 15’ S,149 0 45’ W 45 0 15’ S,38 0 30’ W 66 0 15’ N,78 0 15’ W 15 30 45 15 30 45 45 30 15 45 30 15 45 30 15 45 30 15 15 30 45 15 30 45
  11. 11. Plot the points. <ul><li>88 o 30’00” S, 133 o 15’00”E </li></ul><ul><li>133 134 </li></ul><ul><li>88 </li></ul><ul><li>89 </li></ul><ul><li>55 o 45’00”N, 23 o 15’00”W </li></ul><ul><li>24 23 </li></ul><ul><li>56 </li></ul><ul><li>55 </li></ul><ul><li>48 o 15’00”N, 162 o 45’00”E </li></ul><ul><li>162 163 </li></ul><ul><li>49 </li></ul><ul><li>48 </li></ul><ul><li>61 o 15’00”S, 90 o 45’00”W </li></ul><ul><li>91 90 </li></ul><ul><li>61 </li></ul><ul><li>62 </li></ul>45 30 15 15 30 45 45 30 15 45 30 15
  12. 12. Determining Distance from a Point Prime Meridian Equator Latitude – N or S Longitude – E or W
  13. 13. Determine the distance <ul><li>1. 88 o 30’00” S, 133 o 15’00”E </li></ul><ul><li>A. Equator (mi) = </li></ul><ul><li>B. Prime Meridian (Km) = </li></ul><ul><li>C. Tropic of Cancer (mi) </li></ul><ul><li>D. 180 long </li></ul><ul><li>2. 55 o 45’00”N, 23 o 15’00”W </li></ul><ul><li>A. Equator (km) = </li></ul><ul><li>B. Prime Meridian (mi) </li></ul><ul><li>C. Tropic of Capricorn (km) </li></ul><ul><li>D. 46o45’E </li></ul>
  14. 14. <ul><li>3. 48o15’00”N, 162o45’00”E </li></ul><ul><li>A. Tropic of Cancer (mi) </li></ul><ul><li>B. Arctic Circle (Km) </li></ul><ul><li>C. Antarctic circle (mi) </li></ul><ul><li>D. Equator Mi </li></ul><ul><li>E. Tropic of Capricorn </li></ul><ul><li>4. 61o15’00”S, 90o45’00”W </li></ul><ul><li>A. Tropic of Capricorn (km) = </li></ul><ul><li>B. Antarctic circle (mi) = </li></ul><ul><li>C. Arctic Circle = (mi) </li></ul><ul><li>D. 123o15’W </li></ul><ul><li>E. 45o45’E </li></ul>
  15. 15. Determining Distance Prime Meridian Equator
  16. 16. Problem Solving <ul><li>Place Z is located at 60 0 north. How far in miles is place Z </li></ul><ul><ul><li>1. to the North Pole? </li></ul></ul><ul><ul><li>2. from the Tropic of Cancer? </li></ul></ul><ul><ul><li>3. to the Arctic Circle? </li></ul></ul><ul><li>Give the exact latitude or longitude of the following places: </li></ul><ul><li>1. 1,190 miles north of the equator </li></ul><ul><li>2. 1050 miles east of the Prime Meridian </li></ul><ul><li>3. 1,155 miles south of the equator </li></ul><ul><li>4. 1750 miles west of the Prime Meridian </li></ul>
  17. 17. Sidereal Days and Solar Days <ul><li>The sidereal day is defined to be the length of time for the vernal equinox to return to your celestial meridian. </li></ul><ul><li>The solar day is defined to be the length of time for the Sun to return to your celestial meridian. </li></ul><ul><li>The two are not the same, as illustrated in the following animation. </li></ul>
  18. 18. <ul><li>Because the Earth is in motion on its orbit around the Sun in the course of a day, the Earth must turn about 4 minutes longer each day (3 minutes and 56 seconds, to be exact) to bring the Sun back to the celestial meridian than to bring the vernal equinox back to the celestial meridian.  </li></ul><ul><li>Thus, the solar day is 3 minutes and 56 seconds longer than the sidereal day.  </li></ul><ul><li>It is this almost 4 minute per day discrepancy that causes the difference in sidereal and solar time. </li></ul>
  19. 19. Time Zone
  20. 20. Universal Time <ul><li>Like most other astronomical calculations, scientific predictions are usually presented in terms of Universal Time. </li></ul><ul><li>In order to convert predictions from UT to local time, you need to know what time zone you are in. </li></ul>
  21. 21. International Date Line <ul><li>The International Date Line is an irregular line drawn on the map of the Pacific Ocean, near, and in many places coincident with, the 180th meridian . </li></ul><ul><li>It marks the place where navigators change their date by one day on a transpacific voyage. </li></ul><ul><li>East of the line it is one day earlier than to the west. </li></ul>
  22. 22. <ul><li>The conversion from UT to local time in US is as follows:  </li></ul><ul><li>Atlantic Standard Time 60 º (AST ) = UT - 4 hours </li></ul><ul><li>Eastern Standard Time 75 º ( EST ) = UT - 5 hours </li></ul><ul><li>Central Standard Time 90 º ( CST ) = UT - 6 hours </li></ul><ul><li>Mountain Standard Time 105 º ( MST ) = UT - 7 hours </li></ul><ul><li>Pacific Standard Time 120 º ( PST ) = UT - 8 hours </li></ul><ul><li>If daylight savings is in effect in the time zone, you must ADD one hour to the above standard times. </li></ul><ul><li>June - DST </li></ul><ul><li>Sample Problem: Let's assume that an eclipse begins in Los Angeles, CA on June 20 at 20:25 UT . Los Angeles is in the , so:  </li></ul><ul><li>Local Time = 20:25 - 8 hours = 12:25 (= 12:25 pm) </li></ul><ul><li>But since Los Angeles observes we must ADD one more hour to the above time. </li></ul><ul><li>So the eclipse will begin at 13:25 (= 1:25 pm) local time .  </li></ul>
  23. 23. Time Zone Chart
  24. 24. Problem 1 <ul><li>The local time at 75 0 W is 10 hrs, Calc the time at </li></ul><ul><ul><li>A. 0 = </li></ul></ul><ul><ul><li>B. 120 0 W = </li></ul></ul><ul><ul><li>C. 90 0 E = </li></ul></ul><ul><ul><li>D. 150 0 W = </li></ul></ul><ul><ul><li>E. 120 0 E = </li></ul></ul><ul><ul><li>F. 60 0 W </li></ul></ul><ul><ul><li>G. 30 0 E = </li></ul></ul><ul><ul><li>H. 180 0 </li></ul></ul><ul><li>A. 15 hrs </li></ul><ul><li>B. 7 hrs </li></ul><ul><li>C. 21 hrs </li></ul><ul><li>D. 5 hrs </li></ul><ul><li>E. 23 hrs </li></ul><ul><li>F. 11 hrs </li></ul><ul><li>G. 17 hrs </li></ul><ul><li>H. 3 hrs </li></ul>
  25. 25. Problem 2 <ul><li>The local time at 105 0 E is 12 hrs and 25 min, Sept 19,2006. Determine the time and date on the following places: </li></ul><ul><li>A. 165 0 E </li></ul><ul><li>B. Greenwich, England </li></ul><ul><li>C. 45 0 E </li></ul><ul><li>D. 90 0 W </li></ul><ul><li>E. 60 0 W </li></ul><ul><li>F. 180 0 </li></ul><ul><li>G. 75 0 W </li></ul><ul><li>H. 30 0 E </li></ul><ul><li>I. 150 0 W </li></ul><ul><li>A. 16:25, Sept. 19 </li></ul><ul><li>B. 5:25, Sept 19 </li></ul><ul><li>C. 8:25, Sept 19 </li></ul><ul><li>D. 23:25, Sept 18 </li></ul><ul><li>E. 1:25, Sept 19 </li></ul><ul><li>F. 17:25, Sept 18 </li></ul><ul><li>G. 24:25, Sept 19 </li></ul><ul><li>H. 7:25, Sept 19 </li></ul><ul><li>I. 19:25, Sept 18 </li></ul>
  26. 26. Problem 3 <ul><li>The local time at 45 0 W is 16 hrs and 5 min, Sept 22,2006. Determine the time and date on the following places: </li></ul><ul><li>A. Universal time </li></ul><ul><li>B. 120 0 W </li></ul><ul><li>C. 45 0 E </li></ul><ul><li>D. 150 0 W </li></ul><ul><li>E. 105 0 E </li></ul><ul><li>F. 180 0 </li></ul><ul><li>G. 75 0 E </li></ul><ul><li>H. 165 0 E </li></ul><ul><li>A. 19:05, Sept. 22 </li></ul><ul><li>B. 11:05, Sept 22 </li></ul><ul><li>C. 22:05, Sept 22 </li></ul><ul><li>D. 9:05, Sept 22 </li></ul><ul><li>E. 2:05, Sept 23 </li></ul><ul><li>F. 7:05, Sept 22 </li></ul><ul><li>G. 24:05, Sept 23 </li></ul><ul><li>H. 6:05, Sept 23 </li></ul>
  27. 27. PROBLEM 4 <ul><li>The last Islamic terrorist action on American soil was the bombing of WTC last 9-11-2001. If the attack happens at around 9:05 AM UT, at what time did the bombing occur on the following places? </li></ul><ul><li>A. 60 o E </li></ul><ul><li>B. 120 o W </li></ul><ul><li>C. 120 o E </li></ul><ul><li>D. 60 o W </li></ul><ul><li>E. 165 0 E </li></ul><ul><li>F. 165 0 W </li></ul><ul><li>G. 180 0 </li></ul><ul><li>H. 30 0 E </li></ul><ul><li>I. 90 0 W </li></ul><ul><li>A. 13:05, 9/11 </li></ul><ul><li>B. 1:05, 9/11 </li></ul><ul><li>C. 17:05, 9/11 </li></ul><ul><li>D. 5:05, 9/11 </li></ul><ul><li>E. 20:05, 9/11 </li></ul><ul><li>F. 22:05, 9/10 </li></ul><ul><li>G. 21:05. 9/10 </li></ul><ul><li>H. 11:05, 9/11 </li></ul><ul><li>I. 3:05, 9/11 </li></ul>
  28. 28. Problem 5 <ul><li>The Shoemaker Levy 9 comet hits Jupiter last July 16, 1994. If the delayed telecast will be shown nationwide at 0730 hrs. UT, determine the time that the said event will be shown on the different places. </li></ul><ul><li>A. EST = </li></ul><ul><li>B. 139 o 15’00” E = </li></ul><ul><li>C. 82 o 45’00” W = </li></ul><ul><li>D. 58 0 30’00” E = </li></ul><ul><li>E. 142 o 45’00” W = </li></ul><ul><li>F. 160 0 30’00” E = </li></ul><ul><li>G. 112 0 15’00” W = </li></ul>
  29. 29. <ul><li>A total solar eclipse will occur on Dec 24 at 1530 hrs GMT in the southern part of the earth. </li></ul><ul><li>A. What is the local time if the eclipse would be observed on the following places? </li></ul><ul><ul><li>A. 49 o 30’00” E </li></ul></ul><ul><ul><li>B. 73 o 45’00” W </li></ul></ul><ul><ul><li>C. 157 o 15’00” E </li></ul></ul><ul><ul><li>D. 170 o 30’00” W </li></ul></ul><ul><li>B. Determine the season. </li></ul>Problem 6
  30. 30. <ul><li>The local time at 80 0 15’00”S & 60 0 30’00”W is 10 hrs, Sept 25, find the time and date at on the ffg. Places. </li></ul><ul><li>A. UT </li></ul><ul><li>B. 75 o E </li></ul><ul><li>C. 90 0 W </li></ul><ul><li>D. 165 0 E </li></ul><ul><li>E. 135 o W </li></ul><ul><li>F. 180 o </li></ul><ul><li>G. 15 o E </li></ul><ul><li>Determine the season. </li></ul><ul><li>Plot the point </li></ul>Problem 7
  31. 31. <ul><li>The local time at 68 o 45”00’N, 23 o 15’00’ E is 21:15hrs. Sept 27, 2006. </li></ul><ul><li>A. Calculate the time of the following Longitudes </li></ul><ul><ul><li>1. UT= </li></ul></ul><ul><ul><li>2. 69 o 15’00” W = </li></ul></ul><ul><ul><li>3. 52 o 15’00’ E = </li></ul></ul><ul><ul><li>4. 146 o 30’00” W = </li></ul></ul><ul><ul><li>5. 128 o 15’00” E = </li></ul></ul><ul><ul><li>6. 168 o 45’00” W = </li></ul></ul><ul><li>B. Determine the season </li></ul><ul><li>C. Determine the distance from the </li></ul><ul><ul><li>1. Tropic of Cancer (mi) </li></ul></ul><ul><ul><li>2. Antarctic Circle (km) </li></ul></ul><ul><ul><li>3. 35 0 30’00” W (mi) </li></ul></ul><ul><li>D. Plot the point </li></ul><ul><li>A 1. 19:15 hrs Sept. 27 </li></ul><ul><li>2. 14:15hrs </li></ul><ul><li>3. 22:15 hrs </li></ul><ul><li>4. 9:15 </li></ul><ul><li>5. 4:15 hrs. Sept. 28 </li></ul><ul><li>6. 8:15 hrs </li></ul><ul><li>B. Autumn </li></ul><ul><li>C. 1. 70 x 45.25 = 3167.5 mi </li></ul><ul><li>68 o 45’ </li></ul><ul><li>- 23 o 30’ </li></ul><ul><li>45 o 15’ </li></ul><ul><li>2. Antarctic </li></ul><ul><ul><li>135.25 x 112 = 15148 km </li></ul></ul><ul><li>68 o 45’ </li></ul><ul><li>+66 o 30’ </li></ul><ul><li>135 o 15’ </li></ul>Problem 8
  32. 32. Problem 9
  33. 33. <ul><li>END OF PRESENTATION </li></ul><ul><li>NEXT MEETING EXAM! </li></ul>
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