Review#3 earth dimensions
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Review#3 earth dimensions

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EARTH

EARTH

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Review#3 earth dimensions Review#3 earth dimensions Presentation Transcript

  • L.O: REVIEW EARTH’SSHAPE, LATITUDE andLONGITUDE
  • The true shape of Earth is anoblate sphere.The earth is slightly flat at the polesand bulging at the equator.
  • The true shape is an oblatesphere, but from space pictures itlooks like a perfect sphere.
  • POLARIS the NORTH star is a starthat is ONLY seen in the northernhemisphere.
  • POLARIS IS DIRECTLY OVER THE NORTHPOLE..
  • ALL THE STARS APPEAR TO REVOLVEAROUND POLARIS AT A VELOCITY 15 PERHOUR.
  • THE TWO POINTER STARS ON THE BIGDIPPER POINT TO POLARIS ON THEEND OF THE LITTLE DIPPER.
  • In the northern hemisphere, POLARIS’altitude ALWAYS equals your latitude.
  • WHAT IS THIS OBSERVER’S LATITUDE?
  • 52 DEGREES NORTH
  • AS your latitude INCREASES, thealtitude of Polaris ALSO INCREASES.
  • the CHANGE IN THE altitude of Polarisis evidence that Earth is round.
  • At the equator (zero degreeslatitude), Polar is at zero altitude.
  • At the north pole (90 degrees latitude)Polaris’ altitude is also 90 degrees.
  • What is one latitude if Polaris is at 45degrees?
  • One’s latitude is also 45 degrees N
  • On the regents, I will have todetermine the latitude andlongitudes of CITIES in NEW YORKSTATE and on other parts of EARTH.
  • FINDING THE LATITUDES OF NEW YORKSTATES CITIES IS EASY. I CAN USE THE MAPON PAGE 3 OF THE ESRT.• LATITUDES IN NEWYORK STATE AREBETWEEN 41 N AND45N.• LONGITUDES IN NEWYORK STATE AREBETWEEN 72W AND 79W.
  • ON THE REGENTS, I WILL HAVE TOFIND THE LATITUDE ANDLONGITUDE OF PLACES ON EARTH
  • THE IMPORTANT LATITUDESTHE EQUATOR LATITUDE IS ZERO.NORTH POLE 90 NSOUTH POLE 90 S.
  • LONGITUDE• EACH TIME ZONE IS 15 DEGREES WIDE.• EX: LOCATIONS WITH A 3 HOUR DIFFERENCEIN TIME ARE: 3 X 15 = 45 DEGREES APART.
  • Open your green workbook to page204. complete typical latitude andlongitude questions.