SLIDE 1
Latitude and Longitude Latitude and Longitude The earth is divided - - PowerPoint PPT Presentation
Latitude and Longitude Latitude and Longitude The earth is divided - - PowerPoint PPT Presentation
Latitude and Longitude Latitude and Longitude The earth is divided into lots of lines called latitude and longitude . Together they form a grid pattern on a map or globe Lines of longitude only Other lines of lat Latitude added (Equator )
SLIDE 2
SLIDE 3
Together they form a grid pattern
- n a map or globe
SLIDE 4
Lines of longitude only Latitude added (Equator ) Other lines of lat & long added
SLIDE 5
SLIDE 6
Lines of Latitude
http://plantwatch.sunsite.ualberta.ca/library/images/lat.jpg
These parallel lines on the globe are lines
- f latitude.
SLIDE 7
Latitude
North Pole South Pole Lines of latitude are numbered from 0° at the equator to 90° N.L. at the North Pole. Lines of latitude are numbered from 0° at the equator to 90° S.L. at the South Pole.
] [
90 80 70 60 50 40 20 30 10 90 80 70 60 50 40 20 10 30
SLIDE 8
Latitude
The North Pole is at 90° N The South Pole is at 90° S
The equator is at 0°
- latitude. It
is neither north nor
- south. It is
at the center between north and south. 40° N is the 40° line of latitude north
- f the equator.
40° S is the 40° line of latitude south of the equator.
SLIDE 9
Lines of Latitude
►Lines of latitude run east and west. ►Latitude measures distance from the
Equator towards the North or South pole
►Lines of latitude never meet (circles
around the globe)
►The lines measure distances in degrees
from the center of the earth.
SLIDE 10
The Equator
Latitude is measured above and below the Equator in degrees.
http://nationalatlas.gov/articles/mapping/a_latlong.html#thre e
SLIDE 11
Where is 0 degree latitude ?
►The equator is 0 degree latitude. ►It is an imaginary belt that runs
halfway point between the North Pole and the South Pole.
Equator
SLIDE 12
90 degrees.. ?
►There are 90 degrees of latitude in the
Northern Hemisphere &
► 90 degrees of latitude in the south pole. ►In total there are 180 degrees of latitude. ►WHY IS THE NORTH AND SOUTH POLE AT
90 degrees anyway?? Why that number?
SLIDE 13
SLIDE 14
Longitude
Lines of longitude begin at the Prime Meridian. 60° W is the 60° line of longitude west
- f the Prime
Meridian.
The Prime Meridian is located at 0°. It is neither east or west
60° E is the 60° line of longitude east of the Prime Meridian. W E
SLIDE 15
Prime Meridian
The Prime Meridian (0°) and the 180° line split the earth into the Western Hemisphere and Eastern Hemisphere.
Prime Meridian Western Hemispher e Eastern Hemisphere Places located east of the Prime Meridian have an east longitude (E) address. Places located west of the Prime Meridian have a west longitude (W) address.
SLIDE 16
INTERNATIONAL DATE LINE 180°
► SEPARAT
RATES ES 2 CALENDAR ENDAR DAYS. S. Ameri rica ca to Asia ia – gain n a day Asia ia to Ameri rica ca – lose se a day
SLIDE 17
A location’s coordinates (____° N or S, ____ ° E or W)
SLIDE 18
By combining latitude and longitude, any location can be pinpointed
SLIDE 19
SLIDE 20
Lines of Longitude…
►Lines of longitude run north and south. ►Longitude meet at the North and South
poles.
►Longitude measures distance East and West
- f the Prime Meridian
►The lines measure distances in degrees
from the center of the earth.
SLIDE 21
Lines of Longitude
http://plantwatch.sunsite.ualberta.ca/library/images/long.jpg
SLIDE 22
Where is 0 degree longitude ?
►The prime meridian is 0 degrees
longitude.
►It is located in Greenwhich England. ►From this point, Longitude runs 180 degrees
East or West
►There are 360 meridians of Longitude in
total
SLIDE 23
Longitude Angles
- Longitude is measured in
degrees east or west of the Prime Meridian
- Angles are measured from
the centre of the earth (vertex of angle) east or west of the Prime Meridian
http://www.csmate.colostate.edu/cltw/cohortpages/viney/latitude.html
SLIDE 24
Orange cut through lines of longitude Orange cut through lines of latitude
SLIDE 25
Latitude and Longitude combined
Latitude and longitude measurements are based on angle measurements as shown in this diagram and previous two diagrams
http://cache.eb.com/eb/image?id=64904&rendTypeId=4
SLIDE 26
What is the Lat and Long
- f this point?
http://www.digitalgeography.co.uk/wp-content/uploads/2007/07/grid.jpg
SLIDE 27
SLIDE 28
Hemispheres
►By using the equator and prime
meridian, we can divide the world into four hemispheres, north, south, east, west
►Hemi= half ►Sphere = circle
SLIDE 29
Latitude lines run east/west but they measure north or south of the equator (0°) splitting the earth into the Northern Hemisphere and Southern Hemisphere.
SLIDE 30
SLIDE 31
Time Zones
►The Earth is divided into 24 time
zones, corresponding to 24 hours in a day.
►As the earth rotates, the sun shines in
different areas, moving from east to west during the course of a day.
►Places that have the same longitude
will be in the same time zone.
SLIDE 32
SLIDE 33
LONGITUDE AND TIME
►The world rotates (spins) 360° in 24 hours.
360° / 24 hours = 15° per hour
►The world has 24 time zones, each l5°
apart.
THERE IS A 1 HOUR TIME DIFFERENCE FOR EVERY 15° OF LONGITUDE
SLIDE 34
SLIDE 35
Time Zones: Daylight Savings
SLIDE 36
Earth rotates west to east Solar time is based on the position
- f the sun
NIGHT IS FALLING ON EARTH
Look at the East Coast of the United
- States. The lights are already lit.
California the sun is still visible.
SLIDE 37
This pictures shows AMERICAN CITIES at night.
SLIDE 38
Saguenay
Ottawa Sept-Iles Mexico City Québec Montréal St.John Those light are Boston, New York, Philadelphia and Washington. Toronto Detroit Miami Havana Puerto Rico Houston Dallas
It’s still daylight in California
Thunder Bay Port-au-Prince
SLIDE 39
NIGHT IS FALLING ON EARTH. Look at Paris and Barcelona, the lights are already lit, meanwhile in London, Lisbon and Madrid the sun is still visible. Looking south, we can see the islands in the middle of the ocean. We have a perfect view of the British Islands, Iceland and Canada.
SLIDE 40
France Spain
AFRICA
Italy England Iceland
Atlantic Ocean