Locations on Earth Created By: Mr. Kreeger Created By: Mr. Kreeger

Homework and Page References Page References –Page in text _____________________________ __________ HW –#1- Do problems 1-5 on page 114 –# 2- Handouts if not finished in class Page References –P–Page in text _____________________________ __________ HW –#–#1- Do problems 1-5 on page 114 –#–# 2- Handouts if not finished in class

Table of Contents Table of Contents 1.Latitude 2.Longitude 3.Finding Locations 1.Practice finding locations 4.Time zones 5.Determining time with longitude 1.Practice telling time with longitude 6.Determining latitude with the Polaris (The North Star) 1.Latitude 2.Longitude 3.Finding Locations 1.Practice finding locations 4.Time zones 5.Determining time with longitude 1.Practice telling time with longitude 6.Determining latitude with the Polaris (The North Star)

Introduction Video

1. Latitude Sets of circles that are north and south of equator Parallels-The lines that run East and West around the world parallel to equator Latitude- Angular distance N & S of equator –Highest latitude= 90 N (North Pole) –Lowest Latitude = 90 S (South Pole) –Middle of all Latitudes = 0 (Equator) Sets of circles that are north and south of equator Parallels-The lines that run East and West around the world parallel to equator Latitude- Angular distance N & S of equator –Highest latitude= 90 N (North Pole) –Lowest Latitude = 90 S (South Pole) –Middle of all Latitudes = 0 (Equator)

1. Latitude How many degrees are there in a circle? What is the distance to either pole? 1 degree of latitude= 111km, 68.9 miles –Each degree of latitude has 60 equal parts called minutes. (How long is 1 minute?) –Each minute of latitude has 60 equal parts called seconds. (How long is 1 second?) How many degrees are there in a circle? What is the distance to either pole? 1 degree of latitude= 111km, 68.9 miles –Each degree of latitude has 60 equal parts called minutes. (How long is 1 minute?) –Each minute of latitude has 60 equal parts called seconds. (How long is 1 second?)

1. Latitude (Degrees, minutes, seconds)

2. Longitude Sets of circles that are east and west of the Prime Meridian Meridian- The lines (semi-circles) that run north and south from pole to pole. Longitude- The angular distance E & W of the Prime Meridian. –Highest Longitude = 180 (International Date line) –Lowest Longitude = 0 (Prime Meridian Greenwich England) Sets of circles that are east and west of the Prime Meridian Meridian- The lines (semi-circles) that run north and south from pole to pole. Longitude- The angular distance E & W of the Prime Meridian. –H–Highest Longitude = 180 (International Date line) –L–Lowest Longitude = 0 (Prime Meridian Greenwich England)

2. Longitude 2. Longitude The distance covered by a degree of longitude depends on where the degree is measured. WHY???????? The distance covered by a degree of longitude depends on where the degree is measured. WHY????????

2. Longitude At equator=0 degrees latitude=1 degree of longitude is equal to 111km. At 60N, 1 degree of longitude is equal to 55km. At 80N, 1 degree of longitude is equal to 20km. At equator=0 degrees latitude=1 degree of longitude is equal to 111km. At 60N, 1 degree of longitude is equal to 55km. At 80N, 1 degree of longitude is equal to 20km.

How to find locations How to find locations

3. Finding Locations 3. Finding Locations In order to find any location on the earth you need to find the point where the latitude and longitude cross each other. –Latitude- Measured in degrees north and south from 0(Equator) to 90N (North Pole) 90S (South Pole)--> Always said first –Longitude- Measured in degrees east and west from 0(Prime Meridian) to 180 (International Date Line) Always said second In order to find any location on the earth you need to find the point where the latitude and longitude cross each other. –Latitude- Measured in degrees north and south from 0(Equator) to 90N (North Pole) 90S (South Pole)--> Always said first –Longitude- Measured in degrees east and west from 0(Prime Meridian) to 180 (International Date Line) Always said second

Practice finding Locations Locations in the USA Map of USA Locations in the World Map of the World Locations in the USA Map of USA Locations in the World Map of the World

Time Zones Earth has 24 time zones, each one is 15 degrees of longitude (why)??? This means the Earth rotates at 15 degrees per hour so 15 degrees/hour X 24 hours = 360 degrees Earth has 24 time zones, each one is 15 degrees of longitude (why)??? This means the Earth rotates at 15 degrees per hour so 15 degrees/hour X 24 hours = 360 degrees

Determining time using Longitude 12:00 pm- Sun is highest in sky –Occurs at different times, at different locations--> Earth is spinning 0 degrees longitude- Prime Meridian center of all longitudes Can determine time based on how many degrees east or west you are from the prime meridian 12:00 pm- Sun is highest in sky –Occurs at different times, at different locations--> Earth is spinning 0 degrees longitude- Prime Meridian center of all longitudes Can determine time based on how many degrees east or west you are from the prime meridian

Determining Time using Longitude cont… To figure out what time it is follow these steps: –Determine what time it is at Greenwich England (0 degrees longitude) –If you are East of 0 degrees longitude the time will be ahead 1 hour for every 15 degrees of longitude an observer moves. –If you are West of 0 degrees longitude the time will be behind 1 hour for every 15 degrees of longitude an observer moves Remember if you move East time goes Ahead if you move West time goes Back To figure out what time it is follow these steps: –D–Determine what time it is at Greenwich England (0 degrees longitude) –I–If you are East of 0 degrees longitude the time will be ahead 1 hour for every 15 degrees of longitude an observer moves. –I–If you are West of 0 degrees longitude the time will be behind 1 hour for every 15 degrees of longitude an observer moves Remember if you move East time goes Ahead if you move West time goes Back

Practice telling time with Longitude If the time at Greenwich England is 2:00 am what time is it 75 W longitude. If the time at Greenwich England is 12:00 am what time is it 105 E longitude If the time is 3:00 pm at 30 W longitude what time is it at 60 E longitude. If the time at Greenwich England is 2:00 am what time is it 75 W longitude. If the time at Greenwich England is 12:00 am what time is it 105 E longitude If the time is 3:00 pm at 30 W longitude what time is it at 60 E longitude.

Determining Latitude using Polaris (The North Star) The latitude of any location north of the equator is equal to the altitude of the north star: –Ex: New York City (Latitude = 40 N, altitude of the North Star = 40 degrees above horizon) The latitude of any location north of the equator is equal to the altitude of the north star: –Ex: New York City (Latitude = 40 N, altitude of the North Star = 40 degrees above horizon)