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Locations on Earth Created By: Mr. Kreeger

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**Homework and Page References**

Page in text _______________________________________ HW #1- Do problems 1-5 on page 114 # 2- Handouts if not finished in class

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**Table of Contents Latitude Longitude Finding Locations Time zones**

Practice finding locations Time zones Determining time with longitude Practice telling time with longitude Determining latitude with the Polaris (The North Star)

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Introduction Video

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**1. Latitude Latitude- Angular distance N & S of 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)

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**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?)

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**1. Latitude (Degrees, minutes, seconds)**

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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)

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

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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.

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How to find locations

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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

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**Poll: The location of Slide Mountain is**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: The location of Slide Mountain is

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**Poll: Which latitude and longitude coordina...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: Which latitude and longitude coordina...

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**Poll: Approximately what are the coordinate...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: Approximately what are the coordinate...

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**Practice finding Locations**

Locations in the USA Map of USA Locations in the World Map of the World

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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

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**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

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**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

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**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.

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**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)

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**Poll: What could be the approximate locatio...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: What could be the approximate locatio...

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**Poll: At which laitdue will POLARIS be over...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: At which laitdue will POLARIS be over...

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**Poll: To an observer on a ship at sea, at w...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: To an observer on a ship at sea, at w...

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**Poll: What is the differnece in mean solar ...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: What is the differnece in mean solar ...

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**Poll: As a person travels due west across N...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: As a person travels due west across N...

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**Poll: At which New York State location is t...**

Press F5 or use the tool bar to enter presentation mode in order to see the poll. Poll: At which New York State location is t...

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