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Introduction to Geography and Culture
Instructor: Daniel Ondich dan.ondich@sobrietyhigh.org


 * What's Due for Lesson 12:**

Video Version** ||= **On Nicenet.org:** None ||= **In your blog:** Current Event #3 ||= **In your wiki:** Create World Time Zones page and answer quesitons || **Other:** None || **Vocabulary:** None ||
 * = **What's Due


 * Step 1**:

Log into your wiki and write Current Event #3. Follow the criteria in the [| Current Events Rubric.pdf].


 * Step 2**:

Read through the following: Before Standard Time • Before 1884 nations used their own prime meridians for both land and marine maps • Very confusing for trade and telling time
 * Time Zones**

The Time Decision • 1884: International Meridian Conference held • Attended by 27 nations • The Royal Observatory at Greenwich was chosen as prime meridian -Located near London -Previously used by many nations for marine charts • Greenwich Mean Time (GMT) became the world standard for time.

Calculating Time Zones • The prime meridian thus became 0 degrees longitude. • The time zone were then decided by using a simple equation 1. the Earth is a 360 degree sphere 2. We use a 24 hour day 3. 360 degrees divided by 24 hours equals 15 degrees per hour a. For every 15 degrees there is a different time zone b. 7.5 degrees on either side of a 15 degree meridian were included in a time zone

The International Date Line • Located at the 180 degree mark • Strategically placed in a relatively unpopulated area • Marks where each day officially begins -The west side is always 1 day ahead of the east side -The new day sweeps across to the west from the International Date Line


 * Step 3**:

Create a new page in your wiki titled "World Time Zones". Copy and paste the following (including maps) into your new page. (You will have all of the next lesson to complete this assignment)

Time zones can be a little tricky. Here's a couple of tips:

1. Locate the starting city or country on the time zone map. You may need a world political map to find the cities and countries. 2. Add 1 hour for each zone you move to the east (right). 3. Subtract 1 hour for each zone you move to the west (left). 4. Go to the next day if you cross the International Date Line from east to west. 5. Go back a day if you cross the International Date Line from west to east.

World Time Zones

Use the following maps to answer the questions (or open it in a separate window [|here] to view it larger by clicking on the image).



1. How many world time zones are there? Why?

2. Approximately how wide is each time zone?

3. why are the time zone boundaries are not completely straight.

Use your time zone map to calculate the answers to the following questions (remember that you add time as you move east and subtract time as you move west).

4. If the time in London is 12:00 noon GMT, what time is it in: Chicago _ __Paris__ _ Moscow __Tokyo__ Rio de Janeiro __Honolulu__

__5. If the time in Chicago is 12:15 P.M., what time is it in: London__ Paris Moscow _ Tokyo _ __Buenos Aires__ Jerusalem

6. If the time in Bombay is 9:37 P.M on Tuesday., what time and day is it in: Wellington Singapore Fairbanks _ Rome

7. If it is Thursday, January 8, 12:00 noon in St. Paul, what time and day is it in: Miami _ __Seattle__ Atlanta __Dallas__ _ Hong Kong _ __Cairo__ _ Mexico City __St. Petersburg__ _ __San Diego__ _ __Buenos Aries__ ___

8. It is 12:00 Midnight GMT. How much of the earth is in the old calendar day, and how much is in the new calendar day?

9. If it is Tuesday morning west of the International Date Line (Eastern Hemisphere), then what day is it east of the International Date Line (Western Hemisphere)?

10. If it is January 7, 10:00 P.M. in Chicago, what date and time is it in London?

11. If it is October 29, 3:00 A.M. in Sydney, what date and time is it in Chicago?

12. A man living in Honolulu, Hawaii on Tuesday 12:00 P.M. calls his cousin in Tokyo, Japan. What time is it in Tokyo? What calendar day is it?

13. If you are visiting your Grandparents in Boston and you want to watch your favorite TV show, Smallville, which is on at 8:00 CST, what time will it be on at your grandparents? What about at your aunt’s house in San Francisco?

14. If you want to call your pen pal in Saudi Arabia between 7:00 and 9:00 (their time), what time would you have to make the call here in Minnesota?


 * End World Hunger!**

Improve your vocabulary while donating free rice through the UN World Food Program...click [|HERE] to begin!

