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What Time Is It?


You will be following through with an investigation on the computer at  Follow the steps provided in order to go through the investigation correctly.  Along the way there will be questions for you to answer.  The questions are written below so you will know your location and you do not get lost.


Start Here:                Go to

                                    On the left hand side of the screen is a box for a keycode.

                                    Enter:  ES0405 and click enter.

                                    Observe the pictures and the locations they are from.

1. Which continents are experiencing day in the image?


2. Which continents are experiencing night?


3. In what direction does Earth rotate?


4. From what direction does the sun appear to rise each day?


5. In what direction does the sun appear to set each day?


6. When the east coast of the United States is experiencing sunrise, where on Earth is the sun setting?


7. When the west coast of Africa is experiencing sunrise, approximately what time is it in India?


As you watch the movie, focus on your own location and visualize the changing view you would see from Earth as your location moves through a day. Imagine how the sun appears to move through the sky through the day.

Now think for a moment about shadows caused by the sun. Shadows cast by objects in sunlight always point away from the sun. Think about the direction shadows would point in the morning, at noon, and in the afternoon.

8. Describe how you think the direction of a shadow cast by a flagpole at your location would change through the daylight hours.





9. Sketch a map view of a flagpole area and show the times that the flagpole's shadow would indicate when it pointed west, north, and east.







10. Write a simple equation to convert Universal Time to local time for the time zone where you live.


11. How many time zones (hours) apart are St. Louis, Missouri, U.S.A. and Kyoto, Japan?


12. During the hours you are normally awake, when could you call your friend in Japan to reach them when they are normally awake?


The United States is spread across six time zones. From west to east, they are Hawaii, Alaska, Pacific, Mountain, Central, and Eastern.

Imagine that you live in Philadelphia, Pennsylvania at 75 degrees west longitude. It is three in the afternoon, Eastern Standard Time, and you call your grandparents in Reno, Nevada at 120 degrees west longitude.

13. What time is it in Reno (Pacific Standard Time) when you call?


14. If a plane departed at 4:00 p.m. on October 24 from Tokyo, Japan (approximately 135 degrees E), and the flight takes 9 hours and 30 minutes, what time and date would the plane arrive in Los Angeles (approximately 120 degrees west)?


Hint: First, figure the time difference between the two cities.Remember that each time zone is 15 degrees of longitude wide. Then consider what time it will be in Los Angeles 9 and a half hours after departure.

15. Use the information in the description and on the graphic to calculate the boat's longitude.