1. Time Zones

2. Daylight on one side; nighttime on the other.
The Earth’s Rotations
Daylight on one side; nighttime on the other.
How long does it take for the Earth to rotate once on it’s axis?

3. 24
Scientists created a different time zone for each hour of the day, so how many time zones are there in the world?

4. What is the starting point for measuring time?

5. This imaginary line runs from the North Pole to the South Pole and passes through , England.
Greenwich

6. Most time zones? Least time zones?
Asia
Australia

7. International
Date
Line

8. Thursday in North America
Everything west of the line is one day ahead of everything east of the line.
Thursday in North America
Friday in Asia

9. How do time zones affect your life?

10. How many time zones does the United States have?6

11. Pacific
Eastern
Mountain
Central
Alaskan
Hawaiian