Strange thing happens to time when you travel. Because the earth is divided into twenty-four time zones one hour apart, you can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes the hour. Traveling west, you set your clock back; traveling east, you set it ahead

Strange thing happens to time when you travel. Because the earth is divided into twenty-four time zones one hour apart, you can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.
If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes the hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
If you travel by ship across the Pacific you cross the international date line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar the full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow!
26. The best title for this selection is .
A. A Trip Across the Atlantic
B. How Time Changes Around the World
C. Crossing the International Date Line
D. How Time Zones Were Set Up
27. The difference in time between zones is .
A. seven days B. twenty-four hours
C. one hour D. more than seven days
28. From this selection it seems true that the Atlantic Ocean .
A. is in one tie zone
B. is divided into twenty-four time zones
C. is divided into five time zones
D. cannot be crossed in five days
29. The international date line is the name for .
A. the beginning of any new time zone
B. the point where time changes by one hour
C. the point where a new day begins
D. any time zone in the Pacific Ocean
30. If you cross the ocean going east, you set your clock .
A. ahead one hour in each new time zone
B. ahead one time for the whole trip
C. back one full day for each one full day
D. ahead by twenty-three hours