1. By: Kyle Ferguson

2. Why We Have Time Zones  People use to set their clocks back or forward based on where the sun and stars were in the sky  The earth is on the axis and it is always tilting and rotating  This is why we have seasons  Dawn and dusk occur at different times in different places in the world

3. How Many Time Zones Do We Have  We have about 24 time zones  There are 6 time zones in the US  All of these time zones are spread all out through the world

4. How Can Time Zones Effect You  There are different times in different places of the world  Some have a huge time difference and some only have a little time change  When the time changes and you did not set your clock back then you could go to school 1 hour early  It can also effect the amount of sleep you get

5. Conclusion  So in conclusion, I have talked to you about:  Why we have time zones  How many time zones we have  How time zones can effect you

6. Thanks For Listening

7. Bibliography http://www.timeanddate.com/worldclock/ http://www.timezoneconverter.com/cgi-bin/tzc.tzc http://www.timeanddate.com/time/map/