1 / 19

Time

Time. All measurements of time are based directly on the apparent movements of the sun. Solar noon : when the sun is centered at its highest point in the sky on that day. Solar Day : the time from one noon to the next noon (midnight to midnight actually measures one day).

fountain-hubert
Télécharger la présentation

Time

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Time

  2. All measurements of time are based directly on the apparent movements of the sun.

  3. Solar noon: when the sun is centered at its highest point in the sky on that day.

  4. Solar Day: the time from one noon to the next noon (midnight to midnight actually measures one day)

  5. For convenience we have adjusted the day to 24 hours, although it is a little less

  6. The Basis of the Time Zone: • The Earth like all circles is 360˚ around • The Earth spins 360˚ in one day (24 hours) • If we divide 360˚ by 24 hours in a day, we get 15˚ for every hour

  7. The basis of Time Zones • Since the Earth moves 15˚every hour, Earth is divided into 24 time zones that are 15˚ of longitude apart.

  8. Time Zones • For convenience sake, states and countries do not always divide the time zones directly along the lines of longitude

  9. Think about this… • Earth Rotates counterclockwise (so that means it rotates West to East) • This means that the EAST experiences the day first… • Time zones to the east are later in the day then time zones in the west

  10. Time Zone Problems!! 1.  If the time was 12:15 am in Los Angeles, California what time would it be in Bow, New Hampshire? 2.  If it was 9:00 p.m. in New Hampshire, what time would it be in Miami, Florida? 3.  About how many time zones would you pass through if you traveled 190 degrees around the earth?

More Related