1. Unit 1: TIME Review

2. Concept of Time What is Time? –Time identifies a measurable period during which an action, process, or condition continues to exist –Measuring time is an attempt by humans to create a context in which they exist

3. Concept of Time Why is time important to us? –Our language includes many sayings about time Time is money It’s time to go I’m wasting my time –Schedules School, transportation, work, appointments – Modern time-saving conveniences Fast food, high-speed internet, automatic tellers

4. History of Life on a 24 Hr Scale MidnightOrigins of Life (start of Precambrian era) 6:00 pmFossils Abundant 6:54 pm First Fossils; invertebrates and plants invade land 7:44 pmFirst Fossil Vertebrates 8:06 pmFirst Amphibians & Bony Fish

5. 9:15 pm  Primitive Reptiles 10:01 pm  First birds; flowering plants arose; first remains of mammals 10:23 pm  Age of reptiles; first marsupials 11:06 pm  Age of reptiles ends; age of mammals begins 8 seconds before midnight  Man appears 4 seconds before midnight  Recorded history begins

6. Exploring Time To understand the past, present and future, humans have divided time into measureable portions. –Eg. We divide the year into months and use a calendar to measure the seasons

7. Time Terms Absolute Time –is time measured in precise periods,dates or times Joan of Arc was born in 1412 The class begins at 8:30.

8. Time Terms Relative Time –Is the time measured in relation to other things He was born the same year as Sidney Crosby

9. Time Terms Cyclical Time –A record of natural cycles, that is, cycles that exist in nature, such as days or seasons. They are repeated over and over. The earth’s rotation – relationship with the moon – day, month The earth’s revolution – relationship with the sun – year, season –The cyclical calendar that we use in our everyday lives is known as the Gregorian calendar. It was developed under the sponsorship of Pope Gregory XIII about 400 years ago

10. Time Terms Linear Time –Is a record of events in sequence from the past to present –The use of linear time allowed societies to organize their activities over a span of many seasons and years

11. Time and Culture How does culture affect how time is perceived? Case studies: –Business Transaction –A Formal Meeting –A Medical Office

12. Time Questions From Roots of Society Two sets Study questions are good summary of information

13. Time & Measurement Personal Time Historical Time Geological Time Epoch

14. Man Measuring Time SundialRopesCandlesHourglass Water Clock Mechanical Clock

15. Time Zones Notes on time zones Why is Greenwich, England important How many time zones in the world What is the reason for that number of time zones

16. Time Zones of Canada How does time differ between zones Be able to calculate time differences Know difference between summer and winter Any of the questions can be used Refer to two maps given

17. Readings Standard Time is 100 Years Old Today –When did standard time start –What happened before standard time Time –11 questions followed –Seven Day Week, Solar Day

18. Latitude & Longitude LatitudeLongitude Distance Between Lines Minutes and Seconds Equator