time

Time 1) About how long ago did the big bang take place? 2) What is a black hole? 3) Does the universe continue to expand? 4) Was there really a big bang? 5) What light elements seem to support the Big Bang Theory?

10) What is an eon, epoch, era, and age? 11) List three ancient calendars 12) List two ancient clocks and how they worked. 13) What was a revolution of timekeeping? 14) What allows for standard more accurate clocks? 15) What are time zones? 16) What is the prime meridian? 17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii? 18) What is Daylight Saving Time? Do we use this in Saskatchewan? 19) Is there a year zero? 1) It happened around 13.7 billion years ago. 2) Black Holes are areas of intense gravitational pressure. 3) It continues to expand and cool to this day. 4) we tend to imagine a giant explosion. Experts however say that there was no explosion. 5) Finally, the abundance of the "light elements" Hydrogen and Helium found in the observable universe are thought to support the Big Bang model of origins. Time Keeps on Slippin' 1) What is the current calendar most of the world uses / accepts? Explain who made it and why this is accepted. 2) What is a leap year? 3) List three other types of calendars used and how they set up their calendar (ex. Lunar). 4) What is BC? 5) What is BCE? 6) What is AD? 7) What is CE? 8) What is MYA? 9) According to the timeline site how many periods of when are there and list time.

20) Are we starting a new decade in 2010 or 2011? 21) What is linear time? 22) What is cyclical time?

1. The Gregorian calendar is the most internationally used. The person who made the calendar is [|Pope Gregory XIII] 2. A leap year is a year containing one extra day. 3. Purely lunar calendars Those which are based on the natural cycles of the Moon.

Purely solar calendars Those which are based on the cycle of the seasons, which results from the motion of the Earth around the Sun. Solilunar calendars These calendars aim to be both solar calendars and lunar calendars, but are more successful in tracking the lunar cycle than the seasonal cycle. 4. BC means before christ. 5. BCE means before common era 6. AD means after death 7. CE means common era 8. MYA means millions of years ago 9. There are 21 periods. [|Big Bang] • [|Bronze Age] • [|Byzantine] • [|Cambrian] • [|Enlightenment] • [|First Settlements] • [|Formation Earth] • [|Hellenistic Age] • [|Ice Age] • [|Industrial Age] • [|Iron Age] • [|Mesozoic] • [|Middle Ages] • [|Permian] • [|Reformation] • [|Renaissance] • [|Roman Age] • [|Stone Age] • [|Future] 10. Geoligical Time Units. 11. Celestial bodies — the Sun, Moon, planets, and stars — have provided us a reference for measuring the passage of time throughout our existence. Ancient civilizations relied upon the apparent motion of these bodies through the sky to determine seasons, months, and years. The earliest Egyptian calendar [[|Ref.]] was based on the moon's cycles, but later the Egyptians realized that the "Dog Star" Before 2000 BCE, the Babylonians (in today's Iraq) used a year of 12 alternating 29 day and 30 day lunar months, giving a 354 day year. 12. Sun Clocks Their moving shadows formed a kind of sundial, enabling people to partition the day into morning and afternoon.Water Clocks these were stone vessels with sloping sides that allowed water to drip at a nearly constant rate from a small hole near the bottom. 13. In Europe during most of the Middle Ages (roughly 500 CE to 1500 CE), technological advancement virtually ceased 14. In 1721, George Graham improved the pendulum clock's accuracy to 1 second per day by compensating for changes in the pendulum's length due to temperature variations. 15. A time zone is a region on [|Earth], more or less bounded by lines of [|longitude], that has a uniform. 16. The prime meridian is the zero (0) line of longitude. The zero line of latitude is a given in the form of the equator, but for longitude the line was agreed on at an international conference at Washington DC in 1884. 17. Toronto: 12 p.m. London: 12 p.m. Moscow: 8 p.m. Tokyo: 1 p.m. hawaii: 6 a.m. 18. Daylight Saving Time (or summertime as it is called in many countries) is a way of getting more light out of the day by advancing clocks by one hour during the summer. During Daylight Saving Time, the sun appears to rise one hour later in the morning, when people are usually asleep anyway, and sets one hour later in the evening, seeming to stretch the day longer. No we don't use it in saskatchewan 19. "Year zero" does not exist in the widely used [|Gregorian calendar] or in its predecessor, the [|Julian calendar]. Under those systems, the year [|1 BC] is followed by [|AD 1]. However, there is a year zero in [|astronomical year numbering] (where it coincides with the Julian year 1 BC) and in [|ISO 8601:2004] (where it coincides with the Gregorian year 1 BC) as well as in all [|Buddhist] and [|Hindu calendars]. 20. 2011 21. Linear time is a concept where by time is seen sequentially, as a series of events that are leading toward something: beginning, and an end. In Newtonain theory it is something absolute in reality, regardless of human perception. 22. Circular time sees time as circular, not necessarily leading towards something, but repeating itself in a cycle of events.

Geological Time Activities
Part 1 - Q & A

Go to this link []

Find the answers to these questions and post to wiki and e-mail answers

1) What happened at 12 AM January 1, 2004? 2) What happened at 4:41 PM February, 25 2004? 3) How long of actual time happened between the event in question one and two? 4) What happen at 3:39 PM September 3, 2004? 5) What happened at 7:40 PM November 21, 2004? 6) What happened at 1:27PM December 2, 2004? 7) What happened at 12:09 PM December 12, 2004? 8) What happened at 8:37 PM December 13, 2004? 9) What happened at 7:52 PM December 26, 2004? 10) What happened at 5:18 PM December 31, 2004? 11) What happened at 11:48 PM December 31, 2004? 12) What happened at 12:00 AM January 1, 2005? 13) How long of actual time happened between the event in question 11 and 12? 14) How old is the Earth? 15) On the chart how many years are represented by one second.

1. Earth formed from planetary nebula 2.Inferred origin of life (first cells) 3. 7000 million years 4.Oldest age-dated rocks on Earth 5. Ordovician system begins 6. First sharks 7. Triassic system begins 8. First dinosaurs (Eoraptor and Saltoposuchus) 9. End of Mesozoic, probably meteor or comet impact 10. Oldest human like ancestors (hominids) 11. First modern man, Homo sapiens 12. World War II 14. estimated 4.6 billion years old 13. 937,000

15. 146 years

Part 2 - Photostory Using the information on page 2 of the handout found at [] and doing a search in Google Images, create a slide show that shows the four Eras (make a slide for each era with the times (4)) with four pictures per era (with caption and date on each slide (16)), a title page, and a reference page (find the actual source for each picture). Should have 22 slides in total. You will post the .wmv to the time section in the wiki send me an e-mail that you have posted it. Part 3 - Videos Pangea Watch these videos and write at least 5 points about what you learned in your blog. [] [] [] []