time

time

Big Bang

1) About how long ago did the big bang take place? 13.7 billion years ago 2) What is a black hole? Black holes are areas of intense gravitational pressure. 3) Does the universe continue to expand? expanded and cooled, going from very, very small and very, very hot, to the size and temperature of our current universe. 4) Was there really a big bang? No because we tend to imagine a giant explosion. Experts however say that there was no explosion; there was (and continues to be) an expansion. 5) What light elements seem to support the Big Bang Theory? Hydrogen and Helium found in the observable universe are thought to support the Big Bang model of origins.

Times slipping

1) What is the current calendar most of the world uses / accepts? Explain who made it and why this is accepted. Gregorian,

2) What is a leap year? When you miss one day every four years in march 3) List three other types of calendars used and how they set up their calendar (ex. Lunar). Julian calendar, lunar calendar, Chinese calendar.

4) What is BC? Before Christ

5) What is BCE? Before Common Era

6) What is AD? Anno Domini

7) What is CE? Common Era

8) What is MYA? Million years ago

9) According to the timeline site how many periods of when are there and list time. 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) What is an eon, epoch, era, and age? 11) List three ancient calendars stone hedge, Roman calendar, ancient Mayas

12) List two ancient clocks and how they worked. Water clock, clepsydra

13) What was a revolution of timekeeping? Making a clocks 14) What allows for standard more accurate clocks? 4.6 years 15) What are time zones? Given a 24 hour day and 360 degrees of longitude around the earth, it is obvious that the world's 24 time zones have to be 15 degrees wide, on average. The individual zone boundaries are not straight, however, because they have been adjusted for the convenience and desires of local populations.

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? 12:00pm, 5:00pm, 8:00pm, 1:00am, 6:00am 18) What is Daylight Saving Time? Do we use this in Saskatchewan? change the clock, no we don’t use this.

19) Is there a year zero? No 20) Are we starting a new decade in 2010 or 2011? 2011

21) What is linear time? you start at 1 point and keep going forward 22) What is cyclical time?