Time

Time 1) 13.7 billion years ago. 2)Black holes are areas of intense gravitational pressure. 3)Yes because galaxies are slowly moving away from eachother. 4)I think there was not a big bang but i do thing someting simailier happend. 5)

4/5

__Big Bang Questions:__ Answers in red

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? A leap year is a year with one additional day

3) List three other types of calendars used and how they set up their calendar (ex. Lunar).

4) What is BC? Before Christ

5) What is BCE? Before Common era

6) What is AD?  Anno Dommini

7) What is CE? Common era

8) What is MYA? Millions of years ago

9) According to the timeline site how many periods of when are there and list time. 22

10) What is an eon, epoch, era, and age?

11) List three ancient calendars? Mayan, Roman, Jewish

12) List two ancient clocks and how they worked. __Sun clock-__ telling the time by were the sun was in the sky.   Water clock- Similar to a hour class but used with water inplace of sand.   13) What was a revolution of timekeeping?

14) What allows for standard more accurate clocks? atoms

15) What are time zones? A ** time zone ** is a region on Earth for legal, commercial, and social purposes.

16) What is the prime meridian? The line of longitude located at 0*

17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii? 11am, 4pm, 6pm, 11pm, 6am

18) What is Daylight Saving Time? Do we use this in Saskatchewan? No

19) Is there a year zero? No

20) Are we starting a new decade in 2010 or 2011? 2011

21) What is linear time?

22) What is cyclical time?