Time

= The Big Bang Theory =

Go to http://www.big-bang-theory.com/ and answers these questions:
1) About how long ago did the big bang take place? The big bang took 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? Yes, the universe continues to expand.

4) Was there really a big bang? Experts say there was no explosion, but there was, and still is an expansion.

5) What light elements seem to support the Big Bang Theory?The abundance of the "light elements" Hydrogen and Helium found in the observable universe are thought to support the Big Bang model of origins.

1) What is the current calendar most of the world uses /accepts? Explain who made it and why this is accepted.
The internationally accepted civil calendar is the Gregorian calendar and it was introduced by Pope Gregory XIII.

2) What is a leap year? Leap years add a 29th day to February, which normally has 28 days. This happens every four years.

3) List three other types of calendars used and how they set up their calendar (ex. Lunar). Three other calendars are The Lunar calendar, Julian calendar, and Roman calendar. The Roman calendar starts on March 1st, the Julian calendar starts on January 1st, and the Lunar calendar which is used by the Catholic Church to calculate the date of Easter.

4) What is BC? BC means Before Christ.

5) What is BCE? BCE means Before Common Era.

6) What is AD? AD means Anno Domini.

7) What is CE? CE is a recent term, and it refers to Before Common Era.

8) What is MYA? MYA means a Million Years Ago.

9) According to the timeline site how many periods of when are there and list time. There are 21 periods of time, and they range from 14000 MYA till the future.

10) What is an eon, epoch, era, and age? Eon is longest division in geological time.  Epoch is a period marked by a character.  Era is a major division of geological time that is a subdivision of a period.  Age is how long something has exsisted.

11) List three ancient calendars The sun, moon and planets, these have provided us for a reference for mesuring the passage of time throughout our existance.

12) List two ancient clocks and how they worked. The sun clock other known as a sundial. This device divided a sunlit day into 10 parts plus two "twilight hours" in the morning and evening.  The water clock, they used stone vessels with sloping sides that allowed the water to drip, and as the water dipped the water measured the passage of "hours" as the water level reached them.

13) What was a revolution of timekeeping? Accurate mechanical clocks.

14) What allows for standard more accurate clocks? Atoms.

15) What are time zones? A time zone is a region on Earth that has a uniform, legally mandated standard time, usually referred to as the local time.

16) What is the prime meridian? The Prime Meridian is the meridian (line of longitude) where the longitude is defined to be 0°.

17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii? Toronto-12:00p.m.  London-5:00p.m.  Moscow-8:00p.m.  Tokyo-1:00a.m.  Hawaii-6:00a.m.

18) What is Daylight Saving Time? Do we use this in Saskatchewan? The change to Daylight Saving Time allows us to use less energy in lighting our homes by taking advantage of the longer and later daylight hours. We do not use this in Saskatchewan.

19) Is there a year zero? No, there is no year zero.

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

21) What is linear time? Linear time is a concept whereby time is seen sequentially, as a series of events that are leading toward something.

22) What is cyclical time? Cyclical time sees time as circular, not necessarily leading towards something, but repeating itself in a cycle of events.

Geological Time Activities
1) What happened at 12 AM January 1, 2004? Earth formed from planetary nebula

2) What happened at 4:41 PM February, 25 2004? Inferred origin of life (first cells)

3) How long of actual time happened between the events in question one and two? 700 million

4) What happened at 3:39 PM September 3, 2004? First multi-celled organisms (seaweed and algae)

5) What happened at 7:40 PM November 21, 2004? Ordovician system begins

6) What happened at 1:27PM December 2, 2004? First sharks

7) What happened at 12:09 PM December 12, 2004? End of Paleozoic, 96% of all life on Earth perishes

8) What happened at 8:37 PM December 13, 2004? First dinosaurs (Eoraptor and Saltoposuchus)

9) What happened at 7:52 PM December 26, 2004? End of Mesozoic, probably meteor or comet impact

10) What happened at 5:18 PM December 31, 2004? Oldest human like ancestors (hominids)

11) What happened at 11:48 PM December 31, 2004? First modern man, Homo sapiens

12) What happened at 12:00 AM January 1, 2005? World War II

13) How long of actual time happened between the events in question 11 and 12? 937 million years

14) How old is the Earth? Approximately 4.6 billion years ago.

15) On the chart how many years are represented by one second? 146 years is represented by a second.