time

Part 1: Big Bang

1) About how long ago did the big bang take place? It took place back to the very beginning of the universe, around 13.7 billion years ago. 2) What is a black hole? Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that finite matter is actually squished into infinite density (a mathematical concept which truly boggles the mind). These zones of infinite density are called "singularities." 3) Does the universe continue to expand? Yes, it continues to expand and cool to this day. 4) Was there really a big bang? No, not literally.Experts however say that there was no explosion; there was (and continues to be) an expansion (small balloon expanding to the size of our current universe). 5) What light elements seem to support the Big Bang Theory? Hydrogen and Helium found in the observable universe.

Part 2: 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. The Gregorian calender is the most used calender (inventor; Pope Gregory). 2) What is a leap year?A leap year accurs every 4 years, making February have a 29th day. 3) List three other types of calendars used and how they set up their calendar (ex. Lunar).1.The Muslim calendar it is used in Islamic countries, most of them are in or near Earths torrid zone. Thats where seasonal variation of climate is slight or doesnt exist and the climate is usually hot. 2.Luni-solar calendar, it is 12 months long, but a 13th month is inserted every few years to keep the calendar in phase with seasons. The third type is the solar calendar, which is based on the length of the year. The calendar we use today is a solar calendar and it evolved from the ancient Roman calendar which passed through the stage of being a luni-solar calendar. 3.Tzolkin Calendar, is the sacred moon calendar of the Mayans. It connects the energy of heaven with earth so that what occurs above is reflected below. The calendar is composed of 20 day signs in combination with the numbers 1 to 13, creating a 260-day cycle. The 20-day signs correspond to one month of the Long Count Calendar and the 13 numbers correspond to the amount of days it takes the moon to go from new to full, and then another 13 to go from full to new. The 26-day moon cycle is the time it takes for us to actually "see" the start of the full moon, which then can be viewed for three more nights. 4) What is BC?The meaning of BC is Before Christ. 5) What is BCE?BCE means Before Common Era.

6) What is AD? AD stands for 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, 4600 MYA-Formation Earth, **-** - CAMBRIAN,  **-** , 2**45 - 65 MYA-**: Age of the Dinosaurs,  **-** -, **70000 BC** **-** **8000 BC-**Ice Age, 8)**9000 BC** **-** **4500 BC-**First Settlements, **3200 BC** **-** **1200 BC-**3rd Millennium BC, **1200 BC** **-** **332 BC-**2nd Millennium BC, **332 BC** **-** **63 BC-**4th Century BC, **63 BC** **-** **476-**1st Century BC, 13)**330** **-** **1453-**Byzantine, **476** **-** **1350-**Middle Ages, **1350** **-** **1600-**Renaissance,**1500** **-** **1600-**Reformation, **1600** **-** **1800-**Enlightenment, **1750** **-** **1900-**Industrial Age, 18)**1900** **-** **2000-**20th Century, **2000** **-** **2099-**21st Century, **2009**-Future,

10) What is an eon, epoch, era, and age Eon- is the US English variant of the traditional aeon, which means "age" or "forever". Epoch-A particular period of history, especially one considered remarkable or noteworthy. A notable event that marks the beginning of such a period. Era-a period of time made distinctive by a significant development, feature, event, or personality Age-the length of time that somebody or something has existed,

11) List three ancient calendars 1. Babylion calendar 2. Egyptian calendar 3.Maya calendar 12) List two ancient clocks and how they worked. 1.A **water clock** or **clepsydra** ( κλέπτειν //kleptein//, 'to steal'; ὕ δωρ //hudor//, 'water') is any in which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel where the amount is then measured. 2.Sundial; tells the time depending on where the sun is

13) What was a revolution of timekeeping? In Europe during most of the Middle Ages (roughly 500 CE to 1500 CE), technological advancement virtually ceased. Sundial styles evolved, but didn't move far from ancient Egyptian principles. During these times, simple sundials placed above doorways were used to identify midday and four "tides" (important times or periods) of the sunlit day. By the 10th century, several types of pocket sundials were used. [Accurate machenical clock].

14) What allows for standard more accurate clocks? For more accuratsy in the standard/atomic clocks is the cooling and heating of the atoms.

15) What are time zones? Time Zones are a geographical world globe division of 15o each, starting at Greenwich, in England, created to help people know what time is it now in another parts of the world.There are 24 time zones, twelve on the western hemisphere aswell as the eastern.

16) What is the prime meridian? The **Prime Meridian** is the meridian (line of longitude) at which the longitude is defined to be 0°. East - west 17) If it’s 10:00 AM in Regina, what time is it in Toronto?12pm London?5pm Moscow?8pm Tokyo?1am tom. Hawaii? 6am

18) What is Daylight Saving Time? Do we use this in Saskatchewan? Every Spring we move our clocks one hour ahead and "lose" an hour during the night and each Fall we move our clocks back one hour and "gain" an extra hour.**Unlike most provinces in Canada, Daylight Saving Time is not observed in most of Saskatchewan.** NB Areas around (on the  border) are in the **Mountain Time Zone** (GMT-7) and adopt Daylight-Saving Time.

19) Is there a year zero? "**Year zero**" does not exist in the widely used or in its predecessor, the . Under those systems, the year  is followed by . However, there is a year zero in  (where it coincides with the Julian year 1 BC) and in  (where it coincides with the Gregorian year 1 BC) as well as in all  and.

20) Are we starting a new decade in 2010 or 2011? Technically we've never had a 'year 0', so 2011 is the start of a new decade.

21) What is linear time? Forward 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.

22) What is cyclical time? Repeating