Time

Time

Go to [] and answers these questions: 1) About how long ago did the big bang take place? around 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? It continues to expand and cool to this day and we are inside of it 4) Was there really a big bang? We tend to imagine a giant explosion. Experts however say that there was no explosion 5) What light elements seem to support the Big Bang Theory? 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.

**__Questions __** 1) What is the current calendar most of the world uses / accepts? Explain who made it and why this is accepted. The **Gregorian calendar** is the internationally accepted [|civil calendar] .[|[1]][|[2]][|[3]] 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. The essential ongoing differentiating feature of the Gregorian calendar, as distinct from the Julian calendar with a leap day every four years, is that the Gregorian omits 3 leap days every 400 years. 3) List three other types of calendars used and how they set up their calendar (ex. Lunar). 1. The [|Catholic Church] maintained a tabular lunar calendar, which was primarily to calculate the date of [|Easter], and the lunar calendar required reform as well.    2. A perpetual lunar calendar was created, in the sense that 30 different arrangements (lines in the expanded table of [|epacts] ) for lunar months were created.    3. // Lunisolar calendars // these calendars aim to be both solar calendars and lunar calendars, but are more successful in tracking the seasonal cycle than the lunar cycle.    4) What is BC? Before Christ **5) What is BCE? ** BCE means Before Common Era  6) What is AD? Anno Domini or Year of our Lord referring to the year of Christ’s birth. 7) What is CE? CE is a recent term. It refers to 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? Eon:  the longest division of geological time  Epoch:  a period marked by distinctive character or reckoned from a fixed point or event   Era: period marked by distinctive character or reckoned from a fixed point or eventAge: <span style="font-family: 'Arial','sans-serif';"> how long something has existed; "it was replaced because of its age"   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">11) List three ancient calendars <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">1. <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">The earliest Egyptian calendar [ [|Ref.] ] was based on the moon's cycles, but later the Egyptians realized that the "Dog Star" in Canis Major, which we call Sirius, rose next to the sun every 365 days, about when the annual inundation of the Nile began. <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">2. <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt; line-height: 115%;">C <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">elestial 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. <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">3. The Babylonians (in today's Iraq) used a year of 12 alternating 29 day and 30 day lunar months, giving a 354 day year. In contrast, the Mayans of Central America relied not only on the Sun and Moon, but also the planet Venus, to establish 260 day and 365 day calendars.

<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">12) List two ancient clocks and how they worked. 1. <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt; line-height: 115%;">T <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">he Sumerian culture was lost without passing on its knowledge, but the Egyptians were apparently the next to formally divide their day into parts something like our hours. Their moving shadows formed a kind of sundial, enabling people to partition the day into morning and afternoon.  <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">2. Another Egyptian shadow clock or sundial, possibly the first portable timepiece, came into use around 1500 BCE. This device divided a sunlit day into 10 parts plus two "twilight hours" in the morning and evening. <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">13) What was a revolution of timekeeping? <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt; line-height: 115%;">I <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">n 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  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">14) What allows for standard more accurate clocks? <span style="font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">We have no evidence or record of the working models preceding these public clocks, which were weight-driven and regulated by a verge-and-foliot escapement. <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">15) What are time zones? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">A time zone is a region of the earth that has uniform standard time, usually referred to as the local time.  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">16) What is the prime meridian? The **Prime Meridian** is the [|meridian] (line of [|longitude] ) at which the longitude is defined to be 0°. <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii?  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Toronto: 12:00pm   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">London: 8:00pm   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Moscow: 11:00pm   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Tokyo: 6:00am   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Hawaii: 11:00am

<span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">18) What is Daylight Saving Time? Do we use this in Saskatchewan? <span style="color: #333333; font-family: 'Verdana','sans-serif'; font-size: 9pt; line-height: 115%;">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.  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">19) Is there a year zero? **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].  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">20) Are we starting a new decade in 2010 or 2011? Yes, because in 2010 we had started a new decade.   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">21) What is linear time? 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. <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">22) What is cyclical time?  <span style="color: #333333; font-family: 'Arial','sans-serif'; font-size: 10.5pt; line-height: 115%;">Today, as per modern understanding it is considered that the time progresses in a linear manner. There are many theories, which explain the nature, origin, its end and other matters related to the time.  __**Geological Time**__ Find the answers to these questions and post to wiki and e-mail answers

1) What happened at 12 AM January 1, 2004? <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">2) What happened at 4:41 PM February, 25 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Inferred origin of life (first cells) <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">3) How long of actual time happened between the event in question one and two? 7,000,000,000 years  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">4) What happen at 3:39 PM September 3, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">First multi-celled organisms (seaweed and algae) <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">5) What happened at 7:40 PM November 21, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">First fish  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">6) What happened at 1:27PM December 2, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">First sharks 7) What happened at 12:09 PM December 12, 2004? <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">8) What happened at 8:37 PM December 13, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">First dinosaurs (Eoraptor and Saltoposuchus) <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">9) What happened at 7:52 PM December 26, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">End of Mesozoic, probably meteor or comet impact  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">10) What happened at 5:18 PM December 31, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">Oldest human like ancestors (hominids) <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">11) What happened at 11:48 PM December 31, 2004? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">First modern man, Homo sapiens  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">12) What happened at 12:00 AM January 1, 2005? <span style="font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">World War II  <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt;">13) How long of actual time happened between the event in question 11 and 12? <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">937,000 years   <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt;">14) How old is the Earth? <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">The scale of geologic time is vast, currently <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt; line-height: 115%;">estimated at nearly 4.6 billion years. <span style="color: black; font-family: 'Arial','sans-serif'; font-size: 10pt; line-height: 115%;">15) On the chart how many years are represented by one second.  <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">1 second equals about 146 years.  media type="file" key="Kieran Geography slide show.wmv"
 * Earth formed from planetary nebula**
 * Triassic system begins**