Time

1) About how long ago did the big bang take place? Around 13.7 billion years ago.

2) What is a black hole? A black hole is an area 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? Hydrogen and Helium found in the observable universe are thought to support the Big Bang model of origins.

__**TIME 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 most common calendar used. Pope Gregory XIII created the calendar in February, 24th, 1582. The calendar is also known as the Western calendar and the Christian calendar.

** 2) What is a leap year? ** A leap year is when a month has an extra day. Ex) February in a leap year has 29 days, instead of usually having only 28. Therefore, there would be 366 days in a year, not 365.

** 3) List three other types of calendars used and how they set up their calendar (ex. Lunar). ** ** Julian Calendar: ** It is introduced by Julius Caesar, was first used in 45 BC. The calendar had 365 days in a year  comprising of 12 months. Every fourth year was celebrated as a leap year with a day added to February.  ** Gregorian Calendar: ** T he most widely used calendar the world over, is named after Pope Gregory XIII who had sanctioned this type of calendar on February 24, 1582. Years in the calendar are numbered from the year Jesus Christ was born.   ** Hindu calendar: ** Calendar starts on Baisakhi, which falls on April 13, marking the beginning of the harvest season. There are 12 lunar months and every month begins with the occurrence of a new moon before sunrise. There are around 29 to 30 days in a lunar month as against 30 to 31 days of Solar Calendar.

** 4) What is BC? ** <span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">BC= Before Christ. It is an abbreviation.

** 5) What is BCE? ** BCE= Before Common Era

** 6) What is AD? ** <span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">AD= Anno Domini or year of our Lord referring to Christ’s birth. It is an abbreviation.

** 7) What is CE? ** <span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">CE= Common Era. It is an abbreviation.

** 8) What is MYA? ** <span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">MYA= Million Years Ago

** 9) According to the timeline site how many periods of when are there and list time. ** <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">1. The Big Bang: 14000 MYA <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">2. Formation of Earth: 4600 MYA <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">3. Cambrian: 543-490 MYA <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">4. Permian: 290-248 MYA <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">5. Mesozoic: 245-65 MYA <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">6. Stone Age: 5 MYA – 2500 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">7. Ice Age: 70 000 BC – 8000 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">8. Neolithic: 9000 BC – 4500 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">9. Bronze Age: 3200-1200 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">10. Iron Age: 1200-332 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">11. Hellenistic Period: 332-63 BC <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">12. Roman Period: 63 BC- 476 <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">13. Byzantine Period: 330 -1453 <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">14. Middle Ages: 476 - 1350 <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">15. Renaissance: 1350 – 1600

** 10) What is an eon, epoch, era, and age? ** ** eon: ** ** longest unit of geologic time: ** **a** division of geologic time comprising two or more eras   ** epoch: ** a moment in time chosen as the origin of a particular era   ** 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, usually expressed in years

** 11) List three ancient calendars ** <span style="background: white; color: black; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">Mayan calendar, Ancient Roman, Aztec calenders

** 12) List two ancient clocks and how they worked. ** ** Sun clocks- ** The moving shadows formed a kind of sundial, enabling people to partition the day into morning and afternoon.    ** Water clocks- ** stone vessels with sloping sides that allowed water to drip at a nearly constant rate from a small hole near the bottom.

<span style="background: white; color: black; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">Mechanical clocks.
 * 13) What was a revolution of timekeeping? **

<span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">Atoms.
 * 14) What allows for standard more accurate clocks? **

** 15) What are time zones? ** <span style="background: white; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">A time zone is a region on Earth more or less bounded by lines of longitude that has a uniform, legally mandated standard time, usually referred to as the local time

** 16) What is the prime meridian? ** <span style="background: white; color: black; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">The zero ** meridian ** (0°), used as a reference line from which longitude east and west is measured. It passes through Greenwich, England.

** 17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii? ** ** Toronto: ** 11:00 AM   ** London: ** 4:00 PM   ** Moscow: ** 7:00 PM   ** Tokyo: ** 1:00 AM   ** Hawaii: ** 6:00 AM

<span style="background: white; color: #333333; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">During late winter 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. We use this in Saskatchewan.
 * 18) What is Daylight Saving Time? Do we use this in Saskatchewan? **

** 19) Is there a year zero? ** <span style="background: white; color: #2a2a2a; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">Year zero does not exist in the Gregorian calendar or in the Julian calendar. Under those systems, the year 1 BC is followed by AD 1. However, there is a year zero in astronomical year numbering (where it coincides with the Julian year 1 BC).

** 20) Are we starting a new decade in 2010 or 2011? ** <span style="font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">2011, because a decade is every 10 years but there isn't a year 0, so 1=10= 11.

** 21) What is linear time? ** <span style="background: white; color: #2a2a2a; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt 0.5in;">Linear time is a concept where time is seen sequentially, as a series of events that are leading toward something: beginning, and an end.

** 22) What is cyclical time? ** <span style="background: white; color: #2a2a2a; font-family: 'Comic Sans MS'; font-size: 10pt; line-height: normal; margin: 0in 0in 10pt; text-indent: 0.5in;">Time that flows in a cycle; seasons, day and night, etc.

Bonus Question **In What Steve Miller song does time ‘keep slippin’ into the future’?** è Fly like an Eagle – Steve Miller

Ashton and Sarah's geological timeline

Sara Sarah and Ashton's geological timeline

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What I learned:

- The first cells on earth were plant cells. (Algae) - Mesozoic means "age of the dinosaurs". - How to create a timeline on the internet.

<span style="font-family: 'Comic Sans MS',cursive; line-height: normal; margin: 0in 0in 10pt 0.5in; text-indent: -0.25in;"><-- Sarah and Ashton