time

__**TIME**__ __**Big Bang Theory Questions**__ it happened about 13.7 million years ago Black holes are areas of intense gravitational pressure. It continues to expand and cool to this day and we are inside of it. Experts however say that there was no explosion; there was (and continues to be) an expansion. The abundance of the "light elements" Hydrogen and Helium found in the observable universe are thought to support the Big Bang.
 * 1. How long ago did the big bang take place?**
 * 2.What is a black hole?**
 * 3.Does the universe continue to expand?**
 * 4.Was there really a big bang?**
 * 5.What light elements seem to support the Big Bang Theory?**

__**Time Keeps on Slippin'**__ The Gregorian calendar, also known as the Western calendar, or Christian calendar, is the internationally accepted civil calander It was introduced by Pope Gregory XIII, after whom the calendar was named.
 * 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?**

Today, scientists need only add leap seconds every few years to the clock in order to keep the calendar matching the tropical year.
gregorian western christian before christ
 * 3) List three other types of calendars used and how they set up their calendar (ex. Lunar).**
 * 4) What is BC?**

before common era
 * 5) What is BCE?**

Anno Domini year of our lord reffering to the year of christ's birth
 * 6) What is AD?**

common era million years ago 29 periods, starting with the big bang:14000MYA,formation of the earth:4600MYA, cambrian 543 MYA-590MYA,permian 290 MYA-248 MYA, mesozoic 245 MYA- 65 MYA,cenozoic 65 MYA,stone age 5 MYA- 2500 BC,stone age 70000 BC- 8000 BC,neolithic 9000 BC- 4500 BC,bronze age 3200 BC- 1200 BC,iron age1200 BC- 332 BC, hellenistic 332 BC- 63 BC,roman 63 BC- 476,byzantine 330- 1453, middle ages 476- 1350, renaissance1350- 1600,reformation 1500- 1600,enlightenment 1600- 1800, industral revolution 1750- 1900, 20th century 1900- 2000, 21st century 2000- 2099, future 2009- **10), epoch, era, and age?** **11) List three ancient calendars** gregorian western christian **12) List two ancient clocks and how they worked.** **13) What was a revolution of timekeeping?** **14) What allows for standard more accurate clocks?** A **time zone** is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates (for example, the sun being at its highest point every day around noon), different places on the Earth need to have different clock times. Time zones have been used in modern times so similarly situated cities can keep exactly the same time, for simplicity and ease of communication. **16) What is the prime meridian?** the vertical line that splits the earth into hemispheres the practice of advancing clocks so that evenings have moredaylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. no we do not use this in saskatchewan.
 * 7) What is CE?**
 * 8) What is MYA?**
 * 9) According to the timeline site how many periods of when are there and list time.**
 * 15) What are time zones?**
 * 17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii?**
 * it is 11 AM in Toronto,moscow is 8PM, london is 4PM,it is 1AM in tokyo,it is 6AM in hawaii.**
 * 18) What is Daylight Saving Time? Do we use this in Saskatchewan?**
 * 19) Is there a year zero?**
 * no there is not**
 * 20) Are we starting a new decade in 2010 or 2011?**
 * in 2011**
 * 21) What is linear time?**
 * linear goes in a straight line**
 * 22) What is cyclical time?**
 * it goes in a circle**


 * 17/22**