Time

The Big Bang Theory
1) About how long ago did the big bang take place? The big bang is thought to have taken place 13.7 billion years ago. 2) What is a black hole? Black holes are areas with intense gravitional pressure. 3) Does the universe continue to expand? Yes the universe continues to expand. 4) Was there really a big bang? Many scientists do believe so. 5) What light elements seem to support the Big Bang theory? Two light elements that support the Big Bang theory are Hydrogen.

1) What is the current calendar most of the world uses / accepts? Explain who made it and why this is accepted.

The Gregorian Calendar which was introduced by Pope Gregory XIII. The reason for this new calendar to be was because the Julian Calendar assumes that the time between vernal equinoxes (The time it takes for the Earth to fully rotate around the sun) is 365.25 days, and it is off by 11 minutes.

2) What is a leap year?

Every year that is exactly divisible by four is a leap year, excluding the years that are exactly divisible by one-hundred; however, years divisible by four-hundred are also considered leap years.

3) List three other types of calendars used and how they set up their calendar (ex. Lunar).
 * Lunar-The lunar calendar goes by the cycles of the moon
 * Julian-Containing 365 days and every 4 years an extra day.
 * Lunisolar-Track the cycle of the seasons and the cycles of the moon

4) What is BC?

Before Christ

5) What is BCE?

Before Common Era

6) What is AD?

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.
 * 21 periods of time
 * 14000 MYA - Big Bang: Formation of the Universe
 * 4600 MYA - Formation of the Earth
 * 543 - 490 MYA - Cambrian: Explosion of life on Earth
 * 290 - 248 MYA - Permian: Largest Mass Extinction
 * 245 - 65 MYA - Mesozoic: age of the Dinosaurs
 * 5 MYA - 2500 BC - Stone Age: The Human Era
 * 70000 BC - 8000 BC - Ice Age: Extinction of Large Mammals
 * 9000 BC - 4500 BC - Neolithic:First Permanent Settlements
 * 3200 BC - 1200 BC - Bronze Age: First Pharaos
 * 1200 BC - 332 BC - Iron Age: Start of the Trojan War
 * 332 BC - 63 BC - Hellenistic Period
 * 63 BC - 476 - Roman Period
 * 330 - 1453 - Byzantine Period
 * 476 - 1350 - Middle Ages
 * 1350 - 1600 - Renaissance
 * 1500 - 1600 - Reformation
 * 1600 - 1800 - Enlightenment
 * 1750 - 1900 - Industrial Revolution
 * 1900 - 2000 - 20th Century
 * 2000 - 2099 - 21st Century
 * 2011 - Future

10) What is an eon, epoch, era, and age?


 * Eon - The longest division of geological time
 * Epoch - Period
 * Era - Time period in history
 * Age - A period of time.

11) List three ancient calendars


 * Babylonian
 * Egyptian
 * Mayan

12) List two ancient clocks and how they worked.


 * Water Clock - The water clock kept time using th flow of water. Although a water clock is not as acurate as the modern clocks when it was invented it suited people fine.
 * Sundial - Sundials worked by measuring shadows at different times of the day.

13) What was a revolution of timekeeping?

Spring powered mechanisms.

14) What allows for standard more accurate clocks?

Atoms constitute a potential "pendulum" with a reproducible rate that can form the basis for more accurate clocks.

15) What are time zones?

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?

Greenwich Mean Time.

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 PM the next day
 * Hawaii - 6:00 AM

18) What is Daylight Saving Time? Do we use this in Saskatchewan?

Many countries, and sometimes just certain regions of countries, adopt daylight saving time (also known as "Summer Time") during part of the year, and no we don't use this in Saskatchewan.

19) Is there a year zero?

No

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

2011

21) What is linear time?

Linear time is where time can be measured on a stright line.

22) What is cyclical time?

Cyclical time is patterned.


 * __Geological Timeline__**

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Things I learned:


 * 1) It took over 9 billion years after the Big Bang before the Earth formed.
 * 2) Thousands of creatures have come and gone
 * 3) Humans have not been on Earth long
 * 4) The Earth has survived many different things
 * 5) Sponges were the first living organisms
 * 6) The Earth had already been around for quite a while before life started.