Time

__Time__ __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. The pressure is thought to be so intense that finite matter is actually squished into infinite density. __3) Does the universe continue to expand?__ Yes __4) Was there really a big bang?__ Not a big "BANG", but they say that the universe just came to be. __5) What light elements seem to support the Big Bang Theory?__ 5/5 great
 * First of all, we are reasonably certain that the universe had a beginning.
 * Second, galaxies appear to be moving away from us at speeds proportional to their distance.
 * Third, if the universe was initially very, very hot as the Big Bang suggests, we should be able to find some remnant of this heat.
 * 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.
 * 22 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, also known as the Western calendar, Christian calendar. It was introduced by [|Pope Gregory XIII]. The motivation for the Gregorian reform was that the [|Julian calendar] assumes that the time between [|vernal equinoxes] is 365.25 days, when in fact it is presently almost exactly 11 minutes shorter.

__ 2) What is a leap year? __ Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100; the centurial years that are exactly divisible by 400 are still leap years. For example, the year 1900 is not a leap year; the year 2000 is a leap year.[|[7]

__ 3) List three other types of calendars used and how they set up their calendar (ex. Lunar). __
 * Chinese Calendar**- works similar to the Lunar Calendar. **Gregorian Calendar** - has 97 leap days every 400 years. **Lunar** Calendar- It differs for which day is the first day of month. Can use the moon phases calendar to figure out what day is next.

__ 4) What is BC? __ Before Christ

__ 5) What is BCE? __ Before Common Era

__ 6) What is AD? __ Anno Domini or Year of our Lord

__ 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. __ 22 periods 14000 MYA - Big Bang: Formation of the Universe 4600 MYA - Formation Earth 543 MYA - 490 MYA - Cambrian: Explosion of Life on Earth 290 MYA - 248 MYA - Permian: Largest Mass Extinction 245 MYA - 65 MYA - Mesozoic: Age of Dinosaurs 65 MYA - Cenozoic: Age of Mammals 5 MYA - 2500 BC - Stone age: The Human Era 70000 BC - 8000 BC - Ice age: Extintion 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 2012 - Future

__ 10) What is an eon, epoch, era, and age? __ An eon is a very long time. It is the longest period of geological time. Geologists subdivide an eon into eras. An epoch is longer than an era and can cover more than one lifetime.

An era is subdivided into periods, epochs, and stages. An age means millions of years.

__ 11) List three ancient calendars __ Aztec calendar stones, Egyptian calendar, and Moon Cycles

__ 12) List two ancient clocks and how they worked. __ Sun Clock- The sun made a shadow,which enabled people to partition the day into morning and afternoon. Water Clock- They were cylindrical or bowl-shaped containers designed to slowly fill with water coming in at a constant rate. Markings on the inside surfaces measured the passage of "hours" as the water level reached them.

__ 13) What was a revolution of timekeeping? __ Accurate Mechanical Clocks to Quartz Clocks

__ 14) What allows for standard more accurate clocks __? No gears or escapements to disturb their regular frequency.

__ 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? __ The prime meridian is a vertical line that marks the zero degree longitude measurement on Earth.

__ 17) If it’s 10:00 AM in Regina, what time is it in Toronto? London? Moscow? Tokyo? Hawaii? __
 * Toronto**- 11:00am
 * London**- 5:00pm
 * Moscow**-8:00
 * Tokyo**- 1:00am
 * Hawaii**- 6:00am

__ 18) What is Daylight Saving Time? Do we use this in Saskatchewan? __ Daylight saving time is advancing clocks during the summertime so evenings have more daylight and day has less. No

__ 19) Is there a year zero? __ No, because the world started on Jan 1st 1AD

__ 20) Are we starting a new decade in 2010 or 2011? __ 2010 is a decade every ten years

__ 21) What is linear time? __ Having a beginning but going into forever

__ 22) What is cyclical time? __ It's a wheel of time it represents the repeating of ages 22/22 great 13308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685 __ Dipity: __ http://www.dipity.com/CarlieEricaHaley/History-of-the-Earth/ 13308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685133089768513308976851330897685
 * When the earth was made, rocks collided, and the heat form that is what fuels volcanoes today
 * the landscape continues to change on earth
 * our landscape is one of the most unique in the universe
 * there is 4 eras
 * The earth shifted a LOT
 * later in the future, the earth will come together into one big "island"
 * all the continents fit together like a puzzle
 * oceans are old as the earth itself
 * they found evidence about plate tectonics from the ocean
 * they found patterns of volcanic mounds and "stitches" on the ocean floor as evidence of shifting continents

How does the middle of the earth stay hot? How can the sun be hot, and fiery, when fire needs oxygen to survive? How did mammals live through the asteroid blast, yet dinosaurs didn't?

great where is your statement 47/48