1 / 13

It's About Time!

It's About Time!. Time zones = every 15° longitude. 24,000 miles. What is the circumference of the earth?. 24. How many hours in a day? How many time zones are in the world? That means each time zone is 1,000 miles or 15°. 24. The Prime Meridian is located at 0° longitude.

danielcrouse
Download Presentation

It's About Time!

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. It's About Time!

  2. Time zones = every 15° longitude 24,000 miles What is the circumference of the earth? 24 How many hours in a day? How many time zones are in the world? That means each time zone is 1,000 miles or 15° 24

  3. The Prime Meridian is located at 0° longitude. The International Date Line, located at 180° longitude, is on the opposite side of the world and is what separates one day from the next.

  4. Methods of Telling Time Reign - marked time by how long a king or queen ruled

  5. Eratosthenes • First person to use the word "geography" in Greek & came up with the system of latitude& longitude. • Measured time by Olympiads(every 4 years) for the years between Olympic games. • Downside: No set system to count months or days, which were usually measured by the moon (and each city did it differently). • Born: 276 BC in Cyrene (now Libya) • Died: 194 BC in Alexandria, Egypt

  6. Dionysius Exiguus • 6th Century monk who invented the term A.D. in A.D. 525. • A.D. = Anno Domini(Latin for “in the year of the Lord”) – this means he based the numbering system on the birth of Christ (not his death at the age of 33). Therefore, A.D. does NOT mean “after death.”

  7. Dionysius Exiguus invented A.D. based on the year Jesus was born. What about events before the birth of Christ? B.C. A.D. B.C. stands for  Before Christ

  8. B.C. and B.C.E. A.D. and C.E. B.C. Before Christ A.D. Anno Domini B.C.E. Before Common Era C.E. Common Era **B.C.E. and C.E. were created for those who didn’t want to measure time in a religious sense.**

  9. CIRCA Means… around or about, and is used when exact datesare unknown. Abbreviations for circa  c. and ca. Greek vase c. 375 B.C. Helmet from Emperor Wu Wang tomb complex (circa 1020 B.C.) Etruscan Ladies Performing a Dance (painting from a tomb ca. 500 B.C.)

  10. Decade: A period of 10 years How many decades old are you? How many decades old are your parents?

  11. Century – A period of 100 years. How many years old is this tree? In what year was Hill Country built? In which century? In what year were you born? In which century? **The 1st C.  1-100 A.D. 4 centuries! 1974! 2nd Century  101-200 A.D. 20th C.  1900s 21st C.  2000s 20th century! ’02 or ‘03? 21st century!

  12. Era – A stretch of years from a set point in history. My favorite era is the ____________ era! (i.e. Cenozoic, Mesozoic, Paleozoic, Precambrian, Premodern, Modern, Postmodern, etc.)

  13. Ancient: vs. Modern: Before the fall of Rome in 476 A.D. After the fall of Rome in 476 A.D.

More Related