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Time. How do we measure time? When was 3,000,000 years ago? What is a timeline?. Time. Units of Measurement. Epoch, Period, Era, Eon. Time. Geological Time Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Tertiary. Cultural Time
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Time How do we measure time? When was 3,000,000 years ago? What is a timeline?
Time Units of Measurement Epoch, Period, Era, Eon
Time Geological Time Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Tertiary Cultural Time Pre-history Old Stone Age New Stone Age Ancient Classical Middle Ages Modern Industrial
Time Technological Time
Time January 1, 2000
Time Why????
Time • Dionysius Exiguus “Dennis the Little (Humble)” 470-544 • Future dates on which Easter would fall • "the consulship of Probus Junior [Flavius Probus]“ • "since the incarnation [conception] of our Lord Jesus Christ“ • 25 March 1 AD • 'Anno Domini Nostri Iesu Christi' ('In the Year of Our Lord Jesus Christ')
Time B. C. = B. C. E. A. D. = C. E.
Time • Timeline • A representation or exhibit • key events • within a particular historical period, • often consisting of illustrative visual material • accompanied by written commentary, • arranged chronologically.
Time most recent oldest end point end point
Time 300 200 100 0 100 200 300 BC/BCE AD
Time 11,000 BC 10,000 BC Neolithic Revolution 5000 BC 3100 BC Upper and Lower Egypt United 2670 BC First Dynasty of Ur 2500 BC Mohenjo-Daro 1000 BC 2000 BC Minoans and Myceneans 1500 BC Shang Dynasty 0 753 BC Founding of Rome 476 AD Fall of the Roman Empire 500 AD 1066 AD Norman Invasion of England 1000 AD 1215 AD Signing of the Magna Carta 1300 AD
Time Centuries = 100 years 300 200 100 0 100 200 300 BC/BCE AD
Time Centuries = 100 years 300 200 100 0 100 200 300 BC/BCE AD First century BC Second century AD
Time 160 BC Which century BC? 300 200 100 0 100 200 300 3rd 2nd 1st BC/BCE AD 160 BC = 2nd century BC
Time 280 AD Which century AD? 300 200 100 0 100 200 300 1st 2nd 3rd BC/BCE AD 280 AD = 3rd century AD
Time Rule for aligning dates to the correct century Add 1 to the 100’s number 160 +1 2 2nd century 280 +1 3 3rd century 1492 +1 15 15th century 2007 +1 21 21 century
Time 3rd century BC Which years BC? 300 200 100 0 100 200 300 3rd 2nd 1st BC/BCE AD 3rd century BC = Years 201 - 300 BC
Time Rule for aligning centuries with the correct date Subtract 1 from the 100’s and add the years 01 through 00
Time The Roman Empire fell in the fifth century AD. The Magna Carta was signed in the thirteenth century AD. 501 -1 4 401 to 500 years 1301 -1 12 1201 to 1300 years