MEASURING TIME

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MEASURING TIME
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Eons billions of years long.Eras eons are
divided into.Periods eras are divided
into.Epoch the smallest division of geological
time.
PERIODS OF HISTORY
Ages the time that humans have spent on Earth
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PERIODS OF HISTORY
Stone Age the longest human age, probably began
around 2.5 million years ago. - Humans used
stones as tools.
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PERIODS OF HISTORY
Bronze age started around 5,000 years ago.
People were living in Mesopotamia (now Iraq). -
Humans discovered how to make bronze tools, from
a combination of copper and tin.
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PERIODS OF HISTORY
Iron age People in Asia Minor (now Turkey)
discovered iron. - We are dependent on iron
today.
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PERIODS OF HISTORY
Middle Age came between 476 C.E. and 1500 C.E.
The Renaissance was a period of growth in art
and literature. It was during the Middle Ages.

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PERIODS OF HISTORY
Industrial Age refers to the time around 1750
to the present. The steam engine, the assembly
line, and modern transportation brought people
from farms to cities.
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TIME LINES
Time Line - show how closely or how far apart
time events happened.
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TIME LINES
Multiple tiers helps you see two or more series
of events that are related.
America Celebrates Labor Day
9/4/06
Crocodile Hunter dies after being stung by
poisonous stingray barb
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Century 100 year span between the years ex
1700s, 1800s, 1900s
CENTURIES MILLENIA
Millenia 1000 year span between the years ex
0 1000, 1000 - 2000
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The designations BCE and CE are simply a
different way to write the traditional BC and AD.
CENTURIES MILLENIA
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The basis of our modern calendar was developed by
Christian monks in the Middle Ages who decided to
begin numbering years with the birth of Christ,
and designate that year "0.
CENTURIES MILLENIA
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Years following year 0 were designated AD, for
the Latin Anno Domini, "in the year of the Lord."
Years counting backward before year 0 came to be
designated BC, before Christ.
CENTURIES MILLENIA
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The designations BCE, Before the Common Era, and
CE, the Common Era, were adopted in order to
retain a long established way of counting years.
CENTURIES MILLENIA
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BC BCEAD CE
CENTURIES MILLENIA
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Cause and Effect - An earlier event causes
another event to occur, and we can say that the
later event is one of the effects of the earlier
event.
RELATIONSHIPS BETWEEN EVENTS