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Show J4 TheSalt Lake Tribune SUNDAY Sunday, January 24, 1999 Especially Bic Big ese Geographynodes id to ve key geints to remember about preety teeeteer ea tener sage rae peste SteRegRareite See ae maepeti tye fensCHnBOONALMaleChockspopes rR Foe McMeaPublishing ® e ] 8z 3 3 : * zg © 1999 Universal Press Syndicate By BETTY DEBNAM = Tanta tiPom oy ooanO Re UeeaIw eras A Kid’s Guide to Timekeeping S Once Upon a Time... , 2 A6 Sen.es 4 3 60... ee a a| & s * le . by Sun, moon and stars Fire The pendulum,late 1600s ~ Ancient people looked to the sky to | @_s — Theancient Chinese measuredtime by burning a damprope that was knottedat regular intervals. Later, tell time. The sun told the days. The people noted howlongit took a candle moontold the months. The ancient or theoil in a lampto burn. boa the day into 24 The hourglass, 1300s z Sundials : rocks cast shadows 47° that moved from side to side as the sun moved from east to west. Theancient Egyptians i I | Y tatian scientist i Galileo in 1637. ® | An English clockmaker, John Harrison, invented thefirst “ct Theyare even used in kitchens today. We still use them as egg timers, clock that worked at sea, in 1735.It took Harrison joo8 to complete a Mechanical clocks, 1300s i } j 2 I % 28 5 i ” or time pieces to sea. The ancient Romans and Greeks used Thefirst mechanical clocks ran by using weights to drive the wheels that made the weerea Co a5 at MIGHTY J ke FUNNY’S Mini © eS would be accurate on therolling seas. . _ Shipsuse time to help locate exactly wherethey are. %» Dt 4 This is the third aries to another. — os 2H. +23 eehie Gocetat dial |= = Waterdripped from onebowl —=|/-=== i Sea clocks, 1700s Sandflows at an even rate from one glass bulb to another. For manyyears, sailors carried these People noticed that trees and probably werethe first to Thefirst accurate clocks law were invented by a a Dutchman,Christian Huygens. These clocks were controlled by a pendulum. Pendulums of the same length take the same time to — each swing. \ «This discovery was (3 »’ made bythe famous it ies about an oAV AF ELE? ee Q: Whydo firemen wear red suspenders? : A:To hold their pants uy both aeby Sherry M. Hahn) Q: Whatdo you say to an 800-pound ‘ eels who Sear sandwich? INnjo wich, sir! centinbyMichael Walsh) Lae 1000Uriverea! Prove Byrdisto ‘wor The Ml Page by Baty Debnam © 1009 Uriveraal ProseBycowt Bringing me Spee-Date Teacher’s Guide © 1009 Univeral Pres Pag sh, Foruse by teachers and parents at home and at school. For use with issue: Once Upon a Time... Main idea: This issueis about types Atomic clocks, 1949 Electric clocks, early 1800s of clocks. Thefollowing is alist of activities to Atomic clocks are the most accurate. 2 with this issue. They are listed inorderof difficulty, withtheeasier preeader assignmentslisted first. Most of theactivities are for younger readers. Ask § thechildren todothe following } 1. Findthe following pictures in this issue: a sundial, anelectric clock, a ship, a watch, a candle, an hourg! i 2c umberof clocks you haveat home. Are they plugged in or In which roomsarethey placed? How manyhavealarms? watch or clock face 4 Lookthrough your newspaperfor ads for watches or clocks. Whichdo you These clocks will not lose or gain a second in 370,000 years! Atomicclocks are based on thevibrations of the cesium atom. Cesium atoms vibrate at 3 3 the rate of 9,192,631,770 times each second, ® j like best? Why? 5. Discuss the following: Why are clocks so important? What would it belike to i live without a watchor clock? Do youwear a watch?Ifso,is it run by a battery or & doyou haye to wind it? Whendoyou look at it? Does tell you anything besides the time? Do you use an alarmclock to wakeupin the morning? é 6. If you know a young child who does not know how totell time, teach him or ; er 7 Findthe following wordsin this issue: ancient, damp, portable, current, atomic. Defineand makeup a new sentencefor each one. 5 ‘Wom The Mir Pape by Betty Debnam © 1000 Universal Press Syndicate anus a Batteries were used to power the first electric clocks. Today, we often plug theclock into the electric current thatflowsinto our home. Quartz clocks, 1929 UZ The offical time in the United States is kept by the U.S. Naval Observatory in Washington,D.C. On the grounds, the Observatory has about30 cesium ‘aeCLOCKS *°" Wordsthat remind usof types of clocks are hidden in the block below. Some words are hidden backward or diagonally. Seeif you can find: ATOMIC, ELECTRIC, MECHANICAL, HAND, PENDULUM, QUARTZ, DIGITAL, SECOND, YEAR, MONTH, MASTER, CLOCK, ZONES, TIME, READ, WATER, HOURS, ow CIiIMOTAEZONESMBD MCWOQYHLGHPHAXi “ FOPAZUKOEQYASBG GQNBTNAVUCZNTTI NUSTJERRCRTDEIT (% DAERHKRSTDSRRMA atomic clocks and 10 otherclocks that steera single masterclock. Atomic clocks aboard 24 satellites } 4 : Quartz is a mineral that vibrates | 32,768 times a second whenanelectric j current is passed throughit. Today, mostclocks have a quartz crysta Manyaredigital, or use numbers insteadofa clock face. neeee tskeepx nations accurate, too. — Seea eeeaame is building that has telescopes for Visit our Web site at: observi www. thasun,moon end “ erepsenng Taking your own sweettime (with you) Balintbet Electric-powered watches, 1957 PENDULUMLZVEIEL YEARNWDNOCESFCO KCOLCLACINAHCEM ‘wor The Miri Page by Batty Ontram© 1900 Universal Prose Syndicate Mini Spy... <¢@? Mini Spy andher classmatesaretaking a timedtest. Seeif youcanfind * kite * apple * elephant’s head * bread loaf * peanut * letter T * bandage So ai: AaireaSsf i * ruler * letter E * pencil * letter I * question mark * bird * olive * letter A * exclamation mark * bell People learned to make them smaller and even wore them as rings, necklaces For hundreds of years, people did not haveclocks oftheir own. They depended on the public clocks on tall buildings. Today, most people have clocks — and watches. andearrings For manyyears mencarried their watchesin their pockets. They were attached to the belt with a chain, Thefirst watches, 1500 a Aeee See? ; Lunch. CS Mt large and hung doit. During World WarI, they Thefirst watches were froma belt around the Rs Women were the among thefirst to wear watches around their wrists. At first men thought this was the sissy wayto changed their Electric-powered watches were powered by tiny batteries, They had a tiny tuning fork to keep the watch running without winding. Digital watches,'1980s Today's digital watches contain a battery, a tiny computer and a quartz crystal. The Mini Page thanks Geoff Chester, public relations department, U.8. Naval Observatory; minds. Soldiers found wristwatches much easierto read. ' uf i Wh | page wa nenneanetieestserieniemseseeesusmmsions “ai 1”rine = To do:= Make up a story about time and Next wook, read all about a big eslobration '. one of the photos you see. honoring George Washington. |
