1589801768-c7ce8b39c4374c0d66db31cbbee41ba1 (Technology 1 student's book), страница 5

Oh, and these straps- nylon?6 -Technologyin sport 27ChecklistAssessyour progressin this unit.Tick (/) the statementswhich are true.I k n o wt h e w o r d sf o r t h e m a i nm a t e r i a l su s e di n s p o r t st e c h n o l o g yCustomeÍCa]eMaking ÍecommendationsI c a nd e s c r i b ew h a t s o m e t h i n gi sm a d eo fI c a n s p e a ka n d w r i t ea b o u tt h epropertiesof materialsM y r e a d i n ga n d l i s t e n i n ga r eg o o denoughto understandmost ofeach texti n t h i su n i tKey wordsAdjectivesaerodynamicflexibleA student of materials science is advising his friendhow to choosethe right skateboarddeck.His friend is anew skateboarder,and quite short and light.

Studytheexpressionshe uses to make recommendations.u I'dgofor awooden deck - wood is more responsivethan plastic or a composite.tt.íIfyou,re going to use it mainly on the street,/,drecommenda short board and not too wide soyou'll have more control.Your bestbet íssomething a little less than twenty centimetres.ttííTheshape is important. For a new skat er,I,dadvisesomethÍngshallow - not too deep.''Work ln pairs.Make recommendations about theskateboardwheels using this information.SizeUsed for52-55mmStreet,skate parks.Shorter andlighterrÍders.56-60mmMany uses.Street,skateparks,ramps.Tallerandheavierriders..60+mmSpeciality rides.Long boards,dirt boards,hills.HardnessUsedfor87AVeryroughsurfaces,longboards,hills.Hard and durable.Street,rough surfaces.974Street,skate parks.Smooth surfaces.1004Very hard.TopprofessÍonalsonly.NounsalloybearingscompositescorrosionlaminateperformanceplywoodpropertypvcratiowearVerbsstretchvaryN o t eh e r ea n y t h i n ga b o u th o w E n g l i s hi s u s e di n t e c h n o l o g y t h aits n e w t o y o u .2 8 U n i t5Switchon1 Work in pairs.

Look at the mechanism and answcrthe questions.iWhat is it?2 What does it do?3 Howdoes it work?4 In whÍchparts of the world is it used?5 What's it made from?ReadingTheinventor1 Work in pairs.What do you know abolrt the Ínvcntorofthe.clockwork radÍo,?Read the first paragraph of thetext and check your answers.2 Read the rest of the text and match parts a--eto thenumbered components on the diagram.a winding hanclleb steelspringc generatord gearse pulley3 Scan thc tcxt What do thc following nuinbr:rsandquantitÍcsrefelrto?a morcthantwomiilionDb(,c3Vd 30 ininr"rtcsc 199if30mA4 Conqrletc thc si:ntence,susin6;information fromthe text.1 As you turn thc hartdleon thc sirlc of thc radio,2 Wh,:'nthc spring tinwirLCs,3 As thc gcncratortur]rs,---Thc springhas cnough lrovrcLtorun thc radiofor 30míntttesbcforc5 T i r e ' e l c c t r i c s h o e ' c h a r g e s b a t l c r i e- s- -a.s2 f) Irtowhsten to the cxplanatlon by anAgricuitural EngÍneer,and check yortransr,vcrs.ln this unitO , l r ' , ' 1, ; ir .

' i ,l'i,rrí |l iO h c , n rt l , r tj e i i ,i l', irt1 r ,l r i L i rl lrirl.O l . i ; ) t t r , . l t ' :ri ;.il 'O l i ! t r l l i l i j r r ' . : lli1, - )l .iil:rl,rr,ir,t.:The clockrruorkr a clii'rI ' r c , , r cI lr, i , ' i iIl ;l ;: r t ti n , i r ' I t t o t .I L t1 9 9 1h, e l i c a t , ia l r o r tt l i ep r o b l c r no f b r i n g i n gh ea l t hinform;.riioutcrpcopl' jnnrral Afiir:a.Radio we:ithc:bestrvay but people lriri nrrelectricitl'and cor.rldn'tliaySo hfor expcnsirrcbattr.'rii::1.invcntcd a rarlio tnrhichd o c s n ' l n e c d n r a i n s p o w r r o r b a t t e r i c s .I n s t c a d ,i tconsists of a spring, gears' alld a smalI [j(]Ilír]Iat()Íd io act'rt l.i]l),Ítttt r:1iI . l .

l A llSo how dol: s his rllo.'k l^rrlilir-;ty o r rt r r r n t h c h a n d l e o n t h c s i d c t r ft l r c t . a di o . y r ntt r ni' tt i lu p a s p r l n g .i t ' s t h c s a u t e k i n d o f s t r : . ' sl 1 r ltt t t lr i : . , ' ri :r lLr ' 'saÍetybelts' It ti-rkes60 trtrrrsto wirrd tr1lthc ;piirr;fully.W h e n t h c s p r i n g s t , t r t ; i ot i i r r r i i t t dI h. r :5 ; ' r i . i , I r i i ' i lThere are thlce 1:I0sti:p rrp E;ears fit,: l;:i,t;;t,i-' ttp itI'liis a pr.rllt:y.Ptillcys ru n n'rorc rlrtictIy'Ih,rrr f,r'ar s si) t Lri ;i r , i l r , i . , ; 1 r , ,y i , i l t i r r t r ri l r r tI'.i,;.r',.iltr''\tir tiIIits,lig ( t n c r i l t ( r r i i l r i r s r ; n .

' I i t n 't itl r; l I ; l i t .- , .g c n r : t a t r : s c l c r t r i c i t , . ' ; 1r r l ; l l 1 p ; ro i 3 \ i ; i t ; t l r . - , r i.tl O n t l \T h r : s i ; r i n 1 ,1 t ; t sc i t o t t l l i r l ) . ) I / 1i i:.r ( ' r r i i r l l t i t . r r li r t [ o r 3 0n . t j i ' r t l r .bs r ' Í . l t . ' ) , r l hr rl i ' r i :i o r . v i l l r ti t i | ] ) , l r ' l Jt 1 '| Á ( ) r c t h a n t r n , om i l I i o n 1 . ] ; l i i i ' ' ."l. lI i : l l i ] i ' ]; 1 I {1. l l r t l ' l :l , l ]io v e r t h e t n , , o r l d J ' t r : v o r J t r r , , l i 'l:r : r ; r I r i r t r ' .

r r t ' , 1 ; r r t'clr::ctricshoc'.l l c l t l t t g r l ;b : r t i . r j ^ t r r ' r i ) i rr \ r . r l 1 'r3 0 U n i t5GadgetboxProfessorNegroponteof MIT (MassachusettsInstituteof Technology)in the U5Ahasdevelopeda clockworkcomputerwhichwill cost lessthan $100.Thislow-costlaptopis intendedfor childrenin the developingworld.lt uses'opensource'softwareand will connectto Wi-Finetworks.He hopesto produce150milliona year.Why doesthis computeruse'opensource'softwareand connectto Wi-Finetworks?o LanguagespotTime clauses. To show actions in quick succession,we use when:Action 1 The sprÍngstartsto unwÍnd.Action 2 The gears engage.Whenthe spring startsto unwind,the gears engage..

To show actions happening at the ,"*e tl*e*,'Actionl Youwalk.Action 2 The electric shoe charges batteries.As you walk, the electricshoe chargesbatteries.weusebeforeor after:Toput actionsin sequence,Action 1 Theradíoplaysfor 30 mÍnutes.ActÍon2 Youhaveto wind it up again.Theradioplaysfor30 minutesbeforeyou haveto winditup again.-__-@b"t!-ew2 Choosesuitabletime wordsto fill the gapsin theexplanationof a two-strokeengíne.Usethe diagramtohelp.Thetwo-strokeengine1youcan use a two-strokeengÍne,youhaveto fill the fuel tank with petroland oil in the rightratio,usually 40:1.Combusttonstrokethe sparkplug fires,the fuel ignites.

Theexplosionpushesthe piston down.-3itmovesdown,it compressesthe fuel in the crankcaseon4thepistonthe othersideofthe piston.nearsthe bottom,it uncoversthe exhaustport.Thepressurizedfuel in the crankcaserushesinto thecylinder.Thepressurepushesout the exhaustgas.5the piston reachesthe bottom,ituncoversthe fuel intakeport.Compresstonstroke6the piston movesup the cylinder,itcompressesthefuel.At the sametime,the fuel valve?theopensandfreshfuelissuckedin.Justpistonreachesthe top ofthe cylinder,the plugfiresagaÍnandthecyclerepeats.Two-strokeenginesarepowerfulfor their sizebut theyproducea lot of pollution.Theywear badly andsthey havebeenusedfor sometime,theyproduceoÍlysmoke.SPARK PLUGGo to Grammar reference p.117I Link the pairs of actions with a suitable time word.1 The wind turns the pump blades./ The pistonmoves up and down.2 The blade rotates./ Water is pumped from the well.3 Baylis invented the clockwork radio.

/ He inventedthe electric shoe.4 The Internet existed./ The World Wide Web becamepopular.5 The generatorturns. / It produces electricity.6 She left college'She became an engÍneer.7 You apply the brakes./ The car slows down.8 You press the accelerator./ The car speedsup.COMBUSTIONAppropriatetechnology3lPairworkProblem-solvingThe Stirling engine is a simple hot air engine. Look atthe diagram and put the sentences in the correct orderto explainhowitworks.I Work in pairs,A and B.Studythis photo of anappropriatetechnologydevice.Discusstogetherwhatitmightbe...u...:i:...r1DISPLACERPISTON?,COOLED CHAMBER(),.E'Éff3-tt.ill't((:i: :1POWERPISTONTheair coolsand pressuredropsin the powercylinder.

b Thisdisplacesthe air to the hot end. c Theair heatsup rapidly and pushesthe powerpistonbackupthecylinder. Thismovementrotatesthe flywheel,drawÍngthedisplacerpistonto the coldendofthe cylinder.e Thepowerpistonmovesdownthecylinder.-f \Alhenthe displacer moves to the hot end of thecylinder,air is displaced to the cold end. g This rotates the flywheel and moves the displacerpistonbacktothe hot end. Work in pairs.DecÍdewhich factor is the mostimportant to the successful functioning of the engine.Can you explain why?a The amount of heat appliedb The size of the flywheelThe type of metal which the piston is made ofd The temperature difference between the ends of thedisplacer cylindere The external airtemperaturef The diameter of the displacer cylinderWhat modern applicatÍonscanyouthink of fortheStirling engine?Each ofyou has a diagram ofthe device.Exchangeinformation with your partner by asking andanswering questions.

Label all the components.Student AStudent BGo to p.111.Go to p.113.f) Togetherdecide how the device operates.Thencompare your explanation with the recording.SpeakingStudythesestatementsaboutappropriatetechnology.Tick(/)the onesyou agreewith and cross(X)thoseyouwith.dÍsagree1 Appropriatetechnologyis onlyfor poorcountries.2 Technologystudentsshouldinvent and makeappropriatetechnologydevices.3 StudyÍngappropriatetechnologyis a waste of time.4 Appropriatetechnologyis out-of-datetechnology.Now compareyour answerswith your partner.DÍscussthe statementsyou disagreeabout.UsefullanguageapproprÍateWhy doyou think that ..,? In my opÍnÍon,technology...Don'tyou think that ' ' .

? My víewis that ' ..l 2 U r r i t5@Iplant (n)l.rrgeirrdustrialt r r l ,l.r i n e r yhite (v)let sorrrebodyuses o n r e t h i nfgo ra s h o r tt i m e ,i nt l t u r r tf o rt r . r v r t t e n tPronunciationNurnbersand quantitiesI( ) t < e u d o L t l i . l tr tt l t t t t l . t t : i . , tcr1. l' 1 . , .

r - i t i t . i , : ' s . ' l ' l i , r t t I i r ; l . r ta t r l c l r c . i \ r r - l l . rr . , v v .r s .a3.742r' 16 KJ lzi 12V t)('b 1150lrurrÍ 30rrrÁi 10"c 250NluB OoC'7')",'"hl.: 10 "d 60 cl-lI 40:l2 ( ) L i s t r : n : , r rrr"lv r i t r - ' J r r ,tr. vhntr r L r r n b ear ,r;r dq r - r r n t i t i e si r ' t t p t. t .s .Bu p a n dd o w n ,b a c k w a r d as r r dforwardsai n a s t r a i g h tl i n el.cd) Go to Symbols and characters p.U4VocabularyDescribingrn@tiurr1M u t c ] r a c l j e c t i v c i l i , v , r r L i i l l l ' ,d i i ] ! ] í i 1 l i l :l ;' l : t r l!. r l l v r l l [ l Er\ F.ir..'l,,uv1 atLticL:r2 clui:klvi,::'3 litrear4 oscillatirrg5 tecipr';r-rtirrg6 rof:irycolunrn of thertner to drawA p p r o p r i a t e t e c h n o l o g3y3ChecklistAssessyour progressin this unit.Tick(/) the statementswhich aretrue.I know the wordsto describemovementi n a m e c h a n i s ma n dt h e n a m e sf o r s i m p l emechanismsCustomeÍCa]eExplainingthe differencebetweenproductsI c a ne x p l a i nh o w a r n e c h a n i s mworksIc a n u n d e r s t a n da n d s a yn u m b e r sa n dquantitiesarcuratelyI can expleirrthe differencebetweenproductsM y r e a d i n ga n d l i s t e n i n ga r eg o o de n o u g f tro u n d e r s t a n dm o s to f e a c ht e x ti r rt h i su n i tKey wordsAdjectivesruralsound-proofedtwo-strokeWork ínpairs,A an<lB.StudentAGo to p.111..Student BYou are a customer at a plant hire cclmpany.You wantto hire a portable generatorfor two weeks to providepower for your horne.You don't want a noisy machirreand you only want to fill the tank once a day.It rrust beeasyto use ancl provide sufficient power for yourhome.Y<-rudon,t watrt to pay tnclrethan € 4 0 a day.Useful languageWhat'sthe output?What kÍndoffuel does it use?How often do I needto.fiIlit up?Is Íteasy to start?How noísyis ít?How muchwÍIIit cost?Nounsacceleratorcompressionc r an k s h a f td o m e s t i ca p p l i a n c ee x h a u s tg a sfuelgenerarepulleyNoun and verbpumpVerbscharge(batteries)engage(gears)wearN o t eh e r ea n y t h i n ga b o u th o w E n g l i s hi s u s e di n t e c h n o l o g y t h aits n e w t o y o u .3 4 U n i t6SwitchonLook at the picture of the police officer.Can you name any of the equipment he carries?qi*x\I--tt-r3lfirbListeningCrime-fightingequipmentQ Listen to a police officer talking about hisequipment.