HBJ/

New Frontiers/

What Makes Sound p. 346/

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R4N14/

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/-/[ALWhen you hear*D1 the buzz (of a bee, )]do you ever wonder*D1 [DOhow it makes*D1 that sound? ]/-/It does*D1 it (by moving=GOP061 )its wings back and forth. /-/This moving=GNS050 back and forth is called*P1 vibrating.=GRO010 /-/The vibrating=P--01 wings (of the insect )push*D1 the air and make*D1 it move.=IDO020 /-/The beginning (of all sound )is*N1 something [JRthat vibrates,*- or moves*- back and forth. ]/-/[ALWhen you pound*D1 a drum, or ring*D1 a bell, ]you are making*D1I things move=IDO050 back and forth. /-/Objects [JMthat move*- back and forth fast enough ]make*D1 sound. /-/[ALWhen you talk,*- ]your tongue, vocal cords, and lips move*- back and forth. /-/They cause*D1I the air to move.=IDO040 /-/They even make*D1I your head rattle=IDO030 and shake.=IDO020 /-/To prove=IAV031 it, place*D1 your hand firmly (on top )(of your head. )/-/Then talk*- loudly, or sing.*- /-/You will feel*D1I your head shake,=IDO030 or vibrate.=IDO020 /-/You can feel*D1 the vibrations set=P--02 up (in the air )[ARwhen you talk*- ](by using=GOP082 )an empty coffee can or oat-meal box. /-/Hold*D2 the empty can or box [ARso that your finger tips are touching*D2 the bottom or closed=P--01 end (of it. )]/-/Place*D1 the open end (of the can or box )(next to your mouth. )/-/Now talk*- (into it. )/-/[ALAs the air carrying=P--031 your sounds hits*D1 the bottom (of the can or box, )]it will vibrate.*- /-/You will feel*D1 these vibrations (with your finger tips. )/-/You can find*D1 out [DOthat things [JMwhich vibrate*- ]make*D1 sound ](by making=GOP061 )your own simple string telephone. /-/Get*D1 two empty coffee cans. /-/Ask*D1I a grown-up to punch=IDO191 a hole (through the bottom )(of each can )(with a small nail and a hammer. )!!!!!!!!