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Waxaan sharxi karaa oo sawiri karaa sida iftiin uu u qallooco marka uu ka gudbo hal dhexdhexaad (medium) una gudbo mid kale, waxaana sharxi karaa sida qallooca uu u keeni karo sawirro aan dhab ahayn (virtual images).

Hordhac

Darasgan waxaa loo yaqaan iftiin-jajabinta (refracting light), taas oo ka duwan iftiin-celinta (reflecting light) sidaad arki doontaan. Darasgan wuxuu qayb ka yahay cutubka samaynta sawirada. Waa inaad hore u taqaan sida iftiinka u socdo toos uguna soo baxo ilo iftiin, sidoo kale waa inaad fahantahay iftiin-celinta (reflection) iyo sida ay muraayadaha u sawiraan walxaha.

Muuji qoraalka
Light changes direction when it moves into a new medium (material) at an angle to the normal. This is called refraction. When light enters a transparent material from air, it turns towards the normal. When light leaves a transparent material and re–enters air it turns away from the normal. A ray that enters and leaves glass through parallel sides ends up in its original direction, but displaced to the side. Refraction can cause virtual images of objects to appear where light seems to be coming from.

Warqadda shaqada

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Imtixaannada

  1. 1. Noocyo ka mid ah alaabta soo socda ayaa gudbiya iftiinka?

    • mid aan iftiinka dhex marin (opaque)
    • Jawaabta saxda ah:mid iftiinka qayb ka gudbiya (translucent)
    • Jawaabta saxda ah:mid iftiinka si buuxda u gudbiya (transparent)

  2. 2. Mid ka mid ah weedhahan soo socda ayaa qeexaya iftiin raajo (light ray)?

    • Jawaabta saxda ah:Ma aha shay dhab ah.
    • Waxaa soo saara laser.
    • Waxaa soo saara sanduuqa raajo (ray box).
    • Jawaabta saxda ah:Waa hab lagu qiyaaso iftiinka.

  3. 3. Mid ka mid ah kuwan soo socda ayaa qeexaya xariiqda caadiga ah (normal) ee jaantuska iftiinka ee milicsiga?

    • Waxaa la sawiraa si barbarsooc ah muraayadda.
    • Jawaabta saxda ah:Waxaa la sawiraa xagal qumman (90°) muraayadda.
    • Jawaabta saxda ah:Waxay faa'iido u leedahay in lagu qiyaaso xaglaha jaantuska iftiinka.
    • Waxay faa'iido u leedahay in lagu qiyaaso masaafada jaantuska iftiinka.
    • Jawaabta saxda ah:Waxay la kulantaa muraayadda meesha iftiinku ku dhaco.

  4. 4. Mid ka mid ah kuwan soo socda ayaa si fiican u sharxaya gunaanadka (conclusion) tijaabada?

    • liis hababka lagu horumarin karo tijaabada
    • jaantus iyo garaaf xisaabinta la sameeyay
    • Jawaabta saxda ah:hadal ku saabsan waxa la ogaaday, iyo sida loo ogaaday
    • sharaxaad qalabka la isticmaalay iyo tillaabooyinka la qaaday

  1. 1. Mid ka mid ah kuwan soo socda waa qeexida 'medium' (dhexdhexaadiyaha)?

    • hal iftiin oo keliya
    • urur iftiin ah
    • walax ay iftiinku ka milicsado
    • xuduud u dhaxaysa laba walax
    • Jawaabta saxda ah:walax ay iftiinku dhex marayo

  2. 2. Mid ka mid ah kuwan soo socda ayaa ah qeexida 'refraction' (jajabka iftiinka)?

    • ka soo horjeeda milicsiga (reflection)
    • ka soo horjeeda gudbinta (transmission)
    • isbeddel midabka marka iftiinku galo walxo cusub
    • Jawaabta saxda ah:isbeddel jihada marka iftiinku galo walxo cusub

  3. 3. Waa kuwee kuwan soo socda kuwa suurtagal ah marka iftiinku ku dhaco xadka u dhexeeya laba walxood (materials)?

    • Jawaabta saxda ah:gudbinta (transmission) iyada oo aan la jaan-qaadin (refraction)
    • jaan-qaadista (refraction) iyada oo aan la gudbin (transmission)
    • Jawaabta saxda ah:labadaba gudbinta iyo jaan-qaadista
    • Jawaabta saxda ah:midna gudbinta iyo jaan-qaadista

  4. 4. Rayshada soo dhacda ayaa ku dhacda xadka u dhexeeya hawada iyo galaas. Ma jiro iftiin-jajab (refraction) haddii xagasha soo dhaca ay tahay...

    • Jawaabta saxda ah:0°.
    • 45°.
    • 90°.
    • 180°.

  5. 5. Jaantusku wuxuu muujinayaa saddex iftiin oo gala xabag dhalo ah. Kee ka mid ah weedhahan ayaa sax ah?

    • Ray A ayaa u yara leexan (refracted) sida ugu yar.
    • Jawaabta saxda ah:Ray C ayaa u yara leexan sida ugu yar.
    • Jawaabta saxda ah:Dhammaan saddexda iftiin waxay u leexanayaan xagga xariiqda caadiga ah (normal).
    • Dhammaan saddexda iftiin waxay u leexanayaan ka fog xariiqda caadiga ah.

  6. 6. Jaantusyada soo socda ee kee bixinaya dariiqyada suurtogalka ah ee iftiinka (light rays) maraya baloogyada leydi ah oo hufan (transparent rectangular blocks)?

    • Jaantuska koowaad
    • Jaantuska labaad
    • Jawaabta saxda ah:Jaantuska saddexaad
    • Jaantuska afraad

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