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Sida aan wax u aragno

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Waxaan sharxi karaa sida aan wax u aragno iyada oo la adeegsanayo indhaha.

Hordhac

Casharkaan oo qayb ka ah cutubka 'Sound, Light and Vision', wuxuu ku saabsan yahay sida araggu u shaqeeyo. Waa inaad hore u garanaysaa in iftiinku ka yimaado ilo kala duwan sida qorraxda ama laambadda, iyo in walxaha qaarkood ay iftiin samaynayaan halka kuwa kalena aysan samayn.

Muuji qoraalka
Luminous objects give out light, non–luminous objects do not. All surfaces reflect light. Mirror–like surfaces reflect light in a regular way, other surfaces scatter light. For anything to be seen, light from it (either emitted or reflected) must enter the eye. Light enters the eye through a hole (the pupil) and is detected by the light–sensitive back surface (the retina). Beams of light can only be seen if the light hits something and reflects (or scatters) towards an eye.

Warqadda shaqada

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Imtixaannada

  1. 1. Ereyadaan ka mid ah waa lidka (opposite) ee ereyga 'smooth' (siman)?

    • iftiin (bright)
    • Jawaabta saxda ah:qallafsan (rough)
    • dhalaalaya (shiny)
    • madow (dark)

  2. 2. Ereygaan soo socdaa, kee baa ka soo horjeeda ereyga 'shiny' (dhalaalaya)?

    • dhegdheg (sticky)
    • madow (dark)
    • madow (black)
    • Jawaabta saxda ah:dhalaal la'aan (dull)

  3. 3. Waa kuwee hadalladan soo socda ee ku saabsan iftiinka (light rays) ee sax ah?

    • Jawaabta saxda ah:Waa hab loogu qaabeeyo iftiinka.
    • Waxay tilmaamaan jihada iftiinku u socdo.
    • Iftiin khafiif ah oo aad u dhuuban wuxuu ka koobnaan karaa hal ray oo kaliya.

  4. 4. Sharciga koowaad ee milicsiga wuxuu sheegayaa in xagasha milicsiga ay la mid tahay …

    • Jawaabta saxda ah:xagasha soo-gaadhista (angle of incidence).
    • xagal qumman (right angle).
    • fallaadhaha soo-gaadhista (incident ray).
    • fallaadhaha milicsiga (reflected ray).

  5. 5. Sharciga labaad ee milicsiga wuxuu sheegayaa in laydhka soo dhaca iyo laydhka milicsan ay yihiin …

    • kuwa ku socda dhinaca toosan (normal).
    • Jawaabta saxda ah:kuwa ku yaal dhinacyada ka soo horjeeda ee xariiqda toosan (normal).
    • kuwa ku yaal dhinaca isku midka ah ee xariiqda toosan (normal).

  6. 6. Sharciga saddexaad ee milicsiga wuxuu sheegayaa in labada fallaadho (rays) iyo xariijinta toosan (normal) ay dhamaantood yihiin …

    • jihooyin kala duwan.
    • kuwa isku xariiq ah.
    • Jawaabta saxda ah:kuwa isku diyaarad (plane) ah.
    • kuwa diyaarado kala duwan ah.

  1. 1. Waa kuwee shaygan soo socda kuwa iftiinka leh (luminous)?

    • muraayad
    • Jawaabta saxda ah:dab
    • toosh
    • biyo

  2. 2. Saddex arday ayaa sheegaya hadallo A, B iyo C. A: waxyaalaha cad (white) kaliya ayaa milicsada (reflect). B: waxyaalaha dhalaalaya (shiny) kaliya ayaa milicsada. C: waxaad naftaada ku arki kartaa shay kasta oo milicsada. Immisa ka mid ah hadallada ayaa sax ah?

    • Jawaabta saxda ah:midna ma aha
    • hal
    • laba
    • saddex

  3. 3. Mid ka mid ah weedhahan soo socda ayaa qeexaya marka iftiinku u hogaansamo sharciyada milicsiga (laws of reflection)?

    • Marka iftiin midab kasta uu ka milicsado shay siman (smooth).
    • Jawaabta saxda ah:Marka iftiin midab kasta uu ka milicsado shay kasta.
    • Marka iftiin cad (white light) uu ka milicsado shay siman.
    • Marka iftiin cad uu ka milicsado shay kasta.

  4. 4. Mid ka mid ah kuwan soo socda ayaa ah qeexida isha (pupil) ee indhaha?

    • Dalool ku yaal gadaasha isha oo iftiinka ka soo baxo.
    • Jawaabta saxda ah:Dalool ku yaal horta isha oo iftiinka gala.
    • Qaybta midabka leh ee horta isha.
    • Qaybta cad ee horta isha.

  5. 5. Arday ayaa iftiin laser ku iftiimisay gidaar. Waxay arki karaan meel iftiin ah oo uu laabtu ku dhacdo gidaarka, laakiin ma arki karaan iftiinka intuu u socdo gidaarka. Kee ayaa ka mid ah weedhahan soo socda oo sharxaya sababta?

    • Iftiinku waa uu dhaqso badan yahay oo ma arki kartid.
    • Waxa kaliya oo aad arki kartaa waa iftiin ka dib marka uu ka muuqdo (reflect).
    • Jawaabta saxda ah:Waxba kuma jiraan hawada si iftiinku uga muuqdo (reflect).
    • Iftiinku wuxuu si toos ah uga boodaa laser-ka una baxaa gidaarka, isagoon dhex marin waxba.

Waxa ardaydu arkaan

Tan waa isla casharka sida ardaygu u arko. Waxaad qayb kasta u dirsan kartaa ardayda.

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