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Natiijada casharka

I can collect data to test the effectiveness of different lubricants, taking steps to ensure a fair test.

Muuji qoraalka
Lubricants are substances added between two surfaces to reduce the friction between them. In a fair test, only the variable we are testing is changed. In a fair test, everything we are not testing is kept the same for every measurement. Repeat measurements help check for anomalous results. A mean combines repeat measurements into a single result.

Warqadda shaqada

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Imtixaannada

  1. 1. Si tijaabadu u noqoto tijaabo cadaalad ah (fair test), imisa shay ayaa la beddeli karaa inta u dhaxaysa tijaabo kasta?

    • Si tijaabadu u noqoto mid cadaalad ah, waxba lama beddeli karo inta u dhaxaysa tijaabo kasta.
    • Jawaabta saxda ah:Si tijaabadu u noqoto mid cadaalad ah, hal shay oo kaliya ayaa la beddeli karaa inta u dhaxaysa tijaabo kasta.
    • Si tijaabadu u noqoto mid cadaalad ah, laba shay oo kaliya ayaa la beddeli karaa inta u dhaxaysa tijaabo kasta.

  2. 2. Sidee ayay saynisyahannadu u hubiyaan khaladaadka natiijooyinka marka ay tijaabada samaynayaan?

    • Waxay had iyo jeer la yimaadaan saynisyahan kale oo daawanaya tijaabada sidoo kale.
    • Jawaabta saxda ah:Waxay sameeyaan cabbiro soo noqnoqda (repeat measurements).
    • Waxay si taxaddar leh u dejistaan qalabkooda.

  3. 3. Saynisyahan ayaa miis ku jiiday cufan afar jeer, hab isku mid ah mar kasta. Masaafada uu cufku ku safray mar kasta waxay ahayd 34, 37, 55 iyo 35 cm. Natiijadee ayaa u badan inay tahay qalad?

    • 34 cm
    • 37 cm
    • Jawaabta saxda ah:55 cm
    • 35 cm

  4. 4. Kee ka mid ah weedhahan soo socda waa tusaalooyin lubricants (walxaha lagu daro si loo yareeyo is-jiidashada)?

    • Jawaabta saxda ah:Saliid ku taal silsiladda baaskiilka
    • Baruur ku jirta matoorka
    • Biyo ku jira biyo-dhac
    • Rinji ku yaal alwaaxda dabaqa

  5. 5. Saynisyahan ayaa afar jeer ku siidaynaya cuf (mass) miis, hab isku mid ah mar kasta. Masaafada uu cufku ku safray mar kasta waxay ahayd 54, 57, 54, iyo 55 cm. Maxaa loo isticmaali karaa natiijada kama dambaysta ah?

    • Natiijada ugu hooseysa (54 cm).
    • Natiijada ugu sareysa (57 cm).
    • Natiijada ugu badan (54 cm).
    • Jawaabta saxda ah:Celceliska (average) natiijada (55 cm).

  1. 1. Waa maxay natiijo aan caadi ahayn (anomalous result)?

    • Natiijo uun dareenkaaga ku xun.
    • Jawaabta saxda ah:Natiijo aan la jaanqaadayn natiijooyinka kale.
    • Natiijo aad ugu dhow natiijooyinka kale.

  2. 2. Saynisyahan ayaa u jiiday miisaan miis afarta jeer, si isku mid ah markasta, si uu u hubiyo khaladaadka. Masaafada uu miisaanku socday waxay ahayd 22, 19, 23, iyo 46 cm. Keebaa natiijooyinka ah mid aan caadi ahayn?

    • 22 cm
    • 19 cm
    • 23 cm
    • Jawaabta saxda ah:46 cm

  3. 3. Waa maxay sababta saxda ah ee keentay in, tijaabo cadaalad ah, waxa kaliya ee aan beddelno uu yahay doorsoome (variable) aan tijaabinayno, wax walba oo aanan tijaabinaynin waa inay isku mid ahaadaan?

    • Si aan u helno natiijooyin soo noqnoqda.
    • Si aan u aqoonsanno natiijooyin aan caadi ahayn.
    • Jawaabta saxda ah:Si aan u hubinno in natiijooyinka kala duwan ay ka yimaadeen waxa kaliya ee aan beddeleyno.

Waxa ardaydu arkaan

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

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