Qoraqalpog’iston respublikasi xaliq ta’lim vazirligi

Ishning natijasi:

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Xulosa:

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Bahosi: ________ Tekshirdi :_____________________________

6-sinf 6-laboratoriya ishi

Termometr yordamida havo va suyuqlikning haroratini o’lchash

Kerakli asboblar. Termometr, issiq suv, sovuq suv, menzurka, shisha tayoqcha, suv solish uchun kosacha.

Ishni bajarish tartibi

1. Termometr fi zika xonasining quyosh nurlari to‘g‘ridan-to‘g‘ri tushmaydigan, isitish vositalari (batareya, plitka) dan uzoqda, lekin shkalasi

aniq ko‘rinadigan joyga osib qo‘yiladi.

2. Tajribani o‘tkazishga tayyorlanish jarayonida (5–6 min) termometr ko‘rsatishi o‘zgarmay qolganidan so‘ng xona temperaturasi yozib olinadi.

3. Plitka yoki gaz alangasida suvli idish qizdiriladi.

4. Menzurkada 100 ml suv o‘lchab olinib, kosachaga quyiladi va

termometr suvga tushiriladi. Biror minutdan so‘ng termometr ko‘rsatishi t1 yozib olinadi.

5. Menzurkada 100 ml suv o‘lchab olinadi va unga termometr tushiriladi. Biror minutdan so‘ng termometr ko‘rsatishi t2 yozib olinadi.

6. Menzurkadagi issiq suvni sovuq suvli kosachaga ag‘dariladi. Shisha tayoqcha bilan aralashtirilib, temperaturasi t3 o‘lchanadi.

7. Yuqoridagi tajribani issiq suvning temperaturasi turlicha bo‘lgan hollarda takrorlanadi.

Natijasi:

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Xulosa:

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Bahosi: ________ Teskshirdi :_____________________________

6-sinf 7-laboratoriya ishi

Yassi ko’zgu yordamida yorug’likning qaytishini o‘rganish

Kerakli asboblar. 1) yassi ko‘zgu o‘rnatilgan optik disk; 2) nurli

ko‘rsatkich yoki 3–6 volt kuchlanishga mo‘ljallangan cho‘g‘lanma elektr

lampochkasi; 3) o‘lchamlari 160 × 200 mm bo‘lgan oq qalin qog‘oz.

Ishni bajarish.

1. 115-rasmda ko‘rsatilgan qurilma yig‘iladi. Optik disk o‘rtasiga yassi ko‘zgu o‘rnatiladi.

2. Nurli ko‘rsatkichni (yoki cho‘g‘lanma elektr lampochkasini) optik disk chetiga mahkamlab, undan ko‘zguga yorug‘lik tushiriladi.

3. Tushish burchagini o‘zgartirib, ularga mos kelgan qaytish burchaklari aniqlanadi. Natijalari sinf doskasiga yozib boriladi.

4. Tushish burchagi va qaytish burchaklari teng ekanligi tekshiriladi.

5. Oq qalin qog‘ozni qaytayotgan nur tomondagi diskka yopishadigan qilib qo‘yiladi. Shunda qog‘oz yuzida qay tayotgan nur ko‘rinib turadi. Qog‘ozni biroz burilsa, qaytgan nurning boshlanishi ko‘rinadi. Bu hodisadan xulosa chiqariladi.

6. Tajribani nurli ko‘rsatkichni optik diskning chap tomoniga o‘rnatib

takrorlanadi.