3- tabiiy fan 7 nazorat ishi 10 bob
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3- sinf tabiiy fan 7- nazorat ishi 1- variant 1. jismlarni yorug’lik o’tkazishiga qarab necha turga ajratamiz va ularning nomlari nima? a) 3 turga: shaffof , noshaffof, shisha b) 2 turga: shaffof va noshaffof d) 2 turga: shisha va devor 2. soya qanday hosil bo’ladi? a) nur tufayli b) nur yo’lini biror shaffof jism yordamida to’sish orqali d) nur yo’lini biror noshaffof jism yordamida to’sish orqali 3.ko’zi ojiz odam qanday harakatlanadi? a) oyoqlari yordamida b) biror kimsa yordamida d) sezgi organlari yordamida 4. jism yorug’lik manbayiga yaqin bo’lsa uning soyasi qanday bo’ladi? a) kattaroq b) kichikroq d) o’rtacha 5. jism yorug’lik manbayidan uzoqlashtirilsa uning soyasi qanday bo’ladi? a) kattaroq b) kichikroq d) o’rtacha 6. jismlardan orqaga qaytib keladigan tovush nima …
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