Fizika 7-sinf 201 201 1- nazorat ishi mavzu

Download 195,43 Kb.

Sana	19.02.2017
Hajmi	195,43 Kb.
	#2913

Fizika 7-sinf

201____-201____

1- NAZORAT ISHI

Mavzu: Kinematika asoslari

Nazorat shakli: Yozma ish
I variant

«Nexiya» yengil avtomashinasi Qarshidan Buxorogacha bo‘lgan 150 km yo‘lni 65 minutda bosib o‘tdi. Avtomobilning o‘rtacha tezligini toping;
«Tiko» avtomobili o‘rnidan qo‘zg‘alib 12 sekund ichida o‘z tezligini 100 km/ soatga yetkazdi. Uning tezlanishi nimaga teng?
O‘quvchining uyidan maktabgacha bo‘lgan masofa 500 m ga teng. O‘quvchi 2,5 km/soat tezlik bilan yursa, maktabda necha minutda yetib boradi?

II variant

Jism dastlabki 5 sekundda 60 metr, keyingi 20 sekundda 100 metr va oxirgi 10 sekundda 50 metr masofani bosib o‘tgan. Yo‘lning har bir qismidagi va butun qismidagi o‘rtacha tezliklarini toping;
Jism tekis tezlanuvchan harakat qilib 5 sekund ichida o‘z tezligini 0,2 m/s dan 0,5 m/s gacha oshirdi. Jism qanday tezlanish bilan harakatlangan?
Samolyot qo‘nish paytida g‘ildiraklari yerga tekkandagi tezligi 360 km/soat. Agar uning tezlanishi –2,0 m/s² bo‘lsa, u qancha vaqtdan keyin to‘xtaydi?

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Nazorat ishining bali – bahosi:

2- NAZORAT ISHI

Mavzu: Kinematika asoslari

Nazorat shakli: Test sinovi
1. Mexanik harakat deb qanday harakatga aytiladi?

Jismlarning harakatiga;
Jismning boshlang‘ich va oxirgi vaziyatini tutashtiruvchi to‘g‘ri chiziqqa;
Vaqt o‘tishi bilan jism vaziyatining boshqa jismlarga nisbatan o‘zgarishiga;
Jismning harakatiga qaysi jismga nisbatan qaralayotgan bo‘lsa.

2. Agar har qanday jism istalgan bir xil vaqt oraliqlarida bir xil yo‘lni
bosib o‘tsa, u holda uning harakati deyiladi.

a) ………….notekis harakat; b) ………….tekis harakat;

c) ………….aylana harakat; d) ………….ilgarilanma harakat.

3. Uzunligi 9 m bo‘lgan ingichka ip boshidan jo‘nagan chumoli ip oxiriga
kelguncha 5 minut o‘tdi. Chumolining tezligini toping (sm/s) . $\\user-3\e\skan\knigi\fizika\docu0033.bmp$

a) 1,8; b) 3; c) 2,9; d) 3,5.

4. 15 m/s tezlik necha km/soat bo‘ladi?

a) 18; b) 30; c) 54; d) 75.

5. Rasmda jism tezligining vaqtga bog‘liqlik grafigi

keltirilgan. Tezlanishni toping.

a) 15; b) 30;

c) 7,5; d) 8.

6. Avtomobil A bekatdan В bekatgacha 40 km/soat, qaytishda esa 30 m/soat teziik bilan harakatlandi. Reys davomida o‘rtacha tezlikni toping (km/soat) .

a) 34,3; b) 34; c) 33,5; d) 35.

7. Jismning havosiz joyda faqat yerning ta'siridagi harakati……….deb aytiladi.

………………notekis harakatda tezlanish;
………………tekis tezlanuvchan harakatda tezlanish;
………………erkin tushish;
………………tekis o‘zgaruvchan harakatda tezlanish.

8.20 m/s tezlik bilan ketayotgan avtomobil tormozlanish natijasida 4 s da to‘xtadi. Avtomobil tezlanishining modulini toping (m/s²) .

a) 4; b) 5; c) 10; d) 20.

9. Agar raketa 50 m/s² tezlanish bilan harakat boshlagan bo‘lsa, 2 s dan so‘ng uning tezligi qanday bo‘ladi (m/s) ?

a) 12,5; b) 25; c) 50; d) 100.

10. Avtomobil tekis sekinlanuvchan harakat qilib tepalikka chiqmoqda.Uning o‘rtacha tezligi 10 m/s, oxirgi tezligi 2 m/s bo‘lsa, boshlang‘ich tezligi qanday (m/s) bo‘lgan?

a) 18; b) 20; c) 15; d) 10.

11. Moddiy nuqtaning aylana bo‘ylab kattaligi o‘zgarmas tezlik bilan harakatini qanday harakat deb hisoblash kerak?

a) tekis sekinlanuvchan; b) notekis tezlanuvchan;

c) tekis tezlanuvchan; d) υ=const bo‘lgan harakat.

12. 20 m/s ga teng boshlang‘ich tezlik bilan erkin tushayotgan jismning harakat boshlangandan 5s o‘tgan paytdagi tezligi qanday (m/s) bo‘ladi?
g=10 m/s²

a) 4; b) 20; c) 50; d) 70.

13. Erkin tushish boshlanganidan 4 s o‘tgan paytda jism tezligi necha
m/s bo‘ladi?

a) 40; b) 30; c) 20; d) 10.

14. Radiusi 0,25 m bo‘lgan g‘ildirak 12 m/s tezlik bilan g‘ildiramoqda. G‘ildirakning burchak tezligi qanday (rad/s) .

a) 12; b) 24; c) 36; d) 48.

15. Vagonning relsga nisbatan tezligi 72 km/soat bo‘lsa, uning diametri 40 sm bo‘lgan g‘ildiragining burchak tezligi necha rad/s dа teng?

a) 40; b) 50; c) 72; d) 144.

Test raqami	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Javob
Ball

Nazorat ishining bali – bahosi:

3- NAZORAT ISHI

Mavzu: Dinamika asoslari

Nazorat shakli: Yozma ish
I variant

Avtomobil g‘ildiragi 0,5 minutda 60 marta tekis aylandi. G‘ildirakning aylanish davri va chastotasini toping;
0.2 sekund davomida g‘ildirak 2 rad ga burildi. Uning o‘qidan 6 sm uzoqlikdagi nuqtasining chiziqli tezligini toping;
Aylana bo‘ylab tekis harakat qilayotgan jismning aylanish davri 0,125 s, radiusi 1,5 m dа teng. Jismning markazga intilma tezlanishi nimaga teng?

II variant

Uzunligi 1 metr ipga bog‘langan sharcha 1 minutda 60 marta aylandi. Sharchaning aylanish chastotasi, davri hamda chiziqli tezligini toping;
Shkiv 50 rad/s burchakli tezlik bilan aylanmoqda. Aylanish o‘qidan 60 mm masofadagi nuqtaning tezligini toping;
Yo‘lning radiusi 100 m bo‘lgan burilish joyida avtomobil 54 km/soat tezlik bilan harakatlanadi. Avtomobilning markazga intilma tezlanishini toping.

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Nazorat ishining bali – bahosi:

4- NAZORAT ISHI

Mavzu: Dinamika asoslari

Nazorat shakli: Test sinovi
1. Kuch birligini ko‘rsating.

a) kgm/s; b) N; c) kgm²/s; d) Pa.

2. Jismga qo‘yilgan kuch 2 marta, jism massasi esa 4 marta oshirildi. Jismning tezlanishi qanday o‘zgaradi?

a) 2 marta ortadi; b) 2 marta kamayadi;

c) 4 marta ortadi; d) 4 marta kamayadi.

3. Nyutonning uchinchi qonuni qaysi ta’rifda to‘g‘ri ko‘rsatilgan?

a) Ta’sir aks ta’sirni vujudga keltiradi, ular son qiymat jihatidan o‘zaro teng;

b) O‘zaro ta'sirlashuvchi ikki jism bir-biriga miqdor jihatidan teng va to‘g‘ri
chiziq bo‘yicha qarama-qarshi tomonlarga yo‘nalgan kuchlar bilan ta'sir qiladi.

c) O‘zaro ta'sirlashayotgan ikki jismning ta'sir kuchlari o‘zaro teng bo‘lib, qarama-qarshi tomonlarga yo‘nalgan.

d) Ta'sir, aks ta'sirga teng bo‘lib, qarama-qarshi yo‘naladi.

4. Aylana bo‘ylab tekis harakat qilayotgan jismni aylanish radiusi 2 marta orttirilsa,
markazdan qochma kuch qanday o‘zgaradi?

a) 2 marta ortadi; b) 2 marta kamayadi;

c) 4 marta ortadi; d) 4 marta kamayadi.

5. Bir-biriga qarama-qarshi harakatlanayotgan jismlarning massalari teng bo‘lib, tezliklari 5 m/s va 10 m/s ga teng. To‘qnashgandan so‘ng ularning harakati qanday bo‘ladi?

a) 5 m/s, 1 jism yo‘nalishida; b) 2,5 m/s, 2- jism yo‘nalishida;

c) 2 m/s, 1 jism yo‘nalishida; d) to‘xtab qoladi.

6. Massasi 2 kg bo‘lgan jism, 3 rad/s tezlik bilan aylanmoqda. Bunda markazdan qochma kuch 18 N ga teng bo‘lsa, aylanish radiusi nimaga teng (m) ?

a) 1; b) 2; c) 3; d) 4.

7. Jismga 10 N kuch ta'sir etganda 5 s dan so‘ng 10 m/s tezlikka erishdi.Jismning massasi nimaga teng (kg) ?

a) 1; b) 3; c) 5; d) 7.

8. Jismning tezligi va aylanish radiusi 2 marta kamaytirilsa, markazdan qochma kuch qanday o‘zgaradi?

a) 2 marta ortadi; b) 2 marta kamayadi;

c) 4 marta ortadi; d) 4 marta kamayadi.

9. Yo‘lning qayrilish joyiga kelganda mashina tezligini qanday o‘zgar-
tirish kerak?

Javob:_______________________________________________________________

10. Mexanik kuch ta'rifini yozib ko‘rsating.

Javob: _______________________________________________________________

Test raqami	1	2	3	4	5	6	7	8	9	10
Javob
Ball

Nazorat ishining bali – bahosi:

5- NAZORAT ISHI

Mavzu: Dinamika asoslari

Nazorat shakli: Yozma ish

I variant

Butun olam tortishish qonuniga ta'rif bering. Formulasini yozing.
Massasi 2 t bo‘lgan avtomobil tirkagichi, avtomobilga birligi 100 kN/m bo‘lgan tros yordamida ulangan. Agar ular 0,5 m/s² tezlanish bilan harakatlansa tros qanchaga uzayadi?
Kosmik kema yer sathidan besh yer radiusiga teng masofaga uzoqlashsa, uning yerga tortilish kuchi qanday o‘zgaradi?

II variant

Elastiklik kuchi qachon paydo bo‘ladi? Elastik va plastik deformatsiyaga ta’rif bering.
Massasi 2,5 t bo‘lgan avtomobil tirkagichi avtomobilga 150 kN/m bo‘lgan tros yordamida ulangan. Agar ular 0.6 m/s² tezlanish bilan harakatlansa tros qanchaga uzayadi?
Kosmik kema yer sathidan to‘rt yer radiusiga teng masofaga uzoqlashsa, uning yerga tortilish kuchi qanday o‘zgaradi?

_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________

_________________________________________________________________________

__________________________________________________________________________

Nazorat ishining bali – bahosi:

6- NAZORAT ISHI

Mavzu: Saqlanish qonuni

Nazorat shakli: Test sinovi
1. Jism 10 N kuch ta'sirida tekis harakat qilmoqda. Uning massasi 5 kg bo‘lsa,
ishqalanish koeffisentini toping.

a) 0,4; b) 0,5; c) 0,2; d) 0,3.

2. Jism massasi 20 kg, ishqalanish koeffitsiyenti 0,2 ga teng. Jism qanday kuch (N) ta'sirida tekis harakat qiladi?

a) 20; b) 40; c) 10; d) 4.

3. Tezligi 12 m/s bo‘lgan avtomobil tormozlanib to‘xtadi. Agar avtomobil g‘ildiraklari bilan yo‘l sirti orasidagi sirpanish ishqalanish koeffitsiyenti 0,4 ga teng bo‘lsa, qancha vaqt davomida tormozlangan?

a) 1; b) 2; c) 3; d) 4.

4. Avtomobil yo‘lning egrilik radiusi 40 m bo‘lgan qayrilish joyiga keldi. Agar g‘ildiraklarning yo‘lga sirpanish ishqalanish koeffitsiyenti 0,25 ga teng bo‘lsa tezligini necha km/soat ga tushirib o‘tish kerak?

a) 20; b) 36; c) 72; d) 54.

5. Massasi 20 t bo‘lgan vagon 0,3 m/s tezlik bilan harakatlanib, massasi
30 t va tezligi 0,2 m/s bo‘lgan vagonni quvib yetadi va urilgandan so‘ng,
harakatini birga davom etdiradi. Keyingi tezlik nimaga teng bo‘ladi?

a) 0,24 m/s; b) 0,48 m/s; c) 0,22 m/s; d) 0,18 m/s.

6. Erkin tushayotgan 4 kg massali jism o‘z tezligini 2 m/s dan 8 m/s ga oshirdi. Impuls o‘zgarishini toping.

a) 16 kg m/s; b) 24 kg m/s; c) 64 kg m/s; d) 32 kg m/s.

7. Nima uchun futbolchilarning oyoq kiyimlari (butsilari) ning tagcharmiga «tishlar» qilinadi?

Javob_____________________________________________________________________

8. Nima uchun tirik baliqni qo‘lda ushlab turish qiyin?

Javob_____________________________________________________________________

9. Impulsning saqlanish qonunini yozing.

Javob_____________________________________________________________________

10. Jism impulsi qanday kattalik (vektormi yoki skalyar)? Javobingizni asoslab yozing.

Javob_____________________________________________________________________

Test raqami	1	2	3	4	5	6	7	8	9	10
Javob
Ball

Nazorat ishining bali – bahosi:

7- NAZORAT ISHI

Mavzu: Saqlanish qonuni

Nazorat shakli: Yozma ish

I variant

Dinamometr 40 N gacha bo‘lgan kuchni o‘lchay oladi. Unda birligi 500 N/m bo‘lgan prujina o‘rnatilgan. Shkalaning o‘rtasidan oxirigacha prujinani cho‘zish uchun bajarilgan ishni hisoblang.
Massasi 2 kg bo‘lgan jismga 2 s davomida 2 N kuch ta’sir qildi. Kuch impulsi va jism impulsining o‘zgarishini toping.
Bolalar prujinali to‘pponchasining prujinasini 5 sm ga siqish oxirida 20 N kuch qo‘yilgan. Siqilgan prujinaning potensial energiyasini toping.

II variant

Ot aravani 400 N kuch bilan 0,8 m/s tezlik bilan tekis tortmoqda. Bunda 1 soatda qancha ish bajariladi?
7 m/s tezlik bilan chopib ketayotgan 70 kg massali sportchi, 2 m/s tezlik bilan harakatlanayotgan 30 kg massali aravachani quvib yetib, uning ustiga chiqib oldi. Bundan keyin aravacha qanday tezlik bilan harakat qiladi?
18 km/soat tezlik bilan harakatlanayotgan jismning kinetik energiyasi 500 J ga teng bo‘lsa, uning massasini toping.

_________________________________________________________________________

_________________________________________________________________________

Nazorat ishining bali – bahosi:
8- NAZORAT ISHI

Mavzu: Saqlanish qonuni

Nazorat shakli: Test sinovi

1.«Jismning tezligi tufayli еgа bo‘lgan energiyasi…………deyiladi». Nuqtalar o‘rniga to‘g‘ri javobni topib qo‘ying.

a) ………………potensial energiya...;

b) ………………kinetik energiya...;

c) ………………to‘la energiya....;

d) ………………quvvat... .

2.Jismning vaziyati tufayli еgа bo‘lgan energiyasi…………deyiladi».

Nuqtalar o‘rniga to‘g‘ri javobni topib qo‘ying.

a) ………………potensial energiya...;

b) ………………kinetik energiya...;

c) ………………to‘la energiya...;

d) ………………quvvat....

3.6 kW soat energiya necha joulga teng?

a) 3,6 ·10⁶ J; b) 3,6·10⁷J;

c) 2,16·10⁷J; d) 2,16·10⁶J.

4.«Vaqt birligi ichida bajarilgan ishga………………deyiladi. Nuqtalar o‘rniga to‘g‘ri javobni topib qo‘ying.

a) ………………potensial energiya...;

b) ………………kinetik energiya...;

c) ………………to‘la energiya...;

d) ………………quvvat...

5.Massasi 2 t bo‘lgan avtomobil o‘z tezligini v km/soat dan 90 km/soat ga
o‘zgartirishi uchun 525 KJ ish bajardi. v necha km/soatga teng?

a) 10; b) 20; c) 36; d) 54.

6. 54 m balandlikdan erkin tushayotgan 5.2 kg li yuk yerdan 25 m
balandlikda qanday to‘la energiyaga ega bo‘ladi?

a) 2808 J; b) 2600 J;

c) 1404 J; d) 1300 J.

7. Avtomobil qiya tekislikka ko‘tarilmoqda. Avtomobil dvigatelining

quvvati 100 kW Tortish kuchi (kN) qanday bo‘lganda u tepalikka 36 km/soat tezlik bilan chiqa oladi?

a) 10; b) 15; c) 20; d ) 25.

8. Daryo suvining quvvati qayerda katta bo‘ladi ?

a) boshlanishida; b) o‘rtasida;

c) quyi o‘zanida d) daryo suvining quvvati hamma joyda bir xil bo‘ladi.

9.Kinetik energiyaning saqlanish qonuni mavjudmi? Javobingizni asoslab yozing.

Javob_____________________________________________________________________

10.Potensial energiyaning saqlanish qonuni mavjudmi? Javobingizni asoslab yozing.

Javob_____________________________________________________________________

Test raqami	1	2	3	4	5	6	7	8	9	10
Javob
Ball

Nazorat ishining bali – bahosi:

Download 195,43 Kb.

Do'stlaringiz bilan baham: