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14 Қараша 2018
470
1 жыл бойы шексіз жүктеңіз
Бүкіләлемдік тартылыс заңы
Subject: Physics Grade ___9 _А_____ date:
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The topics of the lesson: |
Universal law of gravitation.. |
time |
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Previous lesson |
Laws of Newton |
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The aims of the lesson: |
- know the law of universal gravitation - apply the formula of gravitation and use it for problem solving |
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Сабақтың барысы: |
Starting lesson Good morning, everybody I’ve got two lessons with you each week Settle down now so we can start Who is absent today? I hope you are all ready for your Physics lesson |
2 min |
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Asking the homework, : |
Жеке жұмыс формасы: Сәйкестендіру тесті:
2)
3)
Өзін-өзі бағалау парағы таратылып, бағаланады. Әр оқушы жинаған баллдары арқылы бейджиктері арқылы көшбасшы оқушы анықталады. 5-баллдық жүйе бойынша бағаланады. Барлығы дұрыс болса – 5 балл,1 және 2 қате – 3 балл, 3 және 4 қате – 1 балл, Мүмкін болатын ең жоғары балл – 20. |
10 min |
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Brain storming. Each student must write the answering down on your copybook. 1. Does Earth attract a light? Why? «Attracting the Planets» video lesson to show to students. 2. Why does Earth attract you? Explain the lesson Activity – 1 Дене массасын 80 кг деп алып әр планетада гравитациялық тарту күшін тап ? 1. Mercury 2. Venus 3. Earth 4. Mars 5.Moon 6. Jupiter Activity -2 Find the gravity acceleration (еркін түсу үдеуі) of each planet using the meaning of which showing on the table 1.
Task 1.Why is the weight of a body different at the poles and at the equator of the Earth ? 2. Is it true that the Earth and the Moon apply ‘equal and opposite ‘ forces upon each other? Since it has a smaller mass, why does the Moon not crash into the Earth? 3. If the mass of the Earth is 6·1024kg, and the mass of the Moon is 7·1022kg and the distance between them is 384000 km, calculate gravitational force acting between them (Take G=6,67·10-11N·m2/kg2) Answer: 2·1018 N 4.What is the gravitational force acting on two men, one weighing 80 kg and the other weighing 90 kg , who are standing 3 meters away from each other (Take G=6,67·10-11N·m2/kg2) Answer: 53,4·10-9N 5. What is the ratio of the weight of a rocket of mass 1800 kg on the Earth to the gravitational force acting on it when it is at a distance equal to the Earth’s radius, above the Earth? Answer: 4 |
5 min
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Бағалау: |
Өзін-өзі бағалау, бірін-бірі бағалау, критериалды бағалау, |
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To homework: |
Answer the Literacy on p 71 |
1 мин |
ДОЖЖО_______ Т. М. Сапарбекова
Task
1.Why is the weight of a body different at the poles and at the equator of the Earth ?
2. Is it true that the Earth and the Moon apply ‘equal and opposite ‘ forces upon each other? Since it has a smaller mass, why does the Moon not crash into the Earth?
3. If the mass of the Earth is 6·1024kg, and the mass of the Moon is 7·1022kg and the distance between them is 384000 km, calculate gravitational force acting between them (Take G=6,67·10-11N·m2/kg2) Answer: 2·1018 N
4.What is the gravitational force acting on two men, one weighing 80 kg and the other weighing 90 kg , who are standing 3 meters away from each other (Take G=6,67·10-11N·m2/kg2) Answer: 53,4·10-9N
5. What is the ratio of the weight of a rocket of mass 1800 kg on the Earth to the gravitational force acting on it when it is at a distance equal to the Earth’s radius, above the Earth? Answer: 4
Task
1.Why is the weight of a body different at the poles and at the equator of the Earth ?
2. Is it true that the Earth and the Moon apply ‘equal and opposite ‘ forces upon each other? Since it has a smaller mass, why does the Moon not crash into the Earth?
3. If the mass of the Earth is 6·1024kg, and the mass of the Moon is 7·1022kg and the distance between them is 384000 km, calculate gravitational force acting between them (Take G=6,67·10-11N·m2/kg2) Answer: 2·1018 N
4.What is the gravitational force acting on two men, one weighing 80 kg and the other weighing 90 kg , who are standing 3 meters away from each other (Take G=6,67·10-11N·m2/kg2) Answer: 53,4·10-9N
5. What is the ratio of the weight of a rocket of mass 1800 kg on the Earth to the gravitational force acting on it when it is at a distance equal to the Earth’s radius, above the Earth? Answer: 4
Task
1.Why is the weight of a body different at the poles and at the equator of the Earth ?
2. Is it true that the Earth and the Moon apply ‘equal and opposite ‘ forces upon each other? Since it has a smaller mass, why does the Moon not crash into the Earth?
3. If the mass of the Earth is 6·1024kg, and the mass of the Moon is 7·1022kg and the distance between them is 384000 km, calculate gravitational force acting between them (Take G=6,67·10-11N·m2/kg2) Answer: 2·1018 N
4.What is the gravitational force acting on two men, one weighing 80 kg and the other weighing 90 kg , who are standing 3 meters away from each other (Take G=6,67·10-11N·m2/kg2) Answer: 53,4·10-9N
5. What is the ratio of the weight of a rocket of mass 1800 kg on the Earth to the gravitational force acting on it when it is at a distance equal to the Earth’s radius, above the Earth? Answer: 4
Task
1.Why is the weight of a body different at the poles and at the equator of the Earth ?
2. Is it true that the Earth and the Moon apply ‘equal and opposite ‘ forces upon each other? Since it has a smaller mass, why does the Moon not crash into the Earth?
3. If the mass of the Earth is 6·1024kg, and the mass of the Moon is 7·1022kg and the distance between them is 384000 km, calculate gravitational force acting between them (Take G=6,67·10-11N·m2/kg2) Answer: 2·1018 N
4.What is the gravitational force acting on two men, one weighing 80 kg and the other weighing 90 kg , who are standing 3 meters away from each other (Take G=6,67·10-11N·m2/kg2) Answer: 53,4·10-9N
5. What is the ratio of the weight of a rocket of mass 1800 kg on the Earth to the gravitational force acting on it when it is at a distance equal to the Earth’s radius, above the Earth? Answer: 4
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