Workbook in physics. 7th grade. Peryshkin A.V.

2nd ed., revised. and additional - M.: 2016. - 160 p.

This manual is fully consistent with the federal state educational standard(second generation). The workbook is a necessary component of the educational and methodological set with the textbook by A.V. Peryshkin "Physics. Grade 7". The publication contains materials by A.V. Peryshkin to each paragraph of the textbook for grade 7. Apart from compulsory exercises from the textbook, the "Workbook" includes many additional questions and tasks, as well as explanations of solutions typical tasks in physics. The assignments are provided directly in the "Workbook". The publication is addressed to physics teachers, students of grade 7, as well as those who are preparing for the Basic State Exam in Physics.

Format: pdf

The size: 21.7 MB

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CONTENT
INTRODUCTION
§ 1. What does physics study 6
§ 2. Some physical terms 8
§ 3. Observations and experiments 10
§ 4. Physical quantities. Measurement physical quantities 12
§ 5. Accuracy and error of measurements 16
§ 6. Physics and technology 18
CHAPTER 1. INITIAL INFORMATION ON THE STRUCTURE OF SUBSTANCE
§ 7. The structure of matter 20
§ 8. Molecules 21
§ 9. Brownian motion 22
§ 10. Diffusion in gases, liquids and solids ah 23
§ 11. Mutual attraction and repulsion of molecules 25
§ 12. Aggregate states substances 27
§ 13. Difference in molecular structure solids, liquids and gases 29
CHAPTER 2. INTERACTION OF BODIES
§ fourteen. mechanical movement 31
§ 15. Uniform and uneven movement 34
§ 16. Speed. Speed ​​units 35
§ 1 7. Calculation of the path and time of movement 41
§ 18. Inertia 46
§ 19. Interaction of bodies 47
§ 20. Body weight. Mass units 49
§ 21 Measurement of body weight on a balance 51
§ 22. Density of matter 52
§ 23. Calculation of mass and volume of a body by its density 56
§ 24. Strength 61
§ 25 The phenomenon of gravity. Gravity 63
§ 26. Strength of elasticity. Hooke's Law 65
§ 27. Body weight 67
§ 28. Units of force. Relationship between gravity and body mass 68
§ 29. Force of gravity on other planets. physical characteristics planets 71
§ 30. Dynamometer 72
§ 31 Addition of two forces directed along one straight line. Resultant force 73
§ 32. Force of friction 76
§ 33. Friction of rest 78
§ 34. Friction in nature and technology 79
CHAPTER 3. PRESSURE OF SOLID BODIES, LIQUIDS AND GASES
35. Pressure. Pressure units 80
36. Ways to reduce and increase pressure 83
§ 37. Gas pressure 85
§ 38. Transmission of pressure by liquids and gases. Pascal's Law 87
§ 39. Pressure in liquid and gas 89
§ 40. Calculation of liquid pressure on the bottom and walls of the vessel 90
§ 41. Communicating vessels 95
§ 42. Weight of air. Atmosphere pressure 98
§ 43. Why does it exist air envelope Lands 100
§ 44. Measurement of atmospheric pressure. Experience Torricelli 101
§ 45. Aneroid barometer 103
§ 46. Atmospheric pressure at different heights 104
§ 47. Manometers 106
§ 48. Piston liquid pump 108
§ 49. Hydraulic press 110
§ 50. The action of liquid and gas on a body immersed in them 113
§ 51. Archimedean force 115
§ 52. Swimming bodies 119
§ 53 Navigation of ships 124
§ 54 Aeronautics 126
CHAPTER 4. WORK AND POWER. ENERGY
Section 55. mechanical work. Units of work 129
§ 56. Power. Power units 132
§ 57. Simple mechanisms 136
§ 58. Lever. Balance of forces on the lever 137
§ 59. Moment of force 139
§ 60. Levers in technology, everyday life and nature 141
§ 61. Application of the lever balance rule to block 143
§ 62. Equality of work in the use simple mechanisms. The golden rule of mechanics 145
§ 63.1 Land of gravity of the body 148
§ 64. Conditions for the equilibrium of bodies 150
§ 65. Coefficient useful action mechanism 152
§ 66. Energy 155
§ 67. Potential and kinetic energy 156
§ 68. Transformation of one species mechanical energy in another 159

This manual fully complies with the federal state educational standard (second generation).
The workbook on physics is addressed to schoolchildren studying according to the textbook by A. V. Peryshkin “Physics. Grade 7 ", and is intended for classroom and homework. The edition includes theoretical questions, experimental tasks (experiments) and tasks. The workbook corresponds to the structure of the textbook: all the material is divided into 60 lessons in accordance with the paragraphs of the textbook, laboratory work and exercises are provided. After the condition of each problem in the notebook there is a place for solution.
Order No. 699 of the Ministry of Education and Science Russian Federation study guides Exam publishing houses are approved for use in educational institutions.

INITIAL INFORMATION ABOUT THE STRUCTURE OF THE SUBSTANCE.
The structure of matter. Molecules.
Class work. Conduct experiments.

The division of matter into tiny particles
The purpose of the experiment: to test the validity of the hypothesis that all bodies are composed of very small particles.
Equipment: five small vessels, potassium permanganate (potassium permanganate), a pointed match, a vessel with water.
Pour water into one small vessel. With the sharp end of a match, touch the potassium permanganate powder and lower it into a small vessel of water.
What are you watching?

Pour some of the colored water into another small vessel, add pure water to it.
What are you watching?

Explain the observed phenomenon.

Pour some water from the second small vessel into the third, add clean water to it.
What are you watching?
Explain the observed phenomenon.

TABLE OF CONTENTS
Introduction
Lesson 1. § 1-3. What does physics study. Some physical terms. Observations and experiments
Lesson 2. § 4-6. Physical quantities. Measurement of physical quantities. Accuracy and error of measurements. Physics and technology
Lesson 3 Laboratory work №1
Chapter 1. INITIAL INFORMATION
ON THE STRUCTURE OF SUBSTANCE
Lesson 4. § 7-8. The structure of matter. Molecules. Lab #2
Lesson 5. § 9-10. Brownian motion. Diffusion in gases, liquids and solids
Lesson 6. § 11. Mutual attraction and repulsion of molecules
Lesson 7. § 12-13. Aggregate states of matter. The difference in the molecular structure of solids, liquids and gases
Lesson 8
Chapter 2. INTERACTION OF BODIES
Lesson 9. § 14. Mechanical movement
Lesson 10. § 15-16. Uniform and uneven movement. Speed. Speed ​​units
Lesson 11
Lesson 12
Lesson 13. § 18. Inertia
Lesson 14
Lesson 15. § 20. Body weight. Mass units
Lesson 16. § 21. Measurement of body weight on the scales. Lab #3
Lesson 17. § 22. The density of matter. Lab #4
Lesson 18
Lesson 19
Lesson 20


Lesson 23




Lesson 28 Preparing for the test

Chapter 3. PRESSURE OF SOLID BODIES, LIQUIDS AND GASES


Lesson 32


Lesson 35


Lesson 38. §45-46. Aneroid barometer. Atmospheric pressure at different altitudes


Lesson 41

Lesson 43


Lesson 46
Lesson 47
Lesson 48 "Pressure of solids, liquids and gases". Preparing for the test
Lesson 49. Test on the topic "Pressure of solids, liquids and gases"
Chapter 4. WORK AND POWER. ENERGY
Lesson 50. § 55. Mechanical work. Units of work
Lesson 51 Power units
Lesson 52. §57-58. simple mechanisms. Lever arm. The balance of forces on the lever
Lesson 53 Lab #10
Lesson 54. § 60-61. Levers in technology, everyday life, nature. Applying the law of balance of the lever to the block
Lesson 55. § 62. Equality of work when using simple mechanisms. " Golden Rule mechanics"
Lesson 20
Lesson 21. § 25. The phenomenon of gravity. Gravity
Lesson 22 Hooke's law
Lesson 23
Lesson 24. § 28. Units of force. Relationship between gravity and body mass
Lesson 25. § 30. Dynamometer. Lab #6
Lesson 26. § 31. The addition of two forces directed along one straight line. Resultant force
Lesson 27. § 32-34. Friction force. Friction of rest. Friction in nature and technology. Lab #7
Lesson 28
Lesson 29
Chapter 5. PRESSURE OF SOLID BODIES, LIQUIDS AND GASES
Lesson 30. § 35. Pressure. Pressure units
Lesson 31
Lesson 32
Lesson 33. § 38-40. Transmission of pressure by liquids and gases. Pascal's law. Pressure in liquid and gas. Calculation of liquid pressure on the bottom and walls of the vessel
Lesson 34
Lesson 35
Lesson 36. § 42-43. Air weight. Atmosphere pressure. Earth's atmosphere
Lesson 37. § 44. Measurement of atmospheric pressure. The Torricelli Experience
Lesson 38. §45-46. Aneroid barometer. Atmospheric pressure at various altitudes
Lesson 39. §47-48. Pressure gauges. Piston liquid pump
Lesson 40
Lesson 41
Lesson 42. §50-51. The action of liquid and gas on a body immersed in them. Archimedean force
Lesson 43
Lesson 44
Lesson 45. §53-54. Sailing ships. Aeronautics
Lesson 56. § 63-65. The center of gravity of the body. Conditions for the equilibrium of bodies. The efficiency of the mechanism. Lab #11
Lesson 57 Preparing for the test
Lesson 58
Lesson 59. §66-67. Energy. Potential and kinetic energy
Lesson 60. § 68. The transformation of one type of mechanical energy into another.