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

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

This benefit fully complies 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. Peryshkina "Physics. 7th grade." The publication contains materials by A.V. Peryshkin to each paragraph of the textbook for 7th grade. In addition to the required exercises from the textbook, the Workbook includes many additional questions and tasks, as well as explanations of solutions typical tasks in physics. Completion of tasks is provided directly in the “Workbook”. The publication is addressed to physics teachers, 7th grade students, as well as those preparing for the Main State Exam in Physics.

Format: pdf

Size: 21.7 MB

Watch, download: drive.google

CONTENT
INTRODUCTION
§ 1. What physics studies 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 ABOUT THE STRUCTURE OF MATTER
§ 7. 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
§ 14. 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. Units of mass 49
§ 21 Measuring body weight on scales 51
§ 22. Density of matter 52
§ 23. Calculation of the mass and volume of a body based on its density 56
§ 24.Power 61
§ 25 The phenomenon of gravity. Gravity 63
§ 26. Elastic force. Hooke's Law 65
§ 27. Body weight 67
§ 28. Units of force. The relationship between gravity and body weight 68
§ 29. Gravity on other planets. Physical characteristics planets 71
§ 30. Dynamometer 72
§ 31 Addition of two forces directed in one straight line. Resultant force 73
§ 32. Friction force 76
§ 33. Static friction 78
§ 34. Friction in nature and technology 79
CHAPTER 3. PRESSURE OF SOLIDS, LIQUIDS AND GASES
35.Pressure. Pressure units 80
36.Methods of reducing and increasing 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 a vessel 90
§ 41. Communicating vessels 95
§ 42. Weight of air. Atmospheric pressure 98
§ 43. Why exists air envelope Earth 100
§ 44. Measurement of atmospheric pressure. Torricelli Experience 101
§ 45. Aneroid barometer 103
§ 46. Atmospheric pressure at various heights 104
§ 47. Pressure gauges 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 power 115
§ 52. Floating bodies 119
§ 53. Navigation of ships 124
§ 54 Aeronautics 126
CHAPTER 4. OPERATION AND POWER. ENERGY
§ 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 equilibrium rule to block 143
§ 62. Equality of work when using simple mechanisms. "Golden Rule" of Mechanics 145
§ 63.1 Body gravity lentil 148
§ 64. Conditions for equilibrium of bodies 150
§ 65. Coefficient useful action mechanism 152
§ 66. Energy 155
§ 67. Potential and kinetic energy 156
§ 68. Transformation of one kind mechanical energy in another 159

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

INITIAL INFORMATION ABOUT THE STRUCTURE OF SUBSTANCE.
Structure of matter. Molecules.
Work in the classroom. Conduct experiments.

Dividing matter into small particles
The purpose of the experiment: to test the reliability of the hypothesis that all bodies consist of very small particles.
Equipment: five small vessels, potassium permanganate (potassium permanganate), a sharpened match, a vessel with water.
Pour water into one small container. With the sharp end of a match, touch the potassium permanganate powder and lower it into a small vessel with water.
What are you observing?

Pour some of the colored water into another small vessel and add clean water to it.
What are you observing?

Explain the observed phenomenon.

From the second small vessel, pour some water into the third, add clean water to it.
What are you observing?
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
ABOUT THE STRUCTURE OF MATTER
Lesson 4. § 7-8. Structure of matter. Molecules. Laboratory work No. 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. Differences in the molecular structure of solids, liquids and gases
Lesson 8. General lesson on the topic “Initial information about the structure of matter”
Chapter 2. INTERACTION OF BODIES
Lesson 9. § 14. Mechanical motion
Lesson 10. § 15-16. Uniform and uneven movement. Speed. Speed ​​units
Lesson 11. § 17. Calculation of path and time of movement
Lesson 12. Motion graphs
Lesson 13. § 18. Inertia
Lesson 14. § 19. Interaction of bodies
Lesson 15. § 20. Body weight. Units of mass
Lesson 16. § 21. Measuring body weight on scales. Laboratory work No. 3
Lesson 17. § 22. Density of matter. Laboratory work No. 4
Lesson 18. Laboratory work No. 5
Lesson 19. § 23. Calculation of the mass and volume of a body based on its density
Lesson 20. § 24. Strength


Lesson 23. § 27. Body weight




Lesson 28. General lesson on the topic “Interaction of bodies.” Preparing for the test

Chapter 3. PRESSURE OF SOLIDS, LIQUIDS AND GASES


Lesson 32. § 37. Gas pressure


Lesson 35


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


Lesson 41. Solving problems

Lesson 43. § 52. Floating bodies


Lesson 46. Laboratory work No. 9
Lesson 47. Solving problems
Lesson 48. General lesson on the topic. “Pressure of solids, liquids and gases.” Preparing for the test
Lesson 49 Test on the topic “Pressure of solids, liquids and gases”
Chapter 4. OPERATION AND POWER. ENERGY
Lesson 50. § 55. Mechanical work. Units of work
Lesson 51. § 56. Power. Power units
Lesson 52. § 57-58. Simple mechanisms. Lever. Balance of forces on the lever
Lesson 53. § 59. Moment of force. Laboratory work No. 10
Lesson 54. § 60-61. Levers in technology, everyday life, nature. Application of the law of equilibrium of a lever to a block
Lesson 55. § 62. Equality of work when using simple mechanisms. " Golden rule mechanics"
Lesson 20. § 24. Strength
Lesson 21. § 25. The phenomenon of gravity. Gravity
Lesson 22. § 26. Elastic force. Hooke's law
Lesson 23. § 27. Body weight
Lesson 24. § 28. Units of force. Relationship between gravity and body weight
Lesson 25. § 30. Dynamometer. Laboratory work No. 6
Lesson 26. § 31. Addition of two forces directed in one straight line. Resultant force
Lesson 27. § 32-34. Friction force. Rest friction. Friction in nature and technology. Laboratory work No. 7
Lesson 28. General lesson on the topic “Interaction of bodies” Preparing for the test
Lesson 29. Test on the topic “Interaction of bodies”
Chapter 5. PRESSURE OF SOLIDS, LIQUIDS AND GASES
Lesson 30. § 35. Pressure. Pressure units
Lesson 31. § 36. Methods of reducing and increasing pressure
Lesson 32. § 37. Gas pressure
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 a vessel
Lesson 34. § 41. Communicating vessels
Lesson 35
Lesson 36. § 42-43. Air weight. Atmospheric pressure. Earth's atmosphere
Lesson 37. § 44. Measuring atmospheric pressure. Torricelli experience
Lesson 38. § 45-46. Aneroid barometer. Atmospheric pressure at different altitudes
Lesson 39. § 47-48. Pressure gauges. Piston Liquid Pump
Lesson 40. § 49. Hydraulic press
Lesson 41. Solving problems
Lesson 42. § 50-51. The action of liquid and gas on a body immersed in them. Archimedes' power
Lesson 43. § 52. Floating bodies
Lesson 44. Laboratory work No. 8
Lesson 45. § 53-54. Sailing of ships. Aeronautics
Lesson 56. § 63-65. Center of gravity of the body. Conditions for equilibrium of bodies. Efficiency of the mechanism. Laboratory work No. 11
Lesson 57. General lesson on the topic “Work and power.” Preparing for the test
Lesson 58
Lesson 59. § 66-67. Energy. Potential and kinetic energy
Lesson 60. § 68. Conversion of one type of mechanical energy into another.