Student's Guide . 24th Edition . - M. : Education, 2010. — 242 s. — ISBN 978-5-09-023626-3. This problem solver has been tested by many years of practice in teaching physics at school, is included in the curriculum for all physics textbooks for grades 7-9 .. Initial information about physical bodies and their properties. Physical bodies . Physical phenomena . Measurement of physical quantities. Structure of matter. Movement of molecules and body temperature . Interaction of molecules. Three states of matter. Movement and interaction of bodies . Uniform and Uneven Straight-Line Movement. Circumferential motion . Inertness of bodies. Interaction of bodies. Mass of bodies. Density of substance. Gravitational phenomenon. Gravity . Newton's second law . Strength of elasticity . Weight. Power Measurement. Graphical image of forces. Addition and Decomposition of Forces. Body Impulse. Law of conservation of momentum. Friction force and motion resistance force. Pressure of solids, liquids and gases. Pressure of solids. Gas pressure . Particle mobility of liquids and gases. Pascal's Law . Hydraulic press. Pressure in liquids. Reported vessels. Atmospheric pressure . Pumps. Pressure gauges. Archimedes' Law . Work and power. Simple Mechanisms . Energy .. Mechanical work. Power. Levers. Blocks. Cpd Mechanisms. Energy . Balance of bodies. Mechanical Fluctuations and Waves . Fluctuations. Waves. Sound waves . Thermal phenomena. Internal Energy . Types of heat transfer. Quantity of heat . Specific Heat of Combustion of Fuel. Melting and hardening. Evaporation. Boiling. Heat engines. Humidity of air. Electrical phenomena. Electrification of bodies. Electric field . Structure of the atom . Electric current. Electrical circuit . Current strength. Voltage. Resistance. Ohm's Law . Calculation of conductor resistance. Serial connection of conductors. Parallel connection of conductors. Operation and power of current. Thermal action of current. Electromagnetic phenomena . Light phenomena. Sources of light. Properties of light. Light Spread. Reflection of light. The Mirror . Refractive light. Lenses. Structure of atom and atomic nucleus. Structure of the atom . Composition of the nucleus of the atom. Isotopes. Radioactive decay. Nuclear reactions . Elementary Particles. The relationship between energy and mass . Tables of physical quantities. Answers.