【People's Education Press】High School Physics Elective Compulsory Volume 1

📚 Content Summary

This textbook is for the first volume of elective compulsory physics in ordinary high schools, delving deeply into core areas of physics such as momentum conservation, mechanical vibrations, mechanical waves, and optics. Through theoretical explanations, experimental investigations, example analyses, and post-lesson exercises, it helps students develop systematic physical concepts and scientific thinking.

Explore the rhythm of momentum and waves—unlock advanced chapters of scientific discovery.

Author: AI Tutor

🎯 Learning Objectives

1. Understand the vector nature of momentum and impulse, and apply the impulse-momentum theorem to explain cushioning phenomena in daily life.
2. Master the conditions under which the law of conservation of momentum holds, and solve one-dimensional collision problems.
3. Use experimental data analysis (e.g., tape analysis) to verify the law of conservation of momentum and investigate energy transformations during collisions.
4. Grasp the characteristics of simple harmonic motion: identify simple harmonic motion, understand the physical meaning of displacement-time graphs (x-t graphs), and perform quantitative calculations using relevant formulas.
5. Understand dynamics and energy principles: clarify the concept of restoring force (F = -kx), and analyze energy transformations and mechanical energy conservation during oscillations.
6. Application and experimental inquiry: master the period formula for a simple pendulum, learn how to measure gravitational acceleration through experiments, and understand the conditions for forced vibration and resonance and their applications in everyday life.
7. Comprehension and modeling: explain the mechanism of mechanical wave formation, distinguish between particle vibration and wave propagation, and skillfully read and draw simple harmonic wave diagrams.
8. Quantitative analysis: master the formula v = \lambda f = \frac{\lambda}{T}, and solve problems involving multiple solutions and wave speed calculations during wave propagation.
9. Phenomenon explanation: identify and explain wave reflection, refraction, diffraction, and interference phenomena, and understand the causes and applications of the Doppler effect.
10. Master Snell’s law and the concept of refractive index: measure the refractive index of glass experimentally and solve practical optical path calculation problems.

🔹 Lesson 1: Momentum and Its Conservation Law

Overview: This lesson covers the fundamental concepts of momentum and its foundational role in physics. Starting from the definition of momentum, it explores the relationship between impulse and change in momentum (impulse-momentum theorem), extending to the law of conservation of momentum in multi-body systems. Through experimental verification, classification of collisions (elastic vs. inelastic), and applications of recoil (e.g., rockets), it builds a complete theoretical framework for momentum.

Learning Outcomes:

• Understand the vector nature of momentum and impulse, and apply the impulse-momentum theorem to explain cushioning phenomena in real-life situations.
• Master the conditions for the validity of the law of conservation of momentum, and solve one-dimensional collision problems.
• Use experimental data analysis (e.g., tape analysis) to verify the law of conservation of momentum and investigate energy transformation during collisions.

🔹 Lesson 2: Characteristics and Laws of Mechanical Vibrations

Overview: This lesson guides students to deeply understand the physical properties and mathematical laws of mechanical vibrations through idealized models (spring oscillator, simple pendulum). The content spans from kinematic descriptions of simple harmonic motion (amplitude, period, frequency, phase, and graphical representation) to dynamic analysis (restoring force and energy conservation), culminating in experimental applications of the simple pendulum and the study of forced vibration and resonance.

Learning Outcomes:

• Master the characteristics of simple harmonic motion: identify simple harmonic motion, understand the physical significance of displacement-time graphs (x-t graphs), and perform quantitative calculations using relevant formulas.
• Understand dynamics and energy principles: clearly define the concept of restoring force (F = -kx), and analyze energy transformations and mechanical energy conservation during oscillation.
• Application and experimental inquiry: master the period formula for a simple pendulum, learn to measure gravitational acceleration experimentally, and understand the conditions for forced vibration and resonance and their applications in daily life.

🔹 Lesson 3: Propagation and Interference of Mechanical Waves

Overview: This instructional design covers a comprehensive knowledge system of mechanical waves—from generation and description to complex phenomena (interference, diffraction, Doppler effect). Emphasis lies on understanding that mechanical waves are the propagation of vibrational patterns through a medium, mastering the quantitative relationship among wavelength, frequency, and wave speed, and analyzing particle motion patterns and unique wave phenomena using wave graphs (y-x graphs).

Learning Outcomes:

• Comprehension and modeling: explain the mechanism of mechanical wave formation, distinguish between particle vibration and wave propagation, and skillfully read and draw simple harmonic wave diagrams.
• Quantitative analysis: master the formula v = \lambda f = \frac{\lambda}{T}, and solve problems involving multiple solutions and wave speed calculations during wave propagation.
• Phenomenon explanation: identify and explain wave reflection, refraction, diffraction, and interference phenomena, and understand the causes and applications of the Doppler effect.

🔹 Lesson 4: Refraction of Light and Exploration of Wave Optics

Overview: This instructional design covers core topics in geometric and physical optics. Starting from Snell’s law of refraction, it explores total internal reflection and its applications in modern communication (optical fibers); it then transitions into the study of light's wave nature, focusing on double-slit interference, thin-film interference, diffraction phenomena, polarization of light, and laser characteristics, revealing the wave-particle duality of light.

Learning Outcomes:

• Master Snell’s law and the concept of refractive index: measure the refractive index of glass experimentally and solve practical optical path calculation problems.
• Understand total internal reflection and its applications: grasp the conditions for total internal reflection, comprehend the concept of critical angle, and understand the principle behind fiber-optic communication.
• Investigate interference and diffraction of light: understand the mechanism behind the formation of interference fringes in double-slit experiments, master the formula relating fringe spacing to wavelength, and apply thin-film interference to explain physical phenomena.

🔹 Lesson 5: Practical Research Project in Physics

Overview: This session focuses on the full process of conducting a high school physics "research project," aiming to enhance students’ scientific inquiry skills through independent topic selection, planning, execution, and summarization. The content covers the core workflow from identifying a research topic to writing a final report, emphasizing the integrated application of physics knowledge in solving real-world problems.

Learning Outcomes:

• Independently or collaboratively identify a physics research topic with genuine investigative value, adhering to principles of scientific rigor and feasibility.
• Master the basic procedures of physics research projects, including literature review, developing a research plan, collecting and analyzing experimental data.
• Demonstrate the ability to write a standardized scientific report and effectively communicate research findings and reflections.