📚 IB OPH SB4 Student Cards: Waves Revision Essentials | IB OPH SB4 学习卡片：波动复习要点
These IB OPH SB4 student cards cover the wave topic as a set of quick-fire revision prompts. Use them to test definitions, equations, diagrams, and common exam traps.
这套 IB OPH SB4 学习卡片将波动专题整理成一组快速复习提示。你可以用它们自测定义、方程、图示和常见考试陷阱。
1. What Are SB4 Student Cards? | 什么是 SB4 学习卡片？
Student cards are portable revision tools. Each card should contain a clear question on one side and a concise answer on the other, so you can self-quiz without rereading the whole textbook.
学习卡片是一种便携式复习工具。每张卡片一面写清楚问题，另一面写简洁答案，这样你可以自测，而不用重读整本教材。
For waves, build cards for definitions, wave diagrams, equations such as v = f λ, and standard problems on reflection, refraction, interference, and standing waves.
对于波动部分，你可以制作涵盖定义、波形图、v = f λ 等方程，以及反射、折射、干涉和驻波标准题型的卡片。
2. Wave Terminology You Must Know | 必须掌握的波动术语
Before attempting calculations, you must be able to define the basic wave quantities and match them with their symbols and units.
在尝试计算之前，你必须能够定义基本波动量，并将它们与符号和单位对应起来。
| Quantity | 物理量 | Symbol | 符号 | Definition | 定义 | Unit | 单位 |
|---|---|---|---|
| Amplitude | 振幅 | A | Maximum displacement from equilibrium | 离开平衡位置的最大位移 | m |
| Wavelength | 波长 | λ | Distance between successive crests or compressions | 相邻波峰或密部之间的距离 | m |
| Frequency | 频率 | f | Number of cycles per second | 每秒完成的周期数 | Hz |
| Period | 周期 | T | 更多咨询请联系16621398022（同微信）
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