CCEA A-Level Physics: Ultimate Revision Checklist | CCEA A-Level 物理：期末复习提纲

📚 CCEA A-Level Physics: Ultimate Revision Checklist | CCEA A-Level 物理：期末复习提纲

This comprehensive revision checklist covers the essential concepts, equations, and practical skills you need for CCEA A-Level Physics. Work through each section to identify strengths and weaknesses, and ensure you can apply every equation with confidence in the final exam.

本复习提纲全面覆盖了 CCEA A-Level 物理的核心概念、公式和实验技能。逐节检查可以帮助你发现强项与薄弱点，确保在期末考试中能够自信地应用每一个方程。

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1. Kinematics and Dynamics | 运动学与动力学

The equation for final velocity under constant acceleration is:

v = u + at

匀加速直线运动中，末速度由下式给出：v = u + at。

The displacement-time relation is:

s = ut + ½at²

位移与时间的关系为：s = ut + ½at²。

The equation linking initial and final velocities without time is:

v² = u² + 2as

无需时间的速度-位移方程：v² = u² + 2as。

The average velocity form of the displacement equation is:

s = ½(u + v)t

用平均速度表示的位移公式：s = ½(u + v)t。

Newton’s second law states that the net force acting on an object equals the rate of change of its momentum. For constant mass:

F = ma

牛顿第二定律指出物体所受合力等于其动量的变化率。对恒定质量：F = ma。

Momentum is the product of mass and velocity. Impulse equals the change in momentum:

p = mv, FΔt = Δp

动量等于质量与速度的乘积，冲量等于动量的变化：p = mv，FΔt = Δp。

In a closed system, total momentum is conserved:

Σmᵢuᵢ̅̅ = Σmᵢvᵢ̅̅

在封闭系统中，总动量守恒：Σmᵢuᵢ̅̅ = Σmᵢvᵢ̅̅。

For projectile motion, the horizontal component of velocity is constant, while the vertical motion obeys the SUVAT equations with a = g. The time of flight depends only on the vertical motion.

在抛体运动中，水平分速度保持不变，竖直方向遵循匀加速运动方程且 a = g。飞行时间仅由竖直运动决定。

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2. Energy, Work and Power | 能量、功和功率

Work done by a force is the product of the force and the displacement in the direction of the force:

W = F s cosθ

力做功等于力的大小与沿力方向的位移的乘积：W = F s cosθ。

Kinetic energy is the energy of a moving object:

Eᵕ = ½ m v²

动能是物体因运动而具有的能量：Eᵕ = ½ m v²。

Change in gravitational potential energy near the Earth’s surface:

ΔEₚ = m g Δh

在地球表面附近，重力势能的变化为：ΔEₚ = m g Δh。

If no external non-conservative forces act, total mechanical energy is conserved:

Eᵕ + Eₚ = constant

若没有非保守外力作用，系统的总机械能守恒：Eᵕ + Eₚ = 常数。

Power is the rate of doing work, and for a constant force moving at constant speed:

P = W / t = F v

功率是做功的速率，对于以恒定速度运动的恒定力：P = W / t = F v。

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3. Materials and Deformation | 材料与形变

Tensile stress is the force applied per unit cross-sectional area:

Stress = F / A

拉伸应力是单位横截面积上所受的力：应力 = F / A。

Tensile strain is the extension per unit original length:

Strain = ΔL / L

拉伸应变是单位原长上的伸长量：应变 = ΔL / L。

The Young modulus describes the stiffness of a material in the linear elastic region:

E = stress / strain = (F L) / (A ΔL)

杨氏模量描述材料在线弹性区的刚度：E = 应力 / 应变 = (F L) / (A ΔL)。

Hooke’s law states that extension is proportional to the applied force up to the limit of proportionality:

F = k x

胡克定律指出，在比例极限内，伸长量与施加的力成正比：F = k x。

The elastic potential energy stored in a stretched spring or wire is:

E = ½ F x = ½ k x²

拉伸的弹簧或金属丝中储存的弹性势能为：E = ½ F x = ½ k x²。

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4. Waves and Optics | 波与光学

All waves obey the wave equation linking speed, frequency and wavelength:

v = f λ

所有波都遵循波速、频率和波长的关系式：v = f λ。

When two waves meet, the resultant displacement is the vector sum of the individual displacements (superposition). Constructive interference occurs when the path difference is a whole number of wavelengths.

当两列波相遇时，合位移是各分位移的矢量叠加（叠加原理）。当波程差为波长的整数倍时发生相长干涉。

For Young’s double-slit experiment, the fringe spacing is given by:

λ = a x / D

杨氏双缝实验中，条纹间距满足：λ = a x / D，其中 a 为缝间距，x 为条纹间距，D 为屏到双缝的距离。

For a diffraction grating, maxima occur at angles given by:

d sinθ = n λ

对于衍射光栅，主极大满足：d sinθ = n λ，其中 d 为光栅常数，n 为级数。

Snell’s law describes refraction at a boundary between two media:

n₁ sinθ₁ = n₂ sinθ₂

斯涅耳定律描述光在两种介质界面的折射：n₁ sinθ₁ = n₂ sinθ₂。

Total internal reflection occurs when the angle of incidence exceeds the critical angle, given by:

sin C = 1 / n

当入射角大于临界角时发生全内反射，临界角满足：sin C = 1 / n。

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5. Quantum Phenomena and Photons | 量子现象与光子

The energy of a single photon is directly proportional to its frequency:

E = h f = h c / λ

单个光子的能量与其频率成正比：E = h f = h c / λ。

Einstein’s photoelectric equation relates photon energy, work function and maximum kinetic energy of emitted electrons:

h f = Φ + Eₖ(max)

爱因斯坦光电效应方程将光子能量、逸出功和逃逸电子的最大动能联系起来：h f = Φ + Eₖ(max)。

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