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Physics archive | Science | Khan Academy

Physics the study of matter, motion, energy, and force.

概览

收录于

2026年3月17日

学科与领域

earth-environment · forces-motion

年级范围

九年级（高一）–十二年级（高四）

页面类型

Article

简介

Khan Academy Physics Archive Topics

  • Classical Mechanics:
    • Newton's laws of motion
    • Normal force and contact force
    • Inclined planes and friction
  • Waves and Sound:
    • Introduction to mechanical waves
    • Sound
    • The Doppler effect
  • Electromagnetism:
    • Discovery of magnetism and magnetic fields
    • Measuring magnetic fields
  • Battery and Electrochemical Experiments:
    • Discovery of batteries (Zinc-copper reduction-oxidation cells)
    • Measurement techniques using galvanometers
    • Experimental variables: electrolyte type (acid, salt, water, vinegar), electrode distance, electrode surface area, and temperature
    • Polarity and electrode reversal
    • The relationship between batteries and electromagnetism
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