Physics vocabulary is not a random pile of words to be hauled into memory one at a time — it is a construction kit. Nearly every technical term is built from a small set of Greek and Latin parts snapped together. Know that centri- means center and -petal means seeking, and centripetal announces itself — no more confusing centripetal and centrifugal on a test. Memorizing words is linear; learning roots is exponential — thirty parts unlock several hundred words.
Keep a running roots-and-symbols page at the back of the lab notebook; add to it every time a new prefix, suffix, or unit symbol appears. When you hit an unfamiliar term, break it apart out loud and guess the meaning before you look it up — that retrieval is what fixes the part in memory.
| Part | Meaning | Example & what it tells you |
|---|---|---|
| kine- / -matics | motion | kinematics — the study of motion without its causes. |
| dyna- | force, power | dynamics — motion and the forces that cause it. |
| veloc- | swift | velocity — speed with a direction attached. |
| accel- | to hasten | acceleration — how fast velocity itself is changing. |
| grav- | heavy | gravitation — the mutual pull between masses. |
| centri- / centro- | center | centripetal — a force pointing toward the center. |
| -petal / -fugal | seeking / fleeing | petal seeks the center, fugal flees it. |
| peri- / apo- | near / far | perigee is an orbit’s nearest point, apogee its farthest. |
| iso- | equal, same | isochronous — each swing takes an equal time. |
| chrono- / -chron- | time | chronometer — a clock that keeps precise time. |
| thermo- / -thermic | heat | thermometer — anything to do with heat. |
| Part | Meaning | Example & what it tells you |
|---|---|---|
| baro- | weight, pressure | barometer — measures the pressure of the air. |
| -stat / statics | standing, at rest | statics — bodies at rest or forces in balance. |
| flu- / fluid- | to flow | fluid — anything that flows: a liquid or a gas. |
| dens- | thick, packed | density — mass packed into a given volume. |
| torqu- | to twist | torque — the twisting effect of a force about a pivot. |
| ampl- / -tude | size, magnitude | amplitude — the greatest displacement from rest. |
| kilo-, milli-, micro- | ×1000, ÷1000, ÷million | kilometer, millisecond — SI prefixes that scale a unit. |
| -metry / -meter | measure | odometer — a tool that measures distance. |
| SI symbols | the base units | m, kg, s — plus N, J, W, Pa, Hz built from them. |
Don’t swallow the table in one sitting. Keep this page open during reading and lab; each time you meet an unfamiliar term, name the parts, guess the meaning, then check. The habit leaves your effort free for the part of physics that actually rewards it — the problem-solving.