TOEFL語彙

planet outside our solar system

系外惑星；太陽系外惑星

interaction that can change motion or shape

力

part of structure transferring loads to ground

基礎；建物の基礎

motion under gravity without other significant forces

自由落下

number of repeated cycles per unit time

周波数；振動数

contact force opposing relative sliding or its tendency

摩擦力；摩擦

large gravitationally bound system of stars and other matter

銀河

large planet composed mainly of hydrogen and helium

巨大ガス惑星

toothed machine part transmitting motion

歯車

machine converting mechanical energy to electrical energy

発電機

gravitational interaction between physical bodies

引力；重力

operated by liquid pressure or flow

液圧の；水力の

resistance to change in velocity

慣性

limit electric current between objects or regions

絶縁する；絶縁処理を施す

material strongly limiting electric charge movement

絶縁体；絶縁材料

energy associated with motion

運動エネルギー

optical component redirecting light by refraction

レンズ

rigid member turning about a pivot

てこ；レバー

visible electromagnetic radiation

光；可視光

distance light travels in vacuum in one year

光年

energy emitted by a celestial object per unit time

光度；天体の放射出力

field describing magnetic influence in space

磁場；磁界

quantity measuring inertia of an object

質量

relating to machines or physical forces and motion

機械の；力学の

ratio of output force to input force

機械的倍率；力の増幅率

sum of kinetic and potential energy

力学的エネルギー

energy transfer by force along displacement

力学的な仕事

mass times velocity in classical mechanics

運動量

change of position relative to a reference

運動