 gravity gravity
 cold cold
 light light
 atom atom
 magnet magnet
 amplitude amplitude
 quark quark
 adhesiveness adhesiveness
 balance balance
 pulley pulley
 shape shape
 center of mass center of mass
 chemical chemical
 compass compass
 crystal crystal
 crystal crystal
 stream stream
 density density
 voltage voltage
 electricity electricity
 transistor transistor
 electronics electronics
 pressure pressure
 gas gas
 impact impact
 space space
 laser laser
 level level
 liquid liquid
 microscope microscope
 mirror mirror
 movement movement
 wave wave
 physics physics
 optics optics
 plasma plasma
 radiation radiation
 reflection reflection
 resistor resistor
 telescope telescope
 sound sound
 spectrum spectrum
 value value
 wavelength wavelength
 distance distance
 measurement measurement
 smoke smoke
 steam steam
 thermometer thermometer
 battery battery |