aging
the organic process of growing older and showing the effects of increasing age |
air pressure
the pressure exerted by the atmosphere |
condensation
compression; the process of changing from a gaseous to a liquid or solid state |
evaporation
process of extracting moisture |
frequency
the number of occurrences within a given time period |
insect
small air-breathing arthropod |
instrument
tool; one used by another to accomplish a purpose; device used to produce music; legal document |
life cycle
the series of changes in the life of an organism, including reproduction |
matter
something that has mass and occupies space |
metamorphosis
marked change in appearance, character, condition, or function; major transformation |
molecule
the smallest particle of substance, having all the properties of that substance |
pitch
action or manner of throwing something |
reproduce
have offspring or young; duplicate; make a copy |
sound
sensation perceived by the ear; distinctive noise |
vibrate
shake, quiver; move or swing from side to side regularly |
vocal cord
either of two pairs of folds of mucous membrane projecting into the larynx |
volume
capacity; amount of space occupied by an object |