jueves, 19 de agosto de 2010

Vocabulary 5

mass: the amount amount of matter in an object.

volume: the amount of space an object takes up.




weight:(on Earth) a measure of the force of gravity between Earth and an object.



density: a measure of how  tightly packed matter is; the amount of mass contained in a given volume.


buoyancy: the upward push on an object by the liquid (or gas) the object is placed in.


conduct: allow heat or electricity to flow through readily.


insulate: not allow heat or electricity to flow through readily.


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