como esta mi blog

domingo, 22 de agosto de 2010

vocabulary#3

mass: the 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 toghtly 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 ob ject is placed in.

conduct: allow heat or elctricity to flow through it readily.


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

No hay comentarios:

Publicar un comentario