Saturday, October 10, 2009

WEEKLY VOCABULARY WORDS FOR 10/12/09

1. Hydroelectricty - electricity that is produced by flowing water.
2. photosphere - the lowest layer of the sun's atmosphere and the lays from which light is given off.
3. corona - the largest layer of the sun's atomsphere and extends millions of kilometers into space.
4. nebula - large cloud of gas and dust in the beginning of a star's life.
5. binary system - when two stars orbit each other.