Monday, September 26, 2011

Weekly Vocabulary Words - 9/26/11

1.  Lithosphere - the outer part of the earth, consisting of the crust and upper mantle, approximately 100km (62 miles)

2.  Epoch - a division of geologic time that is a division of a period.

3.  Biosphere - the part of the earth and its atmosphere in which living organisms exist or is capable of supporting life.

4. Electromagnetic Radiation - energy transferred by radiation, especially by an electromagnetic wave.

5.  Sound - the sensation stimulated in the organs of hearing by such vibrations in the air or other medium.