Even classes due 2/18/11
Read 505-510 and describe how seismic waves have provided evidence of the Earth's interior structure and composition.
PERIOD 1, 3, 4 & 6; none of you pointed out that the Mercalli and Richter scales were not part of the previous hw reading. And I erred by assigning as DSW describing these scales instead of assigning the description as hw. I will not grade you down for the DSW, you do need to answer the above hw based on the previous HW read and be sure to read p505-510.
Odd classes due 2/28/11
PERIOD 5; a student noted that the DSW on Describing the Richter and Mercalli scales was not in the previous hw reading selection. In 5th period your DSW was to describe seismic waves as evidential support for Earth's interior structure and composition. You are to do the reading of p 505-510 and describe the difference between the Richter and Mercalli scales; you do not need to copy the scales.
