1. DO NOW 1. ______deepest part of the ocean floor (ocean floor) 2. ______ type of convergent plate boundary where 2 plates collide and form mountains (graphic organizer) 3. ______layer of the mantle that is made of molten rock that the lithosphere floats on (layers of Earth) 4. ______planting trees around a field to prevent erosion (soil conservation) 5. ______ causes tides (tides)

2. Earthquakes Key Questions 1. What is seismology? 2. What is a seismologist? 3. What is a seismograph? 4. What is a seismogram? 5. What is the Richtor Scale? 6. What is the Moho? 7. Why does the west coast of the United States have more earthquakes?

3. 1. Seismology-study of earthquakes 1. Seismology-study of earthquakes 2. Seismologist-scientist that studies earthquakes 2. Seismologist-scientist that studies earthquakes 3. Seismograph-instruments located at or near Earth’s surface that record seismic waves 3. Seismograph-instruments located at or near Earth’s surface that record seismic waves 4. Seismogram-tracing of earthquake motion created by a seismograph 4. Seismogram-tracing of earthquake motion created by a seismograph 5. Richtor Scale-scale used to measure an earthquakes strength 5. Richtor Scale-scale used to measure an earthquakes strength 6. Moho-the boundary between the crust and mantle where seismic waves increase in speed 6. Moho-the boundary between the crust and mantle where seismic waves increase in speed 7. The west coast has more earthquakes because it is in the Ring of Fire on a plate boundary 7. The west coast has more earthquakes because it is in the Ring of Fire on a plate boundary

4. Seismograph Lab 1. Wrap the paper around a pencil and hold the pencil on each end 1. Wrap the paper around a pencil and hold the pencil on each end 2. Put another pencil on top of the paper 2. Put another pencil on top of the paper 3. Pull the end of the paper slowly 3. Pull the end of the paper slowly 4. Move the book back and forth 4. Move the book back and forth

5. Seismograph Lab 1. What instrument did your group create? 1. What instrument did your group create? 2. What did the pen mark represent? 2. What did the pen mark represent? 3. How did the line on the paper change from gentle shaking to stronger shaking? 3. How did the line on the paper change from gentle shaking to stronger shaking?

6. Words for Crossword Puzzle pg 196-213 Seismic waves S waves Seismic waves S waves P waves elastic rebound P waves elastic rebound Seismology shadow zone Seismology shadow zone Focus epicenter Focus epicenter Fault moho Fault moho Seismograph gap hypothesis Seismograph gap hypothesis Seismogram seismic gap Seismogram seismic gap deformation deformation