RAP:1. ______deepest part of the ocean floor

(ocean floor)2. ______ type of convergent plate

boundary where 2 plates collide and form mountains (plate features)

3. ______layer of the mantle that is made of molten rock that the lithosphere floats on (layers of Earth)

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?

1. Seismology-study of earthquakes 2. Seismologist-scientist that studies

earthquakes 3. Seismograph-instruments located at or near

Earth’s surface that record seismic waves 4. Seismogram-tracing of earthquake motion

created by a seismograph 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 7. The west coast has more earthquakes

because it is in the Ring of Fire on a plate boundary

Seismograph Lab

1. Wrap the paper around a pencil and hold the pencil on each end

2. Put another pencil on top of the paper

3. Pull the end of the paper slowly4. Move the book back and forth

Seismograph Lab

1. What instrument did your group create?

2. What did the pen mark represent?

3. How did the line on the paper change from gentle shaking to stronger shaking?

Words for Crossword Puzzle pg 196-213

Seismic waves S waves

P waves elastic rebound

Seismology shadow zone

Focus epicenter

Fault moho

Seismograph gap hypothesis

Seismogram seismic gap

deformation