DO NOW
1.
2.
3.
4.
5.
______deepest part of the ocean floor (ocean floor)
______ type of convergent plate boundary where 2
plates collide and form mountains (graphic organizer)
______layer of the mantle that is made of molten rock
that the lithosphere floats on (layers of Earth)
______planting trees around a field to prevent erosion
(soil conservation)
______ causes tides (tides)
Earthquakes Key Questions
1.
2.
3.
4.
5.
6.
7.
What is seismology?
What is a seismologist?
What is a seismograph?
What is a seismogram?
What is the Richtor Scale?
What is the Moho?
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 slowly
 4. 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
Seismic waves
 P waves
 Seismology
 Focus
 Fault
 Seismograph
 Seismogram
 deformation

pg 196-213
S waves
elastic rebound
shadow zone
epicenter
moho
gap hypothesis
seismic gap