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VOLCANOES AND
EARTHQUAKES
• Each dot on the map represents an Earth scientist’s
data. These dots most likely represent zones of
frequent
A.
B.
C.
D.
fossil correlations.
crustal activity.
hurricane paths.
meteor impacts.
Pg. 51-Title Page
• Write out the titles: Chapter 12
Earthquakes and Chapter 13 Volcanos.
• 3 pictures for EACH CHAPTER-that’s 6
total.
• 3 keywords for EACH CHAPTER-that’s 6
total.
• 3 colors
In: pg 52
Use the world earthquake map at
http://earthquake.usgs.gov/earthquakes/map/ to answer
the following questions.
1. On the map, what does each of the
following represent?
a. The dots
b. Red lines
2. Have there been any earthquakes in the
US in the last week?
3. Where?
Thru 1: pg 53
Mapping Earthquakes and Volcanoes
Activity.
• Complete the map—please make sure
you have 2 colors of pen or pencil!
• Answer the questions at the bottom
Out
• The ring of fire is an area around the Pacific
Ocean with a lot of earthquake and volcano
activity.
1. What is the Ring of Fire?
2. Why do you think there are so many
earthquakes and volcanoes in the Ring of Fire?
Thurs. 4/3 and Fri. 4/4
• Quiz #1 today-get out paper and your
INB.
Quiz #1
1. What is the title of ch. 11? Pg 43
2. _____ is the balance between pull of gravity and the
upward push of the asthenosphere on the
lithospheric plates. Pg 45
3. In tension stress, the crust is _____ ____. Pg 45
4. A(n)_____ is a fold in the crust that folds upwards. Pg.
45
5. The ______ wall is the the rock above the fault. Pg 45
6. In a _____fault, the hanging wall moves up. Pg. 45
7. The Appalachian Mountains are an example of a
mountain _______. Pg. 45
8. What is the answer to #6 of the IN? Pg. 48
9. What is the answer to #10 of the IN? Pg 48
10. What was the name of the movie? Pg 49
Major earthquakes occur
A.
B.
C.
D.
in specific belts within the crust.
along the mantle-core boundary.
in the centers of the continents.
randomly over the Earth’s surface.
In: pg 54
1. What state is first for earthquake
activity?
2. Out of the 50 states, where do you think
Nevada ranks?
Chapter 12 Earthquakes
Thru 1: Pg. 55
Cornell Notes
What are Earthquakes?
• Earthquake-sudden movement of the
ground caused by the release of energy
when the rocks move along a fault.
– Fault-a break in rock where movement
occurs.
Where do most earthquakes
occur?
• Most earthquakes occur at plate
boundaries, where there is a lot of stress.
• Some happen at fault zones
Anatomy of an earthquake
• Focus-where the first movement occurs
in the earth’s crust.
• Epicenter-point on the earth’s surface
directly above the focus.
Seismic Waves
• Body waves-travel thru the earth’s interior.
Includes:
– P waves-primary
• Fastest waves, first to be detected.
• Move back and forth parallel to the motion of
the wave.
• Move thru solids, liquids and gases.
– S waves-secondary
• Second fastest
• Move perpendicular to motion of wave.
• Move only thru solids
• Surface waves-travel along the earth’s surface.
– Slowest moving waves
– Move rock side to side and up and down
– Cause the most damage during earthquakes
Shadow Zones
Seismology
• Seismology is
the study of
earthquakes.
• Seismographinstrument that
records seismic
waves.
Measuring Earthquakes
• Magnitudestrength of an
earthquake.
– Richter scale
• Intensity-how
much damage
an earthquake
causes.
– Mercalli scale
Now!
• Do 3 questions and a 3 sentence
summary.
Thru 2:
Pg. 56
3 Column Vocab
1. Earthquake
2. Focus
3. Epicenter
4. Body wave
5. Surface wave
6. P wave
Pg. 57
7. S wave
8. Shadow zone
9. Fault zone
10. Seismograph
11. Magnitude
12. Intensity
Out
According to the Richter
Scale, what is the
1. Weakest number of
earthquake?
2. Strongest number of
earthquake?
3. How often do small
earthquakes
happen?
4. How often do #10
earthquakes
happen?
Mon. 4/7 and Tues. 4/8
• A large belt of mountain ranges and
volcanoes surrounds the Pacific Ocean and
is often referred to as the Ring of Fire. What
events are most closely associated with
these mountains and volcanoes?
A.
B.
C.
D.
Earthquakes
Hurricanes
Tornadoes
Blizzards
In: Pg. 58
• Use the notes on Pg. 55 to answer the questions.
1. Where do most earthquakes occur?
2. The ______is the point in the crust where movement
occurs first.
3. ______ waves can travel through the earth’s interior.
4. _______ waves move perpendicular to the motion of
the wave.
5. _______ waves can move through solids, liquids and
gases.
6. _______ waves cause the most damage during
earthquakes.
7. _______is the study of earthquakes.
8. The Richter Scale measures the _______ of an
earthquake.
Thru 1: Pg. 59
Article: Disaster in Japan.
• Tape in the questions and answer them
on the LINED paper
video
Thru 2
Pg. 60
Analysis Questions:
Define:
1. Magma
2. Lava
3. Pyroclastic material
4. What are the 5 types
of pyroclastic
material?
5. How is pyroclastic
material classified?
Pg. 61
Types of Volcanoes Tree Map
pg. 327-328
Types of Volcanoes
Shield
• Describe the Shape
• Type of eruption
• Picture-colored
• Mount Saint Helens Eruption
• Mount Etna Eruption
• Nat. Geo.
Out
• What is the difference
between magma and lava?
According to the diagram.
1. What is the difference between magma and lava?
2. What is the “storage area” for magma called?
3. What is a crater?
4. What is a vent?
5. What is erupted from a volcano?
Wed. 4/9 and Thurs. 4/10
• Test and INB check next class.
• Study Guide due next class.
• A cone formed only by solid fragments
built up around the volcano opening is a
a. Shield cone
b. Cinder cone
c. Composite volcano
d. Stratovolcano
In: Pg. 62
Read the definitions and label the
diagram.
Thru 1: pg. 63
13.2 Volcanic Eruptions CLOZE
Do your study guide!
Out
1. What is a caldera?
2. Explain how Crater Lake formed.
Crater Lake, Oregon
Fri. 4/11 and Mon. 4/14
This is a map of all the known faults in the Las Vegas Valley. The brown lines are Eastdipping normal faults. The yellow line is a West-dipping normal fault, and the green
lines are inactive faults.