Do Now!
• Imagine that you have just received news
that Charlotte is preparing for an
earthquake. If you had to prepare an
emergency kit, what would you include?
(Use complete sentences!)
Announcements:
• Unit 3 Test on Friday!
• Turn in all missing work!
• Unit 3 Table of Contents:
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Layers of the Earth foldable
Graham cracker lab
Volcano Group Jigsaw
Earthquake Presentation Notes
Locating Earthquakes Worksheet
Unit 3 Review + Vocabulary
Follow-up: Did you think of these things?
• First aid kit and instruction booklet
• Plastic tarp or a small tent
• Emergency ("space") blankets and one sleeping bag for
each family member
• At least one gallon of bottled water per person, per day.
For a 3-day supply, that adds up to three gallons of water
per person
• Enough canned or dried food for 3 days
• Can opener
• Flashlight (easily in reach)
• Battery-powered radio
• Spare batteries for everything (stored separately in
waterproof bags)
• Toilet paper, soap, toothpaste and toothbrushes, and
other personal supplies
• Multi-purpose dry chemical (Class ABC) fire extinguisher
• Any important medicine and supplies for infants, elderly
people, and others with special needs
Exit Ticket-Monday
1. What are the 3 different types of plate
boundaries?
2. Next to the 3 different types above, name
a land feature that is formed because of
the plate boundaries
3. What is viscosity?
4. Name and describe one of the types of
volcanoes.
Earthquakes!
SWBAT describe the anatomy of an earthquake and relate to
different types of plate boundaries.
Agenda
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Do Now + Review
Guided Notes
Group research
Class presentations
Exit Ticket
Haiti
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Earthquake example: Haiti, on January 12, 2010
How severe was this earthquake? 7.0 magnitude
What happens with a 7.0 magnitude earthquake?
What was the aftermath in Haiti?
Japan
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Earthquake example: Japan, on March 11, 2011
How severe was this earthquake?
What happens during a 9.0 magnitude earthquake?
What actually happened in Japan?
India
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Earthquake example: India, on September 18, 2011
How severe was this earthquake? 6.8 magnitude
What happens?
What actually happened?
What is an earthquake?
• An earthquake is the shaking of the ground due to
the movements of tectonic plates
ELASTIC REBOUND
Along a fault, energy
builds up in a rock
until it breaks and
releases energy.
This release of energy
causes an earthquake.
*Demo: Ruler, Rubber
Band
Elastic Rebound Hypothesis
• Definition: the gradual buildup, and release of
stress and strain, between tectonic plates which
leads to earthquakes
What Causes Earthquakes?
• As tectonic plates push,
pull or scrape against
each other, stress builds
up along faults until the
rocks finally move
• A fault is a break in the
Earth’s crust where
plates slide, push or
pull against each other
Parts of an Earthquake
The epicenter is the location on the surface of the Earth
directly above the focus. Surface waves move outward from
the epicenter.
The focus of an earthquake is the point INSIDE the Earth
where the earthquake starts. It is the place below the
earth’s surface where the rocks tear, come apart, or collide.
The fault is the break in the
crust where the earthquake occurs,
between two blocks of rock that
have moved past each other.
Seismograph
• The seismograph records ground movements
caused by earthquakes, explosions, or other
Earth-shaking phenomena.
Magnitudes and Energy of Earthquakes
Annual Numbers of EQs
What’s the message?
MOST of the energy is released by around 20 magnitude-7 and larger EQs
every year.
Seismic intensity is affected by rock type.
Amplitude of oscillation
Form a hypothesis about how would you expect the houses to react
during an EQ.
Seismic intensity is affected by rock type.
Amplitude of oscillation increasing
Aftershock
• An aftershock is a smaller earthquake that
occurs after a previous large earthquake, in the
same area of the main shock.
Group Presentations
• RULES: Listen to directions, arrange desks for group
work, and have one student read aloud the article. Once
finished, students will quietly discuss their article with
one another and decide who will present what
information.
• Each group will receive a packet of information. This
packet contains information about an earthquake that
has occurred in the past. Your group is responsible for
explaining the following information to the class about
your earthquake: focus, epicenter, magnitude, and
damage recorded.
• Each group member must present at least one piece of
information for the table speaking loudly and clearly so
that the class can hear
• http://library.thinkquest.org/TQ0311162/anatomy.htm
• http://dsc.discovery.com/guides/planetearth/earthquake/inte
ractive/interactive.html
• http://larryferlazzo.edublogs.org/2011/01/10/the-best-sitesfor-learning-about-earthquakes/
• http://teacher.scholastic.com/activities/wwatch/earthquakes/
• http://www.sciencecourseware.com/virtualearthquake/VQua
keExecute.html
Exit Ticket
• List and describe the 3 types of volcanoes.
• What three factors affect the viscosity of
lava/magma?
• What hypothesis explains how earthquakes
occur?
• Define the 3 parts of an earthquake (fault,
epicenter, focus)