Lab 1 Oreo tectonics online supplement
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University Of Georgia *
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Geology
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Feb 20, 2024
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Lab 1: Plate Tectonics Online Supplement
Student Name: Emily Matthews
(For TA Use) Raw score_____/30
Points______/100
To complete this online supplement, find supplied materials in eLC in the folder titled Lab 1: Plate Tectonics and Oreos, which include the power point you will use in class and may reference for this activity.
Use a word processor to modify this file and type in your responses. Whatever word processor you use,
save your work as a PDF or Word Doc and upload it to eLC.
Write down questions that develop and ask your TA during your lab time as scheduled for the normal
meeting time of the lab or via email.
Familiarize yourself with the slides in eLC
and watch any videos linked
. Linked videos are in your slideshows AND on this worksheet. Answer the quesions below to receive credit. Items are not necessarily in order, so you will have to do some searching and remember where you have found things and go back to them.
Earth’s processes are going on all day every day. Some we can readily see in action, and others are occurring slowly enough that human observations are not adequate. The big picture of how our earth works starts with the broad idea of plate tectonics. The idea that the surface of the earth is made of rock
that exist is numerous crumpled and broken rocky plates that can be enormous. These plates move. That movement, causes earthquakes.
A few months ago, on August 14
th
2021, the nearby island of Haiti was rocked by a massive earthquake.
Watch (
https://www.youtube.com/watch?v=e_E58OMDl5o
) as Dr. Wendy Bohon, an earthquake scientist and science communicator with the Incorporated Research Institutions for Seismology, discusses what was known of the earthquake by scientists far away in the first few minutes after the earthquake occurred.
Questions:
What day was this video livestreamed? (1 point)
August 14, 2021
What preliminary magnitude was the earthquake estimated to be? (1 point)
7.2
Approximately how many people live on Haiti? (1 point)
22 million
Did the earthquake occur out under the ocean or on land? (1 point)
On land
The earthquake apparently happened in the same area as what other 21
st
century seismic event? (2 points)
Enriquillo fault zone, the 7.0 magnitude earthquake in Haiti in 2010. What are many homes and business in Haiti made of and why? (5 points)
Concrete Blocks
Listen to Dr. Bohon’s brief description of what causes earthquakes. Please write an explanation in your own words for why earthquakes occur, and keep in mind that you will have many opportunities to increase what you know about things like earthquakes this semester. A good explanation uses terms like
crust, shaking, friction, movement, and plate boundary. (9 points)
Earthquakes occur when the crust, which is broken up into big pieces that move under the earth’s surface, come together, and apply friction to one another. The stress to the plate boundary (whether convergent, divergent, or transforming) eventually overcomes the friction and an earthquake is released via the sudden motion along the fault which causes the shaking felt. Watch the following news feed about what the earthquake meant for people on the ground in Haiti:
ABC News https://www.youtube.com/watch?v=-KzCYgx4URM
What do you imagine will be the effects of a tropical storm with high winds and heavy rainfall on an earthquake damaged zone like this? Consider scenes from the video and describe what would change. Write 5-6 logical sentences. (5 points)
The devastation from the 7.2 earthquake in Haiti caused a lot of debris which could turn detrimental with the addition of a tropical storm. Tropical storms are characterized by high winds and heavy rainfall. With this in mind, I would imagine that all the loose debris could be picked up by the wind and tossed around causing more damage to the surrounding areas. This, coupled with the rain, could cause a slurry slide of cement mixed with water. This slurry will cause more injury and make body recovery and missing persons recovery extremely difficult.
By the time you are taking this lab, Tropical Storm Grace will have already passed over Haiti. Spend a few minutes on online news sources to get an idea what happened in this area last August. Describe some of what you found here and include a link to your news source: (5 points) One thing I discovered about the aftereffects of Tropical Storm Grace was that the Tuesday following the storm the power was taken out after a 2in per hour rainfall and 35mph wind. The confirm death tole also rose to 1,941 with 9,900 injured and 30,000 left homeless. There was also a rise in criminal gang marauds in the southern portion of the country, with which the United Nation’s Office for the Coordination of Humanitarian Affairs had to broker negotiations with the militia leaders to secure safe passage of the aid caravans. https://www.theguardian.com/global-development/2021/aug/17/haiti-tropical-storm-grace-
earthquake-rain
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