The Tornado Heard Around Town
Branches flew across my eyes and the wind gusted down the street harder than I had ever seen. In the
summer going into my senior year, a tornado had hit my town. It happened around eleven at night, but the
Where do EQ's occur?
Most EQ are concentrated at tectonic plate boundaries
~1,000,000 earthquakes (EQ's) per year; ~20 per year involve significant
damage & some deaths
I. What is an Earthquake?
The vibration of the earth produced by rapid rel
GEOL 118 Introduction to Natural Disasters
Natural Hazard: natural Earth process that poses a threat to human life or property
Natural Disaster: natural Earth process that has caused significant deaths, injuries, or
Catastrophe : massive nat
Geol 118 Second Hour-Exam
Identify the letter of the choice that best completes the statement or answers the question.
( 5 points each; total = 250 points)
The earthquake that caused the Sumatra tsunami on 12/26/2004 is a re
Geology 118, First Hour-Exam
Identify one best choice for each question; 5 points each for questions 1-50.
1. In order to minimize damages, areas of cities that are subjected to signicant natural
hazards should be used for which of the fol
Haiti Writing Assignment
April 14, 2010
The earthquake that occurred in Haiti on January 12, 2010, was one of the
deadliest earthquakes known to man. The earthquake caused massive damage to the
countrys infrastructure and a high death toll. Altho
Major Layers Within the Earth
(A) based on chemical properties:
(a) Continental (~ 15-75 km)
Granite: Sialic (rich in Si & Al)/ Felsic (rich in feldspar and quartz)
(lighter in weight and color)
(b) Oceanic (~ 3-10 km)
GEOL 118: Volcanoes
What is a volcano?
Vulcan: Roman god of fire.
Volcano- hill/mountain formed by erupted lava / pyroclastic debris
Volcanic rock: solidified at/near the Earths surface (extrusive igneous rock).
Texture of Volcanic Rocks
Tsunami: Japanese name for harbor waves, because the waves rise highest where they are
focused into bays or harbors.
- not tidal waves ; have nothing to do with tides
- danger signals may include a rapid rise or fall of sea level.
- caused by larg
Geology 118 (ESES 118 + GLBL 118): NATURAL DISASTERS
Lectures: M, W, F 11-11:50 AM in Room 228, Natural History Building
Instructor: Prof. Chu-Yung Chen, Rm. 200 Natural History Building,
Please see Prof. Chen ASAP if you
Key to Geol 118 CHP, posted 2nd hour-exam
Key to posted previous 1st hour-exam
Exam 2 Study Guide
o Volcano: mountain formed by erupted lava or pyroclastic debris or both.
Rock= extrusive (volcanic) igneous rock
Mafic rock: solidities by rapid cooling therefore has fine grain size or
amorphous glass (no crystals
* Principle of Uniformitarianism - "Present is key to past"; current physical processes have
also operated in geologic past (proposed by James Hutton in 1700's).
Types of Geologic Time
Absolute Age: age of rock (or geologic event) in years.