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Chapter 4 Earthquake

Science St Mary Annapolis 8th grade

QuestionAnswer
What are the 3 types stress Tension, compression and shearing
Faults usually occur along Plate boundaries, where the forces of plate motion push or pull the crust so much that the crust breaks
What are the types of faults Normal faults, reverse faults and strike-slip faults
What is anticline Describes an upward arc in the ground
What is synclines Describes an downward arc in the ground
The forces of plate movement can change a flat plain into what 4 landforms Anticlines and synclines, folded mountains, fault-block mountains, and plateaus
Seismic waves carry energy from an earthquake how Away from the focus, through Earth’s interior, and across the surface
There are three types of seismic waves and each travel differently through the earth’s layers name them P waves, S waves and surface waves
How does a P wave move through the earth Compressing and extending
How does an S wave move through the earth Side to Side
How do surface wave move through the earth Travel like waves up and down similar to water
Which seismic wave does not travel through liquid S Waves
Know what the epicenter and the focus are in relation to an earthquake Epicenter is above the focus and the focus is the break of the rock
S Waves cause what kind of damage Shake structures violently
P waves cause what kind of damage Less damage due to direction of movement
Which type of seismic wave causes the worst damage Surface Waves
What are the three common ways of measuring earthquakes Moment magnitude scale (energy released), Modified Marcalli Scale (damage), Richter scale (magnitude)
Know how they locate the epicenter Using multiple seismographs and draw three circles where they touch is the epicenter
Created by: wase13
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