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Earthquakes,

These flashcards will be on the study of earthquakes.

QuestionAnswer
Where can earthquakes happen? Earthquakes can happen near the surface or below it. Most happen in earthquake zones along plate boundaries. Sometimes in the middle of plates.
What are the two type of seismic waves? Body waves and surface waves.
What are surface waves? Waves that ravel along the Earth's surface.
What are body waves? Waves that travel through the Earth's interior.
How many types of body waves are there? Three. (P waves,S waves,and L waves)
What are S waves? Seismic waves that causes particles of rock to move in a side to side direction.
What is a P wave? A wave that causes rock to move in a back and forth direction.
What is a L wave? A wave that moves along the Earth's surface and produce motion mostly in the upper few kilometers of the Earth's crust.
What are P waves also known as? Pressure waves or Primary waves.
Which wave is most destructive? L wave
Which wave is detected second? S wave
Which wave is detected first? P waves
Can a S wave travel through an ocean? No. S waves can't travel through material that is completely liquid.
What are instruments located at or near the surface of the Earth that records seismic waves? Seismographs
What is a seismogram? Traces of motion that's created by a seismograph.
Where is the epicenter? Directly above the surface of the focus.
What is the focus? The point inside Earth where earthquakes begin.
What does the Richter scale measure? The magnitude of an earthquake by measuring ground motion recorded by seismograms.
What is the difference in arrival time in S and P waves called? S.P interval
What does the Mercalli scale measure. It measures damage using roman numerals.
Created by: Nya T18
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