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26 Cards in this Set
- Front
- Back
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Epicenter
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Point on the surface of the earth dirctly above the focus
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Focus
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Beginning point of the earthquake
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Lithosphere
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The crest and upper area of the mantle that consists of larage pieces called plates
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Magnitude
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The strength or amount of energy released from an earthquake
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Seismic waves
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Vibrations that flow out from the focus of an earthquake
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A machine used to detect time and measure movements of the earth
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Seismograph
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Bits of ash and lava
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cinder
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Hot spring that periodically blows stema and hot water into the air
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Geyser
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Heat from magma warms water, water rises to earth's surface and does what?
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Forms a hot spring
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Magma
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molten or semi-liquid rock under the earth's crust
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Vog
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Volcanic gases
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A mixture of cinder, ash and rock
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Tephra
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Where and what is the Ring of Fire?
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2/3 of the earth's volcanos are here in the Pacific Ocean
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What are the three kinds of faults?
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strike-slip
normal reverse |
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Where do R and L waves occur?
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On the earth's surface
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Volcanologists study what?
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Volcanos
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Do earthquakes happen above the surface of the earth?
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No
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Which waves are the most destructive?
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L waves
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Can construction of a large building and the movement of molten rock under a volcano, cause an EARTHQUAKE?
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YES
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Describe two building practices that are important when construcing to resist earthquakes
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1) solid foundation and strong material
Concrete reinforced with steel rods and a STEEL FRAME |
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When might volcanic activity occur?
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after an earthquake
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How do volcanos affect the weather?
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Slight cooling of temperatures because it blocks the sun's rays.
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What does dormant, active and extinct volcanoes mean?
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Dormant-erupted in the past, but not expected to erupt again
Active-has erupted and IS expected to erupt again Extinct- no recorded eruption and NOT expected to erupt |
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Can volcanic activity occur under the ocean?
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yes
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Scientists believe that as the magma in Earth's mantle moves it causes the plate boundaries to do what to each other?
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Moves the plates a few centimeters each year and SEPARATE, COLLIDE OR SLIDE along
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KNOW HOW TO LABEL THE VOLCANO PARTS AND IDENTIFY THE DIFFERENT KINDS OF FAULTS.
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STUDY HARD- SEE STUDY GUIDE
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