INTRODUCTION TOGEOLOGY: Instructor: Lois Johnsorn COURSE SC?-155-C3 Summer 2018

Question

INTRODUCTION TOGEOLOGY: Instructor: Lois Johnsorn COURSE SC?-155-C3 Summer 2018 , Score Grade: Quiz 3 -5/7/18 I hereby acknowledge that I will not have a cell phone or any electronic device turned on Fallure to check this box and abide by this rule will result in a zero grade for the quiz Circle the letter of the most correct answer. (Each question is worth 1 point) 1. When an earthquake occurs, the second waves to arrive and be recorded on a seismograph while I am taking this quiz a. L-waves b. D-waves. c. P-waves. d. S-waves 2. Which of the following is true for P-waves? a. They travel through solids, liquids, and gases c. They do not change the volume of the material that they travel through. d. The rock particles vibrate perpendicular to the direction of travel. and which of the following is true for S-waves? a. They travel through solids, liquids, and gases b. They travel faster then P-waves. They change the volume of the material that they travel through. (answer both questions) 3. The rhythmic sloshing of water in lakes, reservoirs, and enclosed basins caused by seismic vibrations is called a. seiches b. ground shaking C. liquefaction 4. The MOHO is the boundary between the a. crust and mantle. b. lithosphere and asthenosphere. c. mantle and core d. inner core and outer core. and the Lehman discontinuity is the boundary between the a. crust and mantle. b. lithosphere and asthenosphere. c. mantle and core. d. inner core and outer core. (answer both questions)

Explanation / Answer

1) Option d is correct.

S- waves

Earthquakes generate three types of seismic waves: P (primary) waves, S (secondary) waves and surface waves, which arrive at seismic recording stations one after another.

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