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8. Which of the following does NOT describes a seismic wave?
a. Seismic waves are generated during an earthquake. b. Seismic waves travel only in an epicenter that is highly populated. C. P waves travel faster than both S waves and surface waves. d. Speeds of seismic waves changes at different densities of materials
9. Which differentiates P-waves from S-waves?
a. P-waves are transverse while S-waves are longitudinal b. P-waves are longitudinal while S-waves are transverse C. S-waves are faster than the P-waves d. S-waves are body waves while P-waves are surface waves
10. Based from the figure below, when an earthquake occurs, seismic waves travel in any directions, some are bent some are reflected back and some penetrate towards the earth's inner core. What does it prove inside the earth?
a. the earth is mass of heavy rocks b. the it has the ability to reflect and seismic waves c. the earth is layered with varying densities and compositions d. the earth is molten rock
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