Self-Test Fill in the blanks with the correct word. Write your answers on a separate sheet of paper. 1. is the government agency tasked in monitoring earthquakes and volcanic activity. 2 is a series of water waves cause when the sea floor moves vertically in an earthquake and which can travel vast distances in a short period of time. of an earthquake. 3. A seismograph is used to determine the 4. When the earthquake movement alors cult breaks the Earth's surface fruit 18 Occurs. 5 are lines traced on the recording tape of seismograph during a quake. 6. PHIVOLCS uses to describe the intensity of earthquakes in the Philippines. 7. The measure of an earthquakes effect in a place is called 8. The Mercalli scale named after is used as a basis for the intensity of an earthquake 9. is when sediment grains are literally made to float in groundwater which causes the soil to lose all its solidity. 10. are caused by earthquakes both by direct rupture and by sustained shaking of unstable slopes.​