Q | A |
What triggers tsunamis? | Earthquakes on the ocean floor. |
What is liquefaction? | The process by which an earthquake's violent movement turns loose soil into liquid mud |
What wave arrives first? | P waves |
What wave causes the most damage? | Surface waves |
What is a record of an earthquake? | Seismogram |
True or False? A scale that rates an earth quakes magnitude based on the size of seismic waves is a Mercalli Scale | False |
What are two ways to reinforce your house? | Use Metal connectors to strengthen the frame and use plywood panels to strength the walls |
How can you make utilities safer? | Use flexible joints to gas and water pipes to prevent fire and flooding |
What helps geologists determine the earthquake risk for an area? | locating where faults are active and where past earthquakes have occurred |
What are four ways earthquakes cause damage | Shaking, Liquefaction, Aftershock, and Tsunamis |
What does a seismograph record? | seismic waves by vibrations in the drum |
What are four instruments used to monitor movement along faults? | Tiltmeters, Laser-Ranging Devices, Creep Meters, and GPS Satellite. |