Seismology

How many seismic monitoring stations does PHIVOLCS operate in the Philippines as of December 2020?

• 50

• 75

• 108

• 200

Tags

NGSS.MS-ESS3-2

What type of seismic wave is known for causing the most damage during an earthquake?

• P waves

• S waves

• Love waves

• Rayleigh waves

Which seismic scale is used in the Philippines?

• Modified Mercalli scale (MM)

• Medvedev-Sponheuer-Karnik scale (MSK-64)

• PHIVOLCS Earthquake Intensity Scale (PEIS)

• JMA Seismic Intensity Scale

What is the formula-based magnitude scale that estimates the total energy released by an earthquake?

• Richter scale

• Moment magnitude scale

• Modified Mercalli scale

• PHIVOLCS Earthquake Intensity Scale

Which scale is used to represent the magnitude of an earthquake?

• Moment magnitude scale

• Modified Mercalli scale

• Richter scale

• PHIVOLCS Earthquake Intensity Scale

What does the intensity of an earthquake measure?

• The energy released at the focus

• The duration of the shaking

• The strength of shaking felt by people

• The depth of the earthquake

What type of earthquake is produced by the movement of magma?

• Tectonic earthquake

• Volcanic earthquake

• Induced earthquake

• Aftershock

Which scale uses Roman numerals to rate the intensity of an earthquake?

• Richter scale

• Moment magnitude scale

• Modified Mercalli scale

• PHIVOLCS Earthquake Intensity Scale

Which seismic wave does a seismograph detect first?  

• P Wave

• S Wave

• Surface Wave

What is the point on the surface of the earth directly above the focus of an earthquake?

• epicenter

• fault

• focus

• intensity