Summative 1

Cracks or fractures on the Earth's Crust.

• Oblique-Strike Slip Fault

• Fault

• Intensity

• Epicenter

Faults that generated an earthquake in the past 10,000 years.

• Oblique-Strike Slip Fault

• Fault

• Active Fault

• Epicenter

A fault formed from the combination of shearing and compression or tension.

• Philippine fault

• Oblique-strike slip fault

• Valley fault system

• Active fault

A fault that traverses most cities in the Greater Manila area.

• Valley fault system

• Philippine fault

• Central Mindoro Fault

• Aglubang river fault

A government agency in the Philippines that spearheads the study of active faults.

• PAGASA

• PHIVOLCS

• DENR

• DepEd

A slow type of fault movement.

• Creep

• Dip-slip fault

• Normal fault

• Reverse

Part of the Earthquake directly above the focus.

• Fault slab

• Epicenter

• Focus

• Creep

A modern seismograph.

• galvanometer

• seismometer

• ammeter

• millimeter

Describes the total amount of energy that is released by an erathquake at its source.

• Intensity

• Magnitude

• seismometer

• Richter Magnitude Scale

A rough estimate of the size and strength of an earthquake.

• Magnitude

• Richter Scale

• Intensity

• Frequency