Disaster Readiness and Risk Reduction

Which of the following describes a sinkhole?

• It varies from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep.

• It forms a Karst Terrain.

• Both A and B

• Either A or B

Which is an example of a geological hazard?

• Earthquake

• El Niṅo

• Fire

• Thunderstorm

A town which experienced a rain-induced landslide in 2003.

• Badian, Cebu

• Pangan Island, Southern Leyte

• Barili, Cebu

• Kabankalan,Negros Oriental

Which of the following signs indicate an incoming landslide?

• Bulging ground appear

• Small changes in heat flow

• New small ponds that appear after rain

• Unusual disappearance of water, or oncoming wall of water

_______ is a region where the bedrock can be dissolved by ground water.

• Avalanche

• Debris

• Karst Terrain

• Sinkhole

Which of the following is a landslide's mode of failure?

• Slide

• Spread

• Topple

• All of these

Which of the following does not describe a Cover-subsidence sinkhole?

• It develops gradually.

• It develops over a period of hours.

• It may be undetected for long periods.

• It is relatively uncommon and smaller.

What is the relationship of the two driving forces which causes a landslide?

• Landslide occurs when the driving forces exceed the resisting forces.

• Landslide occurs when the resisting forces exceed the driving forces.

• Landslide occurs when the resisting forces is equal to the driving forces.

• Landslide occurs when the resisting forces is added to the driving forces.

A type of sinkhole in which it occurs where the covering sediments contain a significant amount of clay.

• Avalanche

• Dissolution

• Cover-subsidence sinkhole

• Cover-collapse sinkhole

Which of the following is not a bedrock in a karst area?

• Dolomite

• Gypsum

• Limestone

• Pebbles