DRRR GeoHazard

1. Which of the following is not an effect of frequent submersion of soil in water?

• a. curving

• b. weakened soil

• c. formation of spaces

• d. shriveled soil particles

2. Which of the following is a natural cause of landslide?

• a. clear cutting

• b. mining

• c. cultivation

• d. liquefaction

3. What type of sinkhole develops gradually where the covering sediments are permeable and and contain sand?

• a. artificial

• b. cover collapse

• c. cover subsidence

• d. dissolution

4. Which of the following is a type of sinkhole that develops abruptly which cause catastrophic damage?

• a. artificial

• b. cover collapse

• c. cover subsidence

• d. dissolution

5. Which of the following occurs in areas where limestone is exposed at land surface?

• a. artificial

• b. cover collapse

• c. cover subsidence

• d. dissolution

6. Which of the following occurs in every slope covered with loose, weathered material with a very slow downslope movement of particles?

• a. debris flow

• b. rock fall

• c. slumping

• d. soil creep

7. Which of the following happens when the slope becomes saturated with water triggering landslides of water sacked mass of rock and soil?

• a. debris flow

• b. rock fall

• c. slumping

• d. soil creep

8. Which of the following pertains to a sudden slide of rocks downslope?

• a. rock failure

• b. rock fall

• c. rock slip

• d. rock stead

9. Which of the following is a natural sign of an impending sinkhole?

• a. bent tree trunks

• b. ants that gather food

• c. wilting of vegetation in a limited area

• d. moths flying in residential houselights

10. Which of the following is NOT a sign of impending landslide?

• a. change in water flow

• b. discolored well water

• c. tension cracks

• d. things moving