11.
The term "subsidence" in geological hazards refers to:

12.
What kind of hazard is a sinkhole?

13.
Seismic waves that cause the most damage during earthquakes are:

14.
Which of the following is a method to reduce landslide risk?

15.
Which instrument is used to measure ground movement during an earthquake?

16.
What causes ground shaking during an earthquake?

17.
Which hazard is most commonly associated with volcanic eruptions?

18.
The hazard map of an area is used to:

19.
Earthquake-resistant buildings are designed primarily to:

20.
What is the term for a large mass of snow, ice, and rocks falling rapidly down a mountainside?