Quiz 4 _ DRRR

Which of the following contains a high-density mix of hot lava blocks, pumice,

ash and volcanic gas?

• Ballistic Projectiles

• Pyroclastic Flows

• Lava Flows

• Ash Fall

Which of the following statements is NOT about volcanic hazards?

• Volcanic hazards have potential threat, for seeable crisis that

  directly affect to human beings.

• Volcanic hazards are observable facts that are arising due to

  volcanic activity.

• Volcanic hazards can even directly affect the political stability of

  the country.

• Volcanic hazards have great contribution to the business aspect

  of the country.

Which of the following volcanic hazards is not identified as hazardous

effect to human beings?

• Respiratory tract infection

• Skin irritation

• Eye irritation

• Acid rain

Which of the following volcanic gases when react with water in the

atmosphere yields a compound called Acid rain?

• Carbon dioxide

• Hydrogen fluoride

• Hydrogen gas

• Sulfur dioxide

Which of the following human body systems is greatly affected by

volcanic gases?

• Respiratory system

• Digestive system

• Muscular system

• Skeletal system

Which of the following volcanic hazards is not identified as most

hazardous to the community?

• Destruction of agricultural lands

• Long term flooding problem

• Respiratory tract infection

• Acid rain

Which of the signs of an impending volcanic eruption refers to the swelling of

volcano that signals the accumulation of magma near its surface?

• gas emission

• harmonic tremors

• increase in number of earthquakes

• bulges in the mountain or inflammation

Which of the following events does not indicate an impending eruption?

• drying up of hot springs around the volcano

• eroded area of the volcano after a heavy rain

• drying up of the vegetation around the volcano

• variation in the chemical content of the lakes and springs around the volcano

All of the following events indicate an impending eruption except:

• a measurable bulge or swelling of the volcano

• occurence of short earthquakes in the region

• discovery of new hot springs around the volcano

• increased temperature of hot springs around the volcano

Which of the following is a parameter used to monitor volcanoes by observing

the surface of the volcano for any changes?

• gases

• ground deformation

• seismic activity

• sensory observation