Earth Science

What is the most abundant volcanic gas released during volcanic activity?

• Water Vapor

• Hydrogen Sulfide

• Sulfur Dioxide

• Carbon Dioxide

Which type of seismic wave arrives first during an earthquake?

• Surface waves

• Love waves

• P-waves

• S-waves

What is Lahar?

• A large volcanic rock fragment

• A fast-moving current of hot gas and volcanic matter

• A volcanic debris flow or mudflow

• A type of volcanic gas

Which of the following is NOT a factor in hazard analysis?

• Speed of Onset

• Frequency

• Intensity

• Color

What does the term 'Vulnerability' refer to in disaster risk analysis?

• The strength of a disaster

• The ability to respond to a disaster

• The susceptibility of a community to hazards

• The speed at which a disaster occurs

Which of the following is a sign of an impending volcanic eruption?

• Decrease in water temperature

• Sudden disappearance of wildlife

• Increase in the frequency and intensity of earthquakes

• Rapid growth of vegetation

What is the primary effect of an earthquake?

• Submerged houses and destroyed power lines

• Infectious diseases

• Reduced food and crop yields

• Physical/mental health problems

Which type of fault is characterized by the hanging wall block moving up relative to the footwall block?

• Blind Fault

• Reverse Fault

• Normal Fault

• Strike-Slip Fault

What is the main cause of Tsunamis?

• Sudden, vertical displacement of a column of water

• Long periods of heavy rainfall

• Landslides

• High wind speeds

Which of the following is a biological hazard factor?

• Industrial Disaster

• Infectious Disease

• Chemical Leakage

• Mine Disaster