Natural Hazard processes

Which kind of seismic waves are responsible for earthquake damages?

• P-Waves

• S-Waves

• T-Waves

• Love Waves

• Rayleigh Waves

What kind of secondary hazards at earthquake events can occur?

• Storm surges

• Tornadoes

• Tsunamis

• Landslides

• Liquifaction

What is the difference between a natural hazard and a natural disaster? 

• They are exactly the same 
• A hazard is what could happen, a disaster is after it has an impact on humans
• I disaster is what could happen, a hazard is after it has an impact on humans 
• Hurricanes and tsunamis are natural disasters, but earthquakes and volcanoes are hazards

Strange animal behavior, such as toads fleeing an area, could be an indicator that ____________ is about to occur. 

• a volcanic eruption 
• a tsunami
• a hurricane
• an earthquake

A seismograph can be used to measure and study what? 

• Volcanic eruptions
• Earthquakes
• Tsunamis
• All of the above

How can some of the impacts of earthquakes be reduced?

• by building structures that can sway with the motion

• by building structures that do NOT move with the motion

• by using thermometers to measure ground temperatures

• by using satellites to monitor warning buoys in the ocean

How much more energy is released by a M7 earthquake compared to an M5 earthquake?

• 1000 times

• 200 times

• 100 times

• 50 times

Which of these environmental conditions are required for the formation of tropical storms like hurricanes?

• warm ocean water > 26°C

• stable atmospheric conditions

• close distance to equator < 100 km

• pre-existing near surface disturbance

• high vertical wind shear

Tornado intensity is measured using the...

(a)  

Which of these statements are true?

• If normal stress > shear stress than the slope is stable.

• If friction is > normal stress than the slope is instable.

• At steeps slopes shear forces are > normal forces.

• A factor of safety > 1 means the slope is unstable.

• Water is always a factor contributing to instability.