Hazards

Question 1

What is the distinction between primary and secondary impacts arising out of seismic events?

Answer 1

• Primary impacts are immediate and a direct result of the tremours
• Secondary impacts arise in the aftermath and are a consequence of the primary impacts

Question 2

In what conditions do tropical storms tend to develop?

Answer 2

• Warmer waters over 25 degrees
• Lower pressure conditions with rising air
• Forming 5-10 degrees either side of the equator
• Usually forming late summer
• Converging air masses

Question 3

Outline the characteristics of one hazard associated with volcanic eruptions. (3)

Answer 3

• Pyroclastic flow are created in the midst of a volcanic eruption
• Plumes of hot gas, ash and dust are forced out of the volcano
• The intense heat, poisonous gas and speed combine to create highly hazardous conditions