Earthquakes

Question 1

What could cause tsunamis

Answer 1

movement of sea floor during a earthquake at subduction zones, a explosive underwater volcano and landslides above sea level where materials plunge into the water

Question 2

The bad of earthquakes

Answer 2

• An earthquake can disrupt essential services such as gas and water, snapping pipes and breaking cables. (The earthquakes in Kobe, Japan in 1995 disrupted essential services to a million the residents)
• Earthquakes threaten the lives of those living in earthquake zones. (Kobe Japan, 1995 6000 casualties)
• Earthquakes cause cracks in infrastructure such as roads in bridges, causing delivery of assistance to slow down (Kobe Japan, 1995 cause US300 billion

Question 3

The bad of living near volcanoes:

Damage to life

Answer 3

-Lava temperatures range from 500-1400 will melt anything in its path. Volcanic bombs of heated rocks can damage properties
The eruption of Nevado del Ruiz in the Andes mountain in 1985 released pyroclastic flow engulfing the town of Armero and killing more than 20000 people

Question 4

Time of occurrence is important in determining earth quakes casualties why?

Answer 4

The time of day determines where and what people are doing (x>2400 people died when a earthquake occured near midnight in the Sun Moon Lake Region in taiwan in 1999)

Question 5

Type of soil is important in determining earth quakes casualties why?

Answer 5

In places where sediments are loose, seismic waves are amplified and the soil becomes saturated and flows like liquid(In Christchurch, many houses had to be abandoned because of liquefaction after the earthquake in 2011)

Question 6

Distance from epicentre is important in determining earth quakes casualties why?

Answer 6

The closer a location is to the epicentre, the more stronger and severe (Christchurch, New Zealand, in 2011 and the city suffered more damage than areas further away from it)

Question 7

The bad of living near volcanoes:

Pollution

Answer 7

It may induce severe respiratory problems for people and animals, block sunlight and suffocate crops
Due to a volcano eruption from eyjafjallajokull, Much of europe had to close their airspace, causing 1.8 billion and displacing 1.2 million passengers

Question 8

Land use regulation

Answer 8

Help restrict development in certain areas prone to liquefaction or low lying areas which are vulnerable to tsunamis. However, it needs to be carried out in areas which may already be built and owned. meaning that they have to purchase from the previous owners, but some will not want to move!
Memphis, United states of america prohibits development at areas at risk of major liquefaction