Earthquakes and Volcanoes

Question 1

list the main impacts of earthquakes

Answer 1

1. formation of tsunami
2. destruction of services and infrastructure
3. landslides
4. loss of lives

Question 2

what are some of the preparedness measures (long term)

Answer 2

1. land use regulation
2. effective building design
   3, Earthquake monitoring n warning system
3. emergency drills

Question 3

what r the 2 main types of earthquake?

Answer 3

shallow- focus and deep-focus earthquake

Question 4

what is the location of a shallow focus earthquake

Answer 4

occurs 70km of the earths crust

Question 5

location of deep shadow earthquake

Answer 5

below 70km of the earths crust

Question 6

Shield volcanoes characteristics

Answer 6

Gentle slopes, broad summit, low silica larva (flows easily), not very explosive eruptions

Question 7

Characteristic of strato volcanoes

Answer 7

High silica larva (doesnt flow easily), steep, explosive eruptions

Question 8

Where r the distribution of volcanoes

Answer 8

Pacific ring of fire, along several converging plates and c-c diverging plates

Question 9

Impact of a deep focus earthquake

Answer 9

Smaller impact, as vibrations and seismic waves take longer to reach surface

Question 10

Impact of shallow focus earthquake

Answer 10

Greater impact ad vibrations and seismic waves reach land surface V quickly

Question 11

What factors would determine the likely hood if population survival after an earthquake? (6)

Answer 11

1. Population density
2. Level of preparedness
3. Distance from epicenter
4. Time of occurrence
5. TYPE of soil
6. Location of earthquakes

Question 12

An example of destruction of properties from an earthquake and its impact

Answer 12

Tohoku, Japan in 2011, the earthquake caused a tsunami to travelled 10km inland. Severe structural damage, resulting in thousands and hundreds of ppl leaving their homes

Question 13

What are the risks living near volcanoes

Answer 13

Massive destruction by volcanic materials, air pollution

Question 14

What are the benefits living near a volcano?

Answer 14

1. Fertile soil
2. Precious stones n minerals
3. Tourism
4. Geothermal energy

Question 15

An example of preparedness measures by infrastructure

Answer 15

Taipei 101: made of reinforced concrete and steel, has damping device that acts as shock absorbers, which also act as a counterweight to move in the opposite direction of the earthquake

Question 16

What are the limitations of monitoring and warning systems

Answer 16

They are expensive, earthquakes occur seconds aft warning which results in insufficient time to evacuate, false warnings may be given, it is difficult to give accurate warnings