mt st helens

Question 1

where is it?

Answer 1

washington state

Question 2

when did it happen?

Answer 2

18th may 1980n

Question 3

what mountain range is it part of?

Answer 3

cascade

Question 4

what is significant about it?

Answer 4

worst eruption in US history

Question 5

what two plates was it caused by?

Answer 5

Juan de Fuca plate subducting beneath N america

Question 6

when were minor earthquakes felt?

Answer 6

march 1980

Question 7

what did scientists do

Answer 7

they predicted an earthquake due to the change in shape of volcano and earthwaues so an evacuation was done

Question 8

why did not many people evacuated?

Answer 8

they did but because nothing happened for two months they moved back

Question 9

what mistake did scientists make?

Answer 9

they did not predict that the volcano would erupt laterally

safe zones were in these areas

Question 10

what % of people that died were outside the exclusion zones?

Answer 10

90%

Question 11

how many people died?

Answer 11

57

Question 12

how many animals died?

Answer 12

7000

Question 13

how far did damage to plants and animals extent?

Answer 13

any animals within 25km north died

Question 14

how many homes destroyed?

Answer 14

250

Question 15

how many bridges destroyed?

Answer 15

47

Question 16

how much ash fell?

Answer 16

15 cm

Question 17

why was it economically devastating?

Answer 17

it destroyed the timber industry

Question 18

how much did damage cost?

Answer 18

1.1 billion

Question 19

what was the damage to crops?

Answer 19

$100 million

Question 20

what was the short term responses?

Answer 20

national guard flown in to save people using helicopters saved 198 people
gas masks given

Question 21

how many gas masks were given

Answer 21

2 million

Question 22

how much was given to farmers as compensation?

Answer 22

70 million

Question 23

why were new tourist facilities made?

Answer 23

as tourists stopped coming as thought they were in danger

Question 24

what happened to bridges as LTR/

Answer 24

they were widened and made stronger

Question 25

who is it now monitored by?

Answer 25

USGS

Question 26

how long did the removal of ash take?

Answer 26

10 weeks