Name: ___________________________________
Block: ___________________
Date: _________________________
HOW THE EARTH WAS MADE (SEASON 2): MT. ST HELENS
1. How much did Mt. St. Helens blow off its summit?
2. Where is Mt St. Helens located?
3. How many volcanoes are in the Cascade mountain range?
4. How many years ago was the last eruption?
5. What was the first signals the mountain was waking?
6. What was another key indicator for eruption besides earthquakes?
7. The presence of gas is a sure sign that what is going to happen?
8. What did the machine measure?
9. What happened to the north side of the mountain in April of 1980
10. By May 11 how much had the bulge moved outward? What did that mean?
11. When did the volcano erupt?
12. What was the name of the geologist who was on duty at the volcano the day it erupted?
13. How far away did the ash cloud block visibility?
14. (a) How many people were killed?
(b) How many acres were destroyed?
(c) How big was the crater in the summit?
15. At 8:32 am an earthquake shook the mountain – what was the magnitude of that earthquake?
16. What happened to the north flank of the mountain?
17. What did the yellow color to the rocks show the geologists?
18. What shape is the crater today?
19. What surged in a north direction that fanned out from the mountain?
20. How fast was it travelling?
21. What was a surprise to the scientists?
22. After the landslide what was exposed?
23. How high was the volcanic plume?
24. How much energy was release in the explosion?
25. What happened to the snowfields?
26. How fast did the mud flows travel?
27. What is a lahar?
28. How much mud flowed down the mountain?
29. The geologist found one lahar that stumped them because they found rounded river rock in it. How
long ago was it formed?
30. What formed in the crater?
31. The largest eruption of Mt. St. Helens was how much bigger than the 1980 eruption?
32. In 1995 scientists from Mt. St. Helens were able to help with Monsterrat. What country was this
mountain located?
33. The town was buried under how many feet of mud from the eruption of Monsterrat in 1995?
Name: ___________________________________
Period: ____ Date: ____________
How the Earth Was Made (season 2):
Mt. St Helens
1. How much did Mt. St. Helens blow off its
summit?
2. Where is Mt St. Helens located?
3. How many volcanoes are in the Cascade
mountain range?
4. How many years ago was the last
eruption?
5. What was the first signals the mountain
was waking?
6. What was another key indicator for
eruption besides earthquakes?
7. The presence of gas is a sure sign that
what is going to happen?
8. What did the machine measure?
9. What happened to the north side of the
mountain in April of 1980
10. By May 11 how much had the bulge
moved outward? What did that mean?
11. When did the volcano erupt?
12. What was the name of the geologist who
was on duty at the volcano the day it
erupted?
13. How far away did the ash cloud block
visibility?
14. (a) How many people were killed?
(b) How many acres were destroyed?
(c) How big was the crater in the summit?
15. At 8:32 am an earthquake shook the
mountain – what was the magnitude of that
earthquake?
1. 600 ft
2. Washington
3. 20 volcanoes
4. 123 years
5. EQ’s (earthquakes)
6. gases
7. An eruption
8. Light in sky – escaping gases
9. Started bulging out
10. 450 ft rising magma
11. May 18, 1980
12. David Johnston
13. 300 miles
14. (a) 57 people
(b) 230 square miles
(c) 2000 foot crater
15. 5.2 M
16. What happened to the north flank of the
mountain?
17. What did the yellow color to the rocks
show the geologists
18. What shape is the crater today?
19. What surged in a north direction that
fanned out from the mountain?
20. How fast was it travelling?
21. What was a surprise to the scientists?
22. After the landslide what was exposed?
23. How high was the volcanic plume?
24. How much energy was release in the
explosion?
25. What happened to the snowfields?
26. How fast did the mud flows travel?
27. What is a lahar?
28. How much mud flowed down the
mountain?
29. The geologist found one lahar that
stumped them because they found rounded
river rock in it. How long ago was it formed?
30. What formed in the crater?
31. The largest eruption of Mt. St. Helens was
how much bigger than the 1980 eruption?
32. In 1995 scientists from Mt. St. Helens
were able to help with Monsterrat. What
country was this mountain located?
33. The town was buried under how many
feet of mud from the eruption of Monsterrat
in 1995?
16. Became a landslide
17. The rock came into contact with water
altering the rock
18. A horseshoe
19. Surge - pyroclastic
20.
21.
22.
23.
24.
300 mph
A sideways eruption (surge)
The magma underneath the volcano
3 times the height of Mt. Everest
27000 times the Hiroshima bomb
25. Hot volcanic ash melted them and they
became mudflows
26. 90 mph
27. A mud flow
28. 65 cubic miles of mud
29. 3,000 years old
30. A dome
31. 4 times larger
32. The Caribbean
33. 39 feet deep