What happened before the eruption of Mt. St. Helens?
1. Pyroclastic Flow
2. Closed roads
3. Flattened forests
4. Small earthquakes
What was the ultimate source of the eruption?
1. An earthquake
2. A landslide
3. The pyroclastic flow
4. The ash and smoke
What was one of the effects of the eruption?
1. Numerous Small Earthquakes
2. Volcanic Landslides
3. The bulging of Mt. St. Helens
4. The formation of the Cascades Range
What question is NOT answered?
1. What is a lahar?
2. Is Mt. St. Helens still active?
3. How deep is the crater produced by Mt. St. Helens?
4. About how much money did the damage from Mt. St. Helens cost?
What word in the second paragraph means “incredible?”
1. unstable
2. epic
3. pyroclastic
4. significant
Mt. St. Helens…
1. still has minor eruptions.
2. continues to have major eruptions.
3. is a dormant volcano.
4. produced a crater nearly a mile deep.
Which of the following statements is false?
1. Mt. St. Helens produced catastrophic damage
2. Despite the incredible damage caused by the eruption, at least there were no deaths or injuries among people
3. The eruption of Mt. St. Helens was more powerful than the detonation of tens of thousands of atomic bombs
4. Scientists are currently studying Mt. St. Helens and similar volcanoes in the hopes of better predicting future eruptions