Question

engage: life after mt. st. helens: video reflection
instructions: answer the following questions based off of the video.

1. what catastrophic event occurred on may 18th, 1980, at mount st. helens?
2. describe the initial state of mount st. helens after the volcanic eruption, according to charlie crisafulli.
3. why was mount st. helens declared a protected area by the u.s. congress, and what role did it play in ecological research?
4. explain the geological context of mount st. helens and its location in the pacific ring of fire.
5. what triggered the volcanic explosion on may 18th, 1980, and what were the immediate consequences?
6. how did the u.s. forest service ecologist, charlie crisafulli, first react upon arriving at mount st. helens after the eruption?
7. explain the significance of the northern pocket gopher surviving near the eruption center.
8. describe the geological activity that led to the eruption at mount st. helens.
9. how did lupin plants and pocket gophers contribute to the early stages of plant recolonization on the slopes of mount st. helens?
10. what role did the roosevelt elk play in the regeneration process at mount st. helens?

Explanation:

1. The catastrophic event was a volcanic eruption.
2. Details would be from Charlie Crisafulli's description in the video.
3. It was declared protected likely for ecological reasons and was used for research on post - eruption ecosystems.
4. The geological context involves tectonic activity in the Pacific Ring of Fire.
5. The trigger and consequences would be based on geological and volcanic activity shown in the video.
6. His first reaction would be described in the video.
7. The survival of the Northern Pocket Gopher near the eruption center may have implications for ecosystem recovery.
8. Geological activity like tectonic plate movement and magma build - up led to the eruption.
9. Lupin plants and pocket gophers likely contributed to soil improvement and plant dispersal for recolonization.
10. Roosevelt elk may have influenced vegetation through grazing and seed dispersal in the regeneration process.

Answer:

1. A volcanic eruption occurred.
2. (Answer based on video details about Charlie Crisafulli's description).
3. (Answer based on video details about reasons for protection and research role).
4. (Answer based on video details about geological context and location in the Ring of Fire).
5. (Answer based on video details about trigger and consequences).
6. (Answer based on video details about his first reaction).
7. (Answer based on video details about significance of gopher survival).
8. (Answer based on video details about geological activity leading to eruption).
9. (Answer based on video details about their contribution to recolonization).
10. (Answer based on video details about their role in regeneration).