Question

known for its unusually vivid blue color, crater lake is the deepest lake in the united states. crater lake was formed more than 7,000 years ago when the volcanic peak mount mazama erupted. the explosive eruption ejected so much material from the interior of mount mazama that it destabilized the mountain. as a result, the peak collapsed and a large caldera, or crater, formed. rocks and ash from the eruption filled part of the caldera and, over time, rain and melted snow accumulated in the caldera to create crater lake.

this question has two parts. answer part a, and then answer part b.

part a
what does the word destabilized mean in the paragraph?

1. covered
2. heated
3. soaked
4. weakened

part b
which detail from the paragraph best supports the correct answer from part a?

1. \deepest lake in the united states\
2. \ejected so much material\
3. \the peak collapsed\

4.
ain and melted snow accumulated\

Explanation:

Part A

To determine the meaning of "destabilized", we analyze the context. The eruption ejected much material from Mount Mazama, leading to the peak collapsing. "Covered", "heated", and "soaked" don't relate to a mountain collapsing. "Weakened" fits as ejecting material would weaken the mountain, causing collapse.

We need a detail supporting that the mountain was destabilized (weakened). "Ejected so much material" explains what caused the mountain to be destabilized (as ejecting material would weaken it). The other options don't relate to the mountain's stability: "deepest lake" is about the lake, "the peak collapsed" is the result, and "rain and melted snow accumulated" is about the lake's formation.

Answer:

1. weakened

Part B