Which statement about the May, 1980, eruption of Mount St. Helens is false?

Question

Question: Which statement about the May, 1980, eruption of Mount St. Helens is false?

Options:

1. During the eruptive period, the mountain peak was substantially built up by new lava flows and pyroclastic debris.
2. Plumes of ash rose high into the atmosphere during the major eruptive events.
3. Mudflows accompanied the major eruptive events.
4. The most powerful explosive event was preceded by a massive landslide.

Answer 1

1. During the eruptive period, the mountain peak was substantially built up by new lava flows and pyroclastic debris.

The statement about the May, 1980, eruption of Mount St. Helens is FALSE is "During the eruptive period, the mountain peak was substantially built up by new lava flows and pyroclastic debris".