Ecological Succession After the Mt. St. Helens Eruption

What time did Mount St. Helens erupt on May 18, 1980?

• 10:15 AM

• 8:32 AM

• 9:00 AM

• 7:45 AM

What natural event caused mud flows on Mount St. Helens?

• Earthquakes

• Heavy rainfall

• Forest fires

• Melting glaciers

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

How did the landscape change immediately after the eruption?

• It became a lush forest

• It was unaffected

• It turned into a large lake

• It was covered in volcanic ash

Tags

NGSS.MS-ESS2-2

Which plant was identified as the first colonizer on the pumice plain?

• Cedar bush

• Pine tree

• Mountain daisy

• Prairie lupine

What animal survived the eruption by living underground?

• Northern pocket gopher

• Mountain goat

• Black bear

• Elk

Tags

NGSS.MS-LS4-4

How do northern pocket gophers contribute to the ecosystem post-eruption?

• By digging water channels

• By planting seeds

• By preying on smaller mammals

• By mixing nutrient-rich soil with volcanic ash

What unexpected discovery was made about amphibians at Mount St. Helens?

• They mostly survived the eruption

• They completely disappeared

• They developed new species

• They mutated due to the ash

Tags

NGSS.HS-LS4-5

What effect did the eruption have on Spirit Lake?

• It dried up completely

• It overflowed into the valley

• It turned into a meadow

• It was filled with volcanic debris

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-4

What was Charlie Crisafulli's role at Mount St. Helens?

• Research ecologist

• Park ranger

• Volcanologist

• Tour guide

What is Charlie Crisafulli's view on a potential future eruption?

• He fears it could be destructive

• He sees it as a valuable research opportunity

• He believes it should be prevented

• He hopes it will boost tourism

Tags

NGSS.MS-ESS3-2