Bennett - Mount St. Helens Eruption EarthSci 8

What event occurred on May 18th, 1980?

• A volcanic eruption

• An earthquake

• A mudflow

• A steam explosion

Tags

NGSS.MS-ESS3-2

How many sub-events were there during the eruption?

• Three

• Five

• Seven

• Nine

What caused the debris avalanche?

• An earthquake

• A steam explosion

• Melting snow and ice

• Atmospheric pressure

Tags

NGSS.MS-ESS3-2

What was the equivalent blast energy of the steam explosion?

• 10,000 tons of TNT

• 15,000 tons of TNT

• 20,000 tons of TNT

• 25,000 tons of TNT

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What caused the enormous water wave on Spirit Lake?

• The debris avalanche

• The steam explosion

• The mudflows

• The pyroclastic flows

Tags

NGSS.MS-ESS3-2

What type of flows occurred on the afternoon of May 18th?

• Pyroclastic flows

• Mudflows

• Airfall debris

• Steam explosions

What is the primary difference between the standard geological story and the observations at Mount St. Helens?

• The speed of geological formations

• The origin of the earth

• The presence of volcanic eruptions

• The role of erosion and deposition

Tags

NGSS.MS-ESS2-2

What is the key to understanding catastrophic formations on Earth?

• The present is the key to the past

• The catastrophic event is the key to the past

• The geological formations at Mount St. Helens

• The eyewitness accounts of the eruption

Tags

NGSS.MS-ESS3-2

What process led to the formation of the layers in the valley?

• Slow and gradual sedimentation

• Freezing and dewatering of mud

• Dilute flow of sediment

• Erosion by mudflows

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

What can be learned from the study of mudflows at Mount St. Helens?

• The power and mobility of mud

• The threat of mud to human settlements

• The complexity of geological formations

• The erosion and deposition processes

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2