Oso Landslide
What state did the Oso landslide occur in?
Washington!
What natural instances cause landslides to occur? (Name one)
Heavy rains and earthquakes
Assign the vocabulary word to the definition: The rapid movement of large amounts of rock and soil.
Landslides
What year did the Oso landslide occur?
2014
What earth materials do landslides usually effect? (name two)
Rock, debris, and dirt
Assign the vocabulary word to the definition: When soil gradually moves down a slope because of the formation of ice.
Creep
What was the Oso's landslide's average speed?
What is the ultimate force that causes landslide?
Gravity
Assign the vocabulary word to the definition: Rapid mass movements of soil and other sediment mixed with water.
Mudflows
How many fatalities did the Oso landslide cause?
43
What is the average annual number of fatalities in the USA caused by landslides?
25
Assign the vocabulary word to the definition: When weak layers of soil or rock move downslope in a single unit.
Slumping
Why did the Oso landslide have such a large magnitude?
The water content
LIDAR (light detection and ranging)
Which form of mass movement occurs more when the soil is rich in clay?