Understanding Landslides

What is the primary focus of the video on landslides?

• The economic impact of landslides

• The history of landslides

• The role of animals in landslides

• The science and prevention of landslides

Which type of landslide involves a large piece of earth moving down as a single unit?

• Flow

• Slide

• Topple

• Fall

What natural event can trigger a landslide by making the ground wet and heavy?

• Earthquake

• Volcanic eruption

• Strong winds

• Heavy rainfall

How can human activities like deforestation contribute to landslides?

• By stabilizing the ground

• By increasing soil fertility

• By reducing rainfall

• By removing roots that hold soil in place

What force is primarily responsible for pulling landslides downward?

• Magnetism

• Wind

• Friction

• Gravity

Which historical landslide was triggered by the eruption of Mount St. Helens?

• Viant Dam landslide

• Sierra Leone landslide

• Mount St. Helens landslide

• Himalayan landslide

What is a sign that a landslide might be imminent?

• Increase in animal activity

• Change in wind direction

• New cracks in the soil or pavement

• Sudden temperature drop

What is the purpose of building retaining walls?

• To create new habitats for wildlife

• To increase soil fertility

• To hold soil in place and prevent landslides

• To direct rainwater to slopes

How does planting vegetation help prevent landslides?

• By absorbing excess water

• By providing shade

• By stabilizing the soil with roots

• By attracting wildlife

What does the video suggest about the interconnectedness of natural systems?

• They only affect weather patterns

• They are part of a larger system that includes landslides

• They are unrelated to landslides

• They operate independently