Understanding Landslides

What is the primary focus of the video on landslides?

• The history of landslides in Europe

• The impact of landslides on wildlife

• The mysteries and science behind landslides

• The economic cost of landslides

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

• Topple

• Slide

• Fall

• Flow

What natural event can cause the ground to become too wet and heavy, leading to landslides?

• Snowfall

• Drought

• Rain

• Wind

How can human activities like deforestation contribute to landslides?

• By reducing rainfall

• By removing roots that hold soil in place

• By stabilizing the ground

• By increasing soil fertility

What is the force that ultimately causes landslides to move downward?

• Friction

• Magnetism

• Wind

• Gravity

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

• The Viant Dam landslide

• The Sierra Leone landslide

• The Freetown landslide

• The Mount St. Helens landslide

What is a sign that a landslide might be imminent?

• Increased bird activity

• Unusual animal behavior

• New cracks in the soil or pavement

• Sudden temperature drop

What is one method used to prevent landslides by stabilizing the soil?

• Building skyscrapers

• Planting grass

• Constructing retaining walls

• Drilling for oil

How does planting vegetation help in preventing landslides?

• By absorbing sunlight

• By providing shade

• By holding 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

• They are unrelated to landslides

• They operate independently