Landslides flashcard

Front

What is mass movement?

Back

Mass movement refers to the downward movement of soil and rock due to gravity. It can occur rapidly or slowly and includes various types such as landslides, mudslides, and rockfalls.

Front

What is the primary force responsible for landslides?

Back

Gravity is the primary force responsible for landslides, pulling materials down slopes.

Front

How does slope gradient affect mass movement?

Back

Mass movement is more likely to occur and be faster on steep slopes due to the increased gravitational force acting on the materials.

Front

What are the different types of landslides?

Back

Types of landslides include falls, topples, spreads, flows, and slides, each characterized by the type of movement and material involved.

Front

True or False: A previous landslide reduces the likelihood of future landslides in the same area.

Back

False. If a landslide has occurred in an area, it may indicate that conditions are favorable for future landslides.

Front

Can human activities contribute to landslides?

Back

Yes, human activities such as deforestation, construction, and mining can destabilize slopes and increase the risk of landslides.

Front

What is a landslide fall?

Back

A landslide fall occurs when rock or soil suddenly falls from a steep slope or cliff, often due to gravity.

Front

What is a landslide flow?

Back

A landslide flow involves the movement of saturated soil and debris down a slope, often resembling a fluid motion.

Front

What role does water play in landslides?

Back

Water can increase the weight of soil and reduce friction, making slopes more susceptible to failure and landslides.

Front

What is the impact of vegetation on slope stability?

Back

Vegetation helps stabilize slopes by anchoring soil with roots and absorbing water, reducing the risk of landslides.