Mass Movement and Weathering Concepts

This video tutorial covers weathering and mass movement, focusing on their impact on coastal landscapes. It explains different types of weathering: biological, chemical, and mechanical, detailing processes like freeze-thaw and exfoliation. The video also discusses mass movement, including rockfalls, landslides, and slumping, highlighting their causes and effects on cliffs.

What is the primary cause of biological weathering?

• Temperature changes

• Rainfall

• Animal and plant activity

• Wind erosion

Which chemical weathering process involves carbonic acid reacting with limestone?

• Hydrolysis

• Carbonation

• Exfoliation

• Oxidation

What happens during freeze-thaw weathering?

• Rocks peel away due to temperature changes

• Water freezes and expands in rock cracks

• Rainfall dissolves rock minerals

• Salt crystals expand in cracks

Which type of weathering is also known as exfoliation?

• Chemical weathering

• Mechanical weathering

• Salt weathering

• Freeze-thaw

What is the main cause of mass movement?

• Wind

• Gravity

• Temperature changes

• Animal activity

What typically triggers rockfalls?

• Chemical reactions

• Freeze-thaw weathering

• Animal burrowing

• Heavy rainfall

What is a characteristic of a landslide?

• Caused by animal activity

• Formation of scree slopes

• Rapid movement of rock and soil

• Slow movement of soil

What is the main difference between rock slides and mud flows?

• Mud flows occur on flat terrain

• Rock slides are caused by chemical weathering

• Rock slides are slower than mud flows

• Rock slides involve large blocks, mud flows involve saturated soil

What is slumping often referred to as?

• Vertical drop

• Rotational slip

• Linear slide

• Horizontal shift

What role does water play in slumping?

• It freezes and expands

• It lubricates the gap between rock layers

• It evaporates and leaves salt crystals

• It causes chemical reactions