Karst Landscape Concepts and Features

The video discusses karst landforms, focusing on their formation and characteristics. It highlights the karst topography in south-central Indiana, where limestone is close to the surface. Key landforms include caves, caverns, sinkholes, karst valleys, and disappearing streams. The video explains how these features form due to chemical weathering, carbonation, and the lowering of the water table, using analogies like a golf ball's dimples to describe the pitted surface.

What is a key characteristic of a karst landscape that resembles a golf ball?

• Rocky and jagged surface

• Flat and even surface

• Pitted and bumpy surface

• Smooth surface

Why do karst areas have poor surface drainage?

• Due to the high elevation

• Because the dimples hold and store water

• Due to the presence of impermeable rocks

• Because of the dense vegetation

What geological feature is abundant in south-central Indiana?

• Granite formations

• Sand dunes

• Limestone near the surface

• Volcanic rocks

How are caves and caverns typically formed in karst areas?

• Through glacial erosion

• Through limestone and carbonation

• By volcanic activity

• By tectonic movements

What happens when underground caverns collapse in karst areas?

• They create sinkholes

• They result in lakes

• They cause earthquakes

• They form mountains

What is the role of the water table in the formation of caves?

• It causes the caves to collapse

• It lowers and exposes the caves to air

• It remains constant and has no effect

• It raises and fills the caves with water

What is a karst valley?

• A valley formed by river erosion

• A valley created by linear depressions

• A valley formed by glacial activity

• A valley created by tectonic shifts

How do disappearing streams behave in karst regions?

• They form large lakes

• They flow continuously on the surface

• They evaporate quickly

• They go underground and re-emerge elsewhere

What is the primary cause of the formation of karst valleys?

• River erosion

• Volcanic activity

• Linear depressions from sinkholes

• Wind erosion

What happens to streams in karst areas when they encounter sinkholes?

• They form waterfalls

• They create deltas

• They disappear underground

• They become stagnant