Weathering, Erosion, and Deposition Concepts

The video explains how the Earth's surface is constantly changing due to weathering, erosion, and deposition. Weathering breaks down rocks through physical, biological, and chemical processes. Erosion moves these materials via water, ice, wind, or gravity. Deposition occurs when these materials settle in new locations, forming features like deltas and sand dunes. The video also covers karst topography, characterized by caves and sinkholes, resulting from chemical weathering of limestone.

What is the primary cause of the Earth's surface constantly changing?

• Earthquakes

• Human activities

• Volcanic eruptions

• Weathering, erosion, and deposition

Which of the following is NOT a type of physical weathering?

• Biological activity

• Oxidation

• Abrasion

• Frost wedging

How does frost wedging contribute to physical weathering?

• By dissolving rocks

• By expanding water in cracks

• By chemical reactions with oxygen

• By plant root growth

What is the result of oxidation in chemical weathering?

• Formation of sinkholes

• Creation of rust

• Expansion of rocks

• Peeling of rock layers

Which agent of chemical weathering is responsible for forming carbonic acid?

• Acid rain

• Carbon dioxide

• Water

• Oxygen

What landscape feature is created by both weathering and erosion?

• Mountains

• Canyons

• Plains

• Volcanoes

Which process involves the movement of rock and soil fragments by natural forces?

• Deposition

• Erosion

• Sedimentation

• Weathering

What is a delta?

• A type of erosion

• A landform created by deposition

• A type of weathering

• A mountain range

How are sand dunes formed?

• By water erosion

• By wind deposition

• By glacial movement

• By volcanic activity

What is left behind by a melting glacier?

• A delta

• A sinkhole

• A moraine

• A canyon