Weathering, Erosion, and Deposition Concepts

The video tutorial explains weathering, erosion, and deposition. Weathering is the breakdown of rocks into smaller pieces, with two main types: physical and chemical. Physical weathering is caused by physical forces like ice and roots, while chemical weathering involves chemical reactions that change the rock's composition. Erosion is the movement of weathered sediment by wind, water, or gravity. Deposition occurs when sediment is dropped in a new location, such as a riverbank or beach.

What is the primary result of weathering?

• Combining rocks into larger formations

• Melting of rocks

• Breaking down of rocks into smaller pieces

• Formation of new rocks

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

• Ice

• Temperature change

• Growing roots

• Acid rain

What remains unchanged in a rock after physical weathering?

• Its shape

• Its color

• Its location

• Its size

Chemical weathering involves changes in which of the following?

• Rock's temperature

• Rock's color and composition

• Rock's location

• Rock's size

Which of the following can cause chemical weathering?

• Ice

• Wind

• Gravity

• Acid rain

What is erosion primarily responsible for?

• Breaking rocks into smaller pieces

• Forming new rocks

• Moving weathered sediment from one place to another

• Changing the color of rocks

Which natural force is NOT involved in erosion?

• Fire

• Water

• Wind

• Gravity

What happens during deposition?

• Sediment changes color

• Sediment is dropped in a new location

• Sediment is moved to a new location

• Sediment is broken down

Where might sediment end up after deposition?

• In the sky

• On a riverbank

• In a forest

• Inside a volcano

What is the final stage of the erosion process?

• Weathering

• Deposition

• Melting

• Combustion