Weathering , Erosion and Deposition

What is the process by which rocks are broken down into smaller pieces by physical forces?

• Erosion

• Dissolution

• Weathering

• Deposition

Answer explanation

Weathering is the process by which rocks are broken down into smaller pieces by physical forces.

Which type of weathering involves the chemical breakdown of rocks?

• Mechanical weathering

• Physical weathering

• Chemical weathering

• Biological weathering

Answer explanation

Chemical weathering involves the chemical breakdown of rocks, making it the correct choice among the given options.

What landform is created when sediment is deposited at the mouth of a river?

• Canyon

• Plateau

• Delta

• Archipelago

Answer explanation

A delta is formed when sediment is deposited at the mouth of a river, creating a landform with multiple channels and distributaries.

How does erosion impact the landscape?

• Erosion changes the physical features of the land.

• Erosion only affects man-made structures

• Erosion creates new landforms

• Erosion has no impact on the landscape

Answer explanation

Erosion changes the physical features of the land.

What is the main difference between weathering and erosion?

• The main difference between weathering and erosion is that weathering breaks down rocks, while erosion transports the broken down materials.

• Weathering is caused by human activities, while erosion is a natural process.

• Weathering and erosion both involve the movement of rocks.

• Weathering only occurs in deserts, while erosion only occurs near water bodies.

Answer explanation

The main difference between weathering and erosion is that weathering breaks down rocks, while erosion transports the broken down materials.

Name a type of weathering that occurs when water seeps into cracks in rocks and freezes, causing the rock to break apart.

• Snow accumulation

• Frost wedging

• Ice melting

• Rain erosion

Answer explanation

Frost wedging is the type of weathering that occurs when water seeps into cracks in rocks and freezes, causing the rock to break apart.

What landform is created when wind deposits sand in a mound or ridge?

• Sand mountain

• Sand dune

• Sand hill

• Sand ridge

Answer explanation

A sand dune is created when wind deposits sand in a mound or ridge, making it the correct choice among the options provided.

How does erosion contribute to the formation of valleys?

• Erosion wears away the land, creating channels that eventually form valleys.

• Erosion leads to the expansion of valleys.

• Erosion has no impact on the formation of valleys.

• Erosion creates mountains instead of valleys.

Answer explanation

Erosion wears away the land, creating channels that eventually form valleys.

Explain how weathering and erosion work together to shape the Earth's surface.

• Weathering and erosion work independently and do not affect each other.

• Weathering breaks down rocks into smaller pieces, and erosion transports these pieces to new locations, reshaping the Earth's surface.

• Weathering creates new rocks, while erosion removes them from the Earth's surface.

• Weathering and erosion have no impact on shaping the Earth's surface.

Answer explanation

Weathering breaks down rocks into smaller pieces, and erosion transports these pieces to new locations, reshaping the Earth's surface.

What type of weathering occurs when rocks are physically broken down into smaller pieces without changing their chemical composition?

• Chemical weathering

• Biological weathering

• Mechanical weathering

• Volcanic weathering

Answer explanation

Mechanical weathering occurs when rocks are physically broken down into smaller pieces without changing their chemical composition.