Weathering, Erosion, and Soil

A rock dissolves. What type of weathering does this demonstrate?

• Mechanical
• Chemical
• Differential
• Abrasion

Wind blowing sand against other rock until it wears away the rock is an example of what process?

• Abrasion
• Chemical Weathering
• Erosion
• Oxidation

Oxygen reacting with iron and water creates rust. What do we call this process?

• Abrasion
• Chemical weathering
• Mechanical weathering
• Oxidation

The process in which sediment comes to rest and is laid down

• Erosion
• Weathering
• Deposition
• Abrasion

The removal of substances (like nutrients) from layers of soil due to water is called

• leaching
• abrasion
• nutrient loss
• desertification

What soil conservation technique involves farmers leaving old stalks behind when planting new crops?

• No-till farming
• Contour plowing
• Terracing
• Cover crops

What is the organic matter in soil called?

• bedrock
• subsoil
• parent rock
• humus

What type of weathering involves soft rock being weathered away, while harder rock gets left behind?

• chemical
• abrasion
• mechanical
• differential

How does surface area affect the rate of weathering?

• The larger the surface area, the faster it weathers.
• The smaller the surface area, the faster it weathers.
• Surface area does not affect the rate of weathering.
• Surface area slows down weathering.

A group of rivers and streams that drain land

• Watershed
• River system
• Tributary
• Delta