What is erosion?

• A process that builds up rocks on the Earth's surface

• A natural process that shapes the Earth's surface by wearing away rocks and soil

• A method of planting trees to prevent soil loss

• A technique used to create artificial landscapes

What is an example of physical erosion?

• Rusting of iron-rich rocks

• Formation of carbonic acid

• Freeze-thaw weathering

• Dissolving limestone

What happens during freeze-thaw weathering?

• Rocks melt and reform

• Water seeps into cracks, freezes, and expands

• Rocks dissolve in acid rain

• Plants grow through rocks

What is a common example of chemical erosion?

• Freeze-thaw weathering

• Carbonation process

• Wind erosion

• Soil compaction

What does carbonic acid do in chemical erosion?

• Builds up rocks

• Dissolves limestone and carbonate rocks

• Freezes water in cracks

• Causes plants to grow

What is one negative impact of erosion?

• Creation of mountains

• Soil loss and decreased agricultural productivity

• Formation of valleys

• Increase in plant growth

What are the two main types of weathering?

• Wind weathering and water weathering

• Physical weathering and chemical weathering

• Ice weathering and gravity weathering

• Soil weathering and rock weathering

What is another name for physical weathering?

• Mechanical weathering

• Chemical weathering

• Biological weathering

• Thermal weathering

Which process causes rocks to expand and contract, leading to fractures?

• Temperature changes

• Ice formation

• Pressure release

• Oxidation

What happens when water seeps into cracks in rocks and freezes?

• The rock expands and contracts

• The rock dissolves

• The rock forms carbonic acid

• The rock releases pressure