Exploring Weathering: Physical vs Chemical Processes

What are the two main types of weathering?

• Physical and Chemical

• Mechanical and Thermal

• Erosion and Deposition

• Biological and Geological

What causes physical weathering?

• All of the above

• Environmental factors

• Biological activities

• Chemical reactions

What is abrasion in the context of physical weathering?

• Freezing of water

• Scraping of rock surfaces

• Expansion due to heat

• Reaction with chemicals

How does frost wedging occur?

• By the movement of glaciers

• When water freezes and expands

• Through chemical reactions

• Due to the action of plants

Tags

NGSS.MS-ESS2-2

How does water contribute to physical weathering?

• All of the above

• By freezing and expanding

• Through chemical reactions

• By causing erosion

What is thermal stress?

• Stress from wind erosion

• Pressure from underground water

• Expansion and contraction due to temperature changes

• Stress caused by biological factors

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the main cause of chemical weathering?

• Chemical reactions

• Physical forces

• Biological activities

• Temperature changes

Tags

NGSS.MS-PS1-2

What happens during oxidation in rocks?

• Water replaces ions in rocks

• Rocks expand due to heat

• Iron combines with oxygen forming rust

• Water freezes and expands

Tags

NGSS.MS-PS1-2

What is the effect of oxidation on rocks?

• Makes them stronger

• Causes them to expand

• Weakens them

• Makes them impermeable

What is hydrolysis in the context of chemical weathering?

• Mixing of water with carbon dioxide

• Replacement of ions to form new substances

• Water causing rocks to expand

• Formation of rust

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-2