Exogenetic Processes - Part I
Exogenetic processes are external forces like weathering and erosion that shape Earth's surface from outside, wearing down and transporting
Core concept
Weathering is the breaking down of rocks in place, without movement, caused by physical (temperature changes), chemical (reactions), or biological factors.
How it works
Physical weathering includes processes like frost action, where water freezes and expands in rock cracks, breaking the rock apart.
Why it matters
Chemical weathering involves chemical reactions, like oxidation (rusting) or dissolution, that break down rock minerals over time.
Key detail
Erosion, unlike weathering, involves the movement of broken-down material by agents like water, wind, or ice to new locations.
Exam highlight
Key diagram

Keywords worth remembering
Trending
Most searched
Study resources
Notes & downloads
Quick notes
• Weathering: breaking down rocks in place.
• Types: physical, chemical, biological.
• Physical: frost action, temperature changes.
• Water freezes, expands, breaks rock.
• Chemical: oxidation, dissolution reactions.
• These break down minerals over time.
• Erosion: moves broken material elsewhere.
• Agents: water, wind, ice.