Erosion And Transportation Flashcards
Four types of erosion
Hydraulic action
Abrasion
Solution
Attrition
Types of transportation
Led Saltation Traction Solution Suspension
What is saltation?
Material is bounced along the beach
What is traction?
Rocks are rolled along the seabed
What is solution?
Dissolved material is transported
What is suspension?
Material is carried along by moving water
What is hydraulic action?
Air becomes trapped in joints
When a wave breaks the trapped air is compressed
Weakens cliff faces and causes erosion
What is abraision?
Rock and sand grinds down cliffs like sandpaper
What is solution (erosion) ?
Acids contained in sea water dissolve some types of rock
What is attrition?
Rocks and pebbles smash into each other as they break and become smoother
What is freeze thaw weathering?
Occurs when water continually seeps into cracks, freezes and expands eventually breaking the rock apart