Wind (AQA A-Level Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Aeolian processes
Aeolian processes
Wind-driven processes in deserts
Why wind creates in hot deserts
Why wind creates in hot deserts
Heated air rises, cooler air replaces it creating wind
Why wind is effective in deserts
Why wind is effective in deserts
Barren surfaces, few features, little friction to slow wind
Abrasion process
Abrasion process
Wind-carried particles strike rock surfaces (sandblasting)
Deflation process
Deflation process
Wind removes fine particles, leaves coarse material behind
Reg/desert pavement
Reg/desert pavement
Surface of coarse pebbles left after deflation
Qattara Depression depth
Qattara Depression depth
134 metres below sea level
Suspension particle size
Suspension particle size
Less than 0.2 mm diameter
Saltation transport speed
Saltation transport speed
One-half to one-third of wind speed
Surface creep % of grain movement
Surface creep % of grain movement
25% of all grain movement