Water (AQA A-Level Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
Exogenous rivers
Exogenous rivers
Watercourses starting outside desert boundaries
Endoreic rivers
Endoreic rivers
Rivers in closed basins ending inland in lakes/swamps
Ephemeral rivers
Ephemeral rivers
Rivers flowing periodically, typically after heavy rain
River Nile origin & destination
River Nile origin & destination
Ethiopian highlands to Mediterranean Sea via North Africa
Sahara avg annual rainfall
Sahara avg annual rainfall
Approximately 25 mm
Desert storm rainfall vs annual avg
Desert storm rainfall vs annual avg
Can deliver 2-3 times the annual average
Sheet flooding
Sheet flooding
Extensive shallow floods from overland flow on impermeable land
Wadis (arroyos)
Wadis (arroyos)
Steep-sided narrow valleys in deserts
Ephemeral rivers lag time characteristic
Ephemeral rivers lag time characteristic
Extremely short lag times
Sahara high plateaux rainfall
Sahara high plateaux rainfall
100 mm in Ahaggar & Tibesti regions