Rivers 🏞️ Flashcards
What is a watershed in a river basin?
An imagary outline of a river basin. An area of high land
What is hydraulic action?
This is the sheer power of the water as it smashes against the river banks.
What is a valley?
An area with higher ground on either side. Where a river runs through
What is a floodplain?
The land either side of the river which may flood if the river overflows
What is the mouth of a river?
Where the river end and meets the sea
What is a confluenece?
The meeting point of two rivers
What is a tributaty?
Smaller rivers meeting a main one .eg, the hogsmill
What is the source of a river?
Where the river starts
What is a river basin?
The area inside the watershed where all rain will collect into a river
Explain attrition?
Waves cause rocks and pebbles to smash into eachother and become smaller and more rounded
What is abrasion?
When waves break, the sedement (rock) is thrown and rubbed against the cliff
What is solution?
Weak acids in sea water (caused through the transpiration of plants) will slowly dissolve certain types of rock such as chalk and limestone as they contain calcium carbonate
What is lateral erosion?
Erosion sideways
What is vertical erosion?
Ersoion downwards
What is the bedload?
Heavier material carried along the bottom of a river
