EOYE geography Flashcards
What to isobars join
Places at the same air pressure
What do countour lines join
They join places at the same height above see level
What are isobars drawn in
4mb intervals
Why do we study rivers
It’s an important part in the water cycle
What is a watershed
The imiginary lines over hills that separates one drainage basin from the next
What is a river channel
The river that gets wider as it flows downhill
What is a tributary
A small river or stream that joins the main river
What’s a source
The starting point of a river. It could be a spring or a melting glacier
What is a mouth
Where a river flows into a lake,see or ocean
What’s a confluence
The point where two rivers join
What’s a floodplain
Land that gets flooded when the river overflows
What is a reservoir and what is its purpose
A large lake. It’s purpose is for a river supply
What is a drainage basin
Is the area of land drained by a river and it’s tributarie
What are the major rivers in the British isles
Tay, fourth, r.clyde, Tyne, tees, Trent, r.hersey, r.thames, r.exe, r.avon, r. Severn
What is the upper course of a river called
The source
What is the middle course of a river called
The meander
What is the lower course of a river called
The mouth
What would you find in the source
Soggy moorland, uninhabitable, v shaped rally, rapids, waterfalls, heavy rainfall, orographic rainfall, hilly, steep slopes
What would u find in the meander
Flat agricultural land, meanders, wider channel, ox-bow lake, and more water
What would you find in the mouth
Flat land, flood plane, estuary, polluted water
How do waterfalls form
They form in the upper reaches of a river where two different rock types meet
What is part of the hydrologicle cycle
Rivers
What is transportation
Water in plants changing into water vapour in the air
What is condensation
Water vapour changes into water droplets
What is precipitation
Water falling from the sky
What is evaporation
Water in liquid forms changes in water vapour
What is surface run off
Water flowing downhill in streams
What is groundwater
Water that seeps into the ground and is transformed below the surface
What is interception
Is when vegetation catches precipitation
What is infiltration
Is the process by which rain soaks into the soil
What is throughflow
Water which flows sideways through the soil
What is permeable
Allows water to seep through rock
What are the causes of floods
Heavy rain for a long time, ground gets soaked, river fills up with water and rises over the banks
What are the factors that increases the flood risks
Wet soil, steep slopes, impermeable rock
What is river discharge
Amount of water in the river at any particular time
What is the time lag
The time between peak rainfall and peak discharge
What is peak rainfall
Amount of precipitation that falls at the peak of storm it is measured in mm
