Upgrade to remove ads
IB Geography - Freshwater Key Terms (up to now)
Terms in this set (58)
The movement of water between the ocean, land and atmosphere
Water on land which changed into water vapor as it goes into the atmosphere (output)
Water that is given off from plants and returns to the atmosphere as water vapor (output)
Water moves down from the surface into the soil (transfer)
Water moves down from the soil into the permeable rock layer (transfer)
Water held in the rock below the soil layer
Slow and horizontal movement of water in the rock (transfer)
Water held in the soil (store)
Trees catch and collect water on leaves which prevents it from hitting the ground (store)
Horizontal movement of water through the soil to a river or ocean (transfer)
Rock that allows water to pass through (store)
Rock that doesn't allow water to pass through
Water moving down trunks or stems to the ground (transfer)
The level below which is completely saturated with water
Overland Flow / Surface Runoff
Downward transfer of water along the surface
Rain, hail, sleet, or snow released from the clouds in the atmosphere. It is the main input
The high ground (hills) that separates two or more drainage basins
The area drained by a river and its tributaries
The area where the river begins
Where the river meets the sea
Point where two or more rivers meet
A small river or stream
The volume of water passing a given point over a set period of time. It is measured in cumecs (cubic meters per second)
The cross section of the river channel in contact with water
Measures efficiency of the river. Calculated by dividing the cross sectional area by the wetted perimeter . Higher value = more efficient
The seasonal variation in the flow of the river
Storm Hydrograph (Flood hydrograph)
A graph that shows how a river channel responds to key processes in the water cycle. Time is on the x-axis and discharge on the y-axis
Cutting down of trees on a large scale
The planting of trees
The wearing away of the river bed, banks and material in the river. There are 4 types: abrasion, attrition, hydraulic action, and corrosion
Type of erosion where rocks and particles scrape away at the river bed and banks
Type of erosion: acids in the water dissolve certain types of rocks like chalk and limestone
Type of erosion: the force of air and water breaking away the sides of a river. This is the most powerful type of erosion
Type of erosion: Particles collide with each other in the river and break down to become smaller and more rounded
The movement of material in the river. There are 5 types: traction, saltation, suspension, solution, and flotation.
Type of transportation: the heaviest material is dragged and rolled along the river bed
Type of transportation: Heavier particles which are bounced or bumped along the river bed
Type of transportation: small particles carried within the water
Type of transportation: dissolved chemical load which is carried in the water
Type of transportation: leaves and twigs which are carried on the surface of the river
A river process when material and sediment is dropped by the river when there is a decrease in gradient or velocity or increase in friction
Silt and clay which has been deposited outside the river channel
A bend in the river usually found in the lower course
An embankment next to a river channel made of alluvium. It can be natural or man-made
A flat area next to a river channel which floods periodically
a meander which has been cut off from the river channel due to increase in discharge
A property of soils and rocks indicating their capacity for transmitting water, because of their porosity and/or perviousness.
When fluid flows in parallel layers without any disruption between the layers
Consists of a series of erratic eddies, both vertical and horizontal, in a downstream direction.
The hour of greatest rainfall during the storm.
The point (time) of maximum river discharge caused by the storm.
The time between Peak Rainfall and Peak Discharge.
The period of rising river discharge following a period of rainfall.
The period of time when the river's discharge is falling after it has reached Peak Discharge.
The average level of flow (discharge) of the river caused by water flowing into the river from tributaries and groundwater.
The quantity of sediment that can be transported by a stream/river.
Load Particle Size
The average size of the sediment particles being transported by a river.
Ratio of the cross-sectional area of the channel and the length of its wetted perimeter.
YOU MIGHT ALSO LIKE...
IB Geography - Freshwater Key Terms
River Environments Vocab
GCSE Geography - Rivers
OTHER SETS BY THIS CREATOR
IGCSE Population Dynamics
IGCSE CIE Geography: 1.6 - Urban Settlem…
IB Geography - Oceans and Coasts
Cambridge IGCSE Geography- Earthquakes and Volcano…