The Hydrological (Water) Cycle and Drainage Basin Systems Practice Test

These questions are part of the practice quiz. Start practicing

• Which term describes water that runs over the land surface during or after a rain event?
• Which term describes water that saturates the soil and fills all available pore spaces?
• Overland flow occurs when
• Using channels to supply water to land or crops?
• What is the difference between evaporation and transpiration?
• What is groundwater discharge and its significance for river regimes?
• Which term describes the movement of elements from one store to another in the hydrological system?
• Which phrase best describes a river's journey from source to mouth?
• Which feature refers to the place where groundwater flow reaches the Earth's surface?
• During which condition is saturation-excess runoff most likely to occur?
• Why is infiltration capacity often higher in coarse-textured soils than in fine-textured soils?
• Which term describes the brackish water zone where river water mixes with seawater?
• What is a catchment and how does it relate to a drainage basin?
• Which term describes the losses from the drainage basin?
• What are lines of concentrated water flow between soil horizons called?
• What is a flood hydrograph and what are its main features?
• Which term describes water entering the soil at the surface?
• What term describes the amount of moisture in the soil below which plants will not be able to obtain sufficient water and wilting occurs?
• Baseflow is defined as the portion of streamflow that is derived from groundwater discharging into the channel.
• Any form of water that falls from clouds to Earth's surface includes rain, snow, sleet, hail is ...
• Which basin shape tends to increase lag time and reduce peak discharge?
• What term describes the amount of water present in the soil that is accessible for plants to absorb through their roots?
• Which land management factor can influence infiltration?
• Which component of a hydrograph represents the decline from peak discharge toward baseflow?
• Which term describes pre-existing levels of soil moisture?
• Which process describes water moving from soil and plant surfaces into the atmosphere as water vapor?
• What is a piezometer and what does it measure in hydrology?
• How does rainfall intensity on urbanized surfaces influence flood risk?
• Which property describes the volume fraction of voids in rock that can store water?
• Describe the water budget components for rivers and how to measure them.
• The term for water retained on the surface for a short time before it either evaporates or infiltrates.
• What term describes the unchanneled flow of water over a soil surface?
• What term describes the place where two rivers join to form a larger river?
• Water moving through soil and rocks is known as?
• Which term refers to locations where elements are stored?
• Plants take up liquid water from the soil and release water vapor into the air from their leaves is called ...
• Which term describes the loss of water from plant leaves as water vapor?
• Baseflow recession analysis is used to infer properties of an aquifer. Which of the following does it primarily help quantify?
• The part of the environment where life exists?
• Which term denotes the total amount of water held in underground aquifers?
• Water vapor in the atmosphere cools and turns into tiny liquid water droplets, forming clouds
• The period when soil is saturated and water cannot enter, so flows over the surface.
• How do temperature, humidity, wind speed, and solar radiation influence evapotranspiration rates?
• Which term best matches the component that stores water in the landscape?
• What term describes the loss of water that has been intercepted by vegetation and later becomes transpiration?
• Which term indicates the portion of river discharge sustained by groundwater inflow?
• The thin layer of gases surrounding the Earth is called the ...
• What term refers to the line that divides adjacent drainage basins?
• What is a unit area hydrograph and how is it computed?
• Which term best describes a system that exchanges energy and matter with its surroundings?
• Which term refers to the portion of the environment capable of supporting life?
• Which term is used for the geographic area that contributes water to a river system, including streams and groundwater?
• How does vegetation affect interception storage and runoff timing?
• Removal of water from water bodies from a surface or underground source.
• Which statement best describes infiltration-excess runoff?
• Define drainage basin and drainage pattern; give examples.
• The portion of a river's discharge that is supplied by groundwater seeping into the bed is called baseflow.
• A drainage basin is defined as the land area that contributes water to which feature?
• How does basin shape influence flood response and lag time?
• Which statement best distinguishes stormflow from baseflow?
• Which term denotes soil that is at full water capacity and cannot hold more water?
• What is the term for the land area from which surface runoff drains into a particular river?
• Which term refers to the physical pathway of a river?
• Which term is water leaving through the deeper subsurface into other basins?
• What term describes the movement of water in a river's channel?
• What term describes the junction of two rivers where they join?
• Which term describes the practice of supplying water to land or crops through channels?
• Which term describes water that moves across the land surface (runoff)?
• What term describes the overall circulation of water between Earth's oceans, atmosphere, and land?
• Water infiltrates and percolates through soil and rock layers to replenish aquifers/groundwater stores?
• Which statement best describes how climate change can affect baseflow?
• Which statement best describes how vegetation cover and land management influence near-surface hydrological processes?
• Which condition would most likely increase evapotranspiration rates?
• Which term describes the solid outer layer of the Earth including crust and upper mantle?
• Which component is included in a flood hydrograph?
• Water that trickles along twigs and branches and finally down the main trunk is called?
• In the drainage basin water balance P = ET + Q + ΔS, what does ΔS represent?
• The upper layer of the permanently saturated zone within solid rocks and sediments is the water table.
• What term describes the point where two rivers merge to form a single river?
• What is baseflow in a river, and why is it important?
• When precipitation exceeds the infiltration capacity of the soil, the resulting flow is known as Hortonian flow.
• Which term denotes the water content in the soil that is available to plants for uptake?
• Which instruments are commonly used to measure precipitation and soil moisture in watershed studies?
• What is interception storage and how does vegetation affect it?
• In a basin with large size and gentle slope, lag time is typically:
• Height above sea or ground level?
• How do soil type and soil moisture affect infiltration rate and runoff generation?
• How can hydrological models be useful in predicting runoff in ungauged basins?
• When precipitation exceeds potential evapotranspiration, there is some refilling of water in dried-up soil pores.
• What term describes the process whereby an increasing proportion of the population lives in urban settlements?
• Which term corresponds to water that falls through vegetation?
• Describe the components of a basin water budget and its primary use.
• Water moving beneath the earth's surface toward rivers and oceans is called what?
• Which term means the movement of elements from one store to another?
• A system that does not allow transfer of energy or matter outside its boundaries?
• What is the degree to which soil moisture falls below field capacity?
• Which property refers to the rock's capacity to hold water within its pore spaces?
• What term describes a river or stream flowing into a larger river?
• What is the imaginary line dividing drainage basins?
• What is a unit hydrograph and how is it used in rainfall-runoff analysis?
• The movement of water within the river channel
• What is capillary rise and how can it affect soil moisture near-surface layers?
• Which term is the amount of water in the active layer of soil (top 1-2 m) and main source of water for agriculture and natural vegetation?
• What is hydrograph separation and why is it performed?
• Which term describes water in its gaseous state?
• Define interception storage capacity and identify the factors that influence it.
• Water that flows over the land surface?
• Which term means the height above sea level or above ground level?
• What term describes the amount of water held in the soil after excess water drains away — at saturation or near-saturation?
• Why is groundwater recharge essential for hydrology?
• Which term describes water withdrawn from water bodies for human use?
• What is a hydrological cycle diagram and why is it useful?
• Which process involves downward movement of water through soil due to gravity?
• How do aquifers contribute to baseflow during dry periods?
• What term refers to visible masses of very fine water droplets or ice particles suspended in the atmosphere?
• How do humid temperate and arid climates influence hydrological response and runoff characteristics?
• What are the ecological and hydrological implications of rising groundwater tables in catchments?
• What is an aquifer and how do confined and unconfined types differ?
• Which term denotes the soil moisture level existing before a rainfall or infiltration event?
• A hydrograph plots discharge versus time; what are its key components?
• Differentiate infiltration capacity from actual infiltration rate.
• Water moving from the soil into rivers and streams?
• How does soil compaction influence infiltration and runoff?
• How does drainage density affect the speed and magnitude of runoff in a basin?
• What does drainage density indicate about a basin?
• Which term describes the volume of water stored within aquifers?
• What term describes water being blocked from reaching the ground by vegetation?
• What term describes the temporary retention of water on the Earth's surface?
• The volume of water flowing through a river at a specific point is discharge.
• The solid upper part of the Earth comprising the crust and the upper mantle?
• Which term describes the place where groundwater naturally emerges at the Earth's surface?
• What is a dendritic drainage pattern and what conditions favor it?
• What term refers to the entire area drained by a river and its tributaries?
• The process by which a liquid changes into a gas is ...
• Which term describes the process by which water is drawn to the surface through capillary action?
• What is a primary use of a basin water budget?
• Which term best describes the upper boundary between saturated and unsaturated zones in an aquifer?
• What term describes the maximum rate at which rain can be absorbed by soil under current conditions?
• The place where a river ends and merges into a larger body of water is called its what?
• Which term refers to the unchanneled flow of water over a soil surface?
• What is the unit area hydrograph used for in design and planning?
• Define interception losses and explain how land use affects them.
• Infiltration is water entering the soil at the surface; Percolation is downward movement through soil/rock to groundwater.
• How is drainage density calculated?
• Which mechanism explains how vegetation improves infiltration?
• Which term corresponds to elements that produce the water cycle?
• Which term describes water that falls through gaps in the vegetation or drops from leaves or twigs?
• Which term corresponds to plants?
• What term describes an area that stores water, often located behind dams?
• What is the water balance equation for a drainage basin?
• What term describes the ability of rock to transmit water through joints and fissures?
• What term describes the origin point of a river, where its flow begins?
• Which term describes the upper part of a river where the water originates, usually in highland areas?
• Which practices are examples of green infrastructure for flood risk reduction?
• All the water that is stored in rivers, streams and other drainage channels.
• In rainfall-runoff modeling, what is the unit hydrograph used for?
• A system that allows the movement of energy and matter across its boundaries?
• Which term refers to the boundary that separates drainage basins of a landscape?
• Which term denotes fresh water located in the subsurface pore space of soil and rock, and water flowing within aquifers below the water table?
• If water moves rapidly along soil horizons due to concentrated flow, which term applies?
• The permanently saturated zone within solid rocks and sediments is the phreatic zone.
• Explain soil moisture storage and its role in runoff generation.
• Baseflow recession analysis can reveal which aquifer properties?
• What is flood frequency analysis and why is it important for drainage design?
• What factors most directly control whether infiltration-excess or saturation-excess runoff dominates during a rainfall event?
• An area of land from which rain flows into a particular river or lake is a ...
• What term best describes an area that stores water, often located behind dams?
• How might climate change alter the hydrological cycle in drainage basins?
• Which term describes the trend of increasing proportion of population living in urban settlements?
• The volume of water held within aquifers.
• Name three strategies to mitigate flood risk in drainage basins and briefly describe them.
• Which is a main store in the hydrological cycle?
• What term describes the conversion of a solid into a vapour with no intermediate liquid stage?
• Which term best describes the continuous movement of water through oceans, the atmosphere, and land?
• Which factor would most likely cause a flood hydrograph with a higher peak and shorter lag time?
• Which term describes the highland origin of a river, commonly called its headwaters?
• What term describes a rock formation that allows water to move through, such as sandstone, and must occur above a layer that prevents seeping away?
• Which layer of underground rock is seasonally wetted and seasonally dries out?
• Also known as overland flow; this is the flow of water that occurs when excess water from rain, meltwater, or other sources flows over the earth's surface.
• The process by which water moves from the earth to the air through evaporation and transpiration is ...
• Evapotranspiration is the combination of which processes?
• Which term is the physical pathway of a river?
• Which term describes the deficit of soil moisture relative to field capacity?
• Which term describes the moisture threshold below which wilting occurs?
• Which feature is typically formed at the mouth of a river where it enters the sea or a lake?
• Explain percolation and its role in groundwater recharge.
• What is the difference between surface storage and soil moisture storage?
• Which term describes the refilling of soil moisture when rainfall exceeds evapotranspiration?
• What is the term for the point where a river ends by flowing into a larger body of water?
• Which process describes the entry of water from the ground surface into the soil?
• How does hillslope gradient influence runoff velocity and lag time?
• Which term describes groundwater as described (subsurface pore spaces and aquifers)?
• Lag time is the time between rainfall onset and peak discharge; which factors control it?
• Which statement best defines groundwater recharge?
• Which landform forms at the river mouth as sediment is deposited, often fan-shaped?