Hydrograph Quiz

What is a hydrograph?

• A graph showing the rate of flow versus time past a specific point in a river, channel, or conduit.

• A type of plant that grows in water

• A type of rock found in rivers

• A type of graph used to measure earthquakes

Explain the components of a hydrograph.

• The ocean, mountains, and forests

• The moon, stars, and sun

• The rising limb, peak discharge, falling limb, and base flow.

• The alphabet, numbers, and colors

What are the factors that affect the shape of a hydrograph?

• Temperature and humidity

• Wind speed and direction

• Precipitation intensity, duration, distribution, land use and land cover, soil type and moisture, topography, and human activities

• Distance from the equator

Describe the difference between a rising limb and a falling limb in a hydrograph.

• The rising limb shows the maximum river discharge, while the falling limb shows the minimum river discharge.

• The rising limb shows the increase in river discharge, while the falling limb shows the decrease in river discharge.

• The rising limb shows the calm water level, while the falling limb shows the turbulent water level.

• The rising limb shows the decrease in river discharge, while the falling limb shows the increase in river discharge.

How does urbanization impact hydrographs?

• Urbanization has a minimal effect on hydrographs

• Urbanization reduces surface runoff and increases infiltration

• Urbanization has no impact on hydrographs

• Urbanization can lead to increased surface runoff and reduced infiltration, resulting in higher peak flows and faster rise times in hydrographs.

What is the significance of baseflow in a hydrograph?

• It has no impact on the flow of a river or stream

• It is only relevant during periods of heavy rainfall

• It represents the sustained flow of a river or stream derived from groundwater sources.

• It is the result of surface runoff from precipitation

Explain the concept of lag time in a hydrograph.

• The time it takes for a dam to reach its maximum capacity after heavy rainfall.

• The time it takes for a river to dry up after heavy rainfall.

• The time it takes for rainfall to reach the peak discharge in a river or stream.

• The time it takes for groundwater to absorb excess rainfall.

What are the different types of hydrographs?

• Infiltration hydrograph and Evaporation hydrograph

• Peak hydrograph and Trough hydrograph

• Rising limb hydrograph and Recession limb hydrograph

• Upstream hydrograph and Downstream hydrograph

Discuss the effects of deforestation on hydrographs.

• Increased evaporation and reduced precipitation

• No impact on surface runoff or infiltration

• Increased surface runoff and reduced infiltration

• Decreased surface runoff and increased infiltration

How does soil type influence hydrographs?

• Soil type only affects the color of the water in hydrographs

• Soil type has no impact on hydrographs

• Soil type influences the temperature of the water in hydrographs

• Soil type affects the rate of water infiltration and ultimately influences the shape and timing of hydrographs.