CH 2 SUM: Geomorphology
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Questions and Answers

What type of landform is typically formed by the erosion of the outer bank and deposition on the inner bank of a river?

  • Meanders (correct)
  • Flood plains
  • Braided streams
  • Oxbow lakes

    • In which part of the river are meandering patterns most common?

  • Upper course
  • Mouth
  • Middle and lower courses (correct)
  • Source

    • What feature can be formed when a meander becomes cut off from the main channel of a river?

  • Natural levees
  • Oxbow lakes (correct)
  • Flood plains
  • Braided streams

    • What do natural levees act as, in terms of flood prevention?

    <p>Natural barriers</p> Signup and view all the answers

    When does rejuvenation of a river typically occur?

    <p>Uplift</p> Signup and view all the answers

    What term describes the process of river capture diverting headwaters from another stream?

    <p>Stream piracy</p> Signup and view all the answers

    What term refers to a reduced river flowing in a disproportionately large valley left by a captured stream?

    <p>Misfit stream</p> Signup and view all the answers

    In which type of drainage pattern does the river maintain its original course despite varying rock hardness?

    <p>Superimposed drainage</p> Signup and view all the answers

    'Fluvial geomorphology' provides insights into which aspects?

    <p>River behavior and landscape evolution</p> Signup and view all the answers

    'River grading' refers to the balance between which two processes?

    <p>'Erosion and deposition'</p> Signup and view all the answers

    What does river management involve?

    <p>Preservation of water resources within a river basin</p> Signup and view all the answers

    What is a key importance of managing drainage basins and catchment areas?

    <p>Ensuring water availability for future generations</p> Signup and view all the answers

    What is a common cause of poor river management?

    <p>Deforestation</p> Signup and view all the answers

    How do human settlements impact drainage basins?

    <p>Increased pollution and altered river flow patterns</p> Signup and view all the answers

    Which strategy is effective for managing catchment areas?

    <p>Afforestation</p> Signup and view all the answers

    What is a key component of the Working for Water program in South Africa?

    <p>Removing invasive alien plants</p> Signup and view all the answers

    How does river pollution impact biodiversity?

    <p>Leads to eutrophication and biodiversity loss</p> Signup and view all the answers

    What role do education and legislation play in effective river management?

    <p>Promoting sustainable practices</p> Signup and view all the answers

    How do human activities affect soil erosion in drainage basins?

    <p>Overgrazing leads to soil erosion, increasing sedimentation in rivers.</p> Signup and view all the answers

    Why is urban expansion mentioned as a cause of poor river management?

    <p>It contributes to the degradation of river systems.</p> Signup and view all the answers

    What is the term for the upper surface of the zone of saturation where soil or rocks are fully saturated with water?

    <p>Water Table</p> Signup and view all the answers

    Which type of river originates from humid areas but flows through arid regions?

    <p>Exotic Rivers</p> Signup and view all the answers

    What pattern of drainage features right-angled tributaries, common in folded mountain ranges?

    <p>Trellis</p> Signup and view all the answers

    What term refers to the hierarchy of streams from smallest tributaries to largest rivers based on their size and the number of tributaries?

    <p>Stream Order</p> Signup and view all the answers

    In which type of flow do we see smooth, layered movement of water?

    <p>Laminar Flow</p> Signup and view all the answers

    Which river profile shows a side view from the source to the mouth, illustrating the river's gradient or slope?

    <p>Longitudinal Profile</p> Signup and view all the answers

    What type of river flows only briefly following significant rainfall events?

    <p>Episodic Rivers</p> Signup and view all the answers

    Which drainage pattern features streams that flow towards a central point, often found in basins?

    <p>Centripetal</p> Signup and view all the answers

    What term describes water that fills the cracks and spaces in underground soil and rock layers?

    <p>Groundwater</p> Signup and view all the answers

    Which type of river flow continuously throughout the year?

    <p>Permanent Rivers</p> Signup and view all the answers

    What is another term for drainage basins?

    <p>Catchment areas</p> Signup and view all the answers

    A river system within a drainage basin refers to:

    <p>The network of rivers and streams within a drainage basin</p> Signup and view all the answers

    What is the term used for a smaller stream that feeds into a larger stream or river?

    <p>Tributary</p> Signup and view all the answers

    In a drainage basin, what is the point called where two or more streams meet?

    <p>Confluence</p> Signup and view all the answers

    What is the primary function of drainage basins in South Africa?

    <p>Water resources management</p> Signup and view all the answers

    Which geographical area collects all precipitation that flows to a single stream or set of streams?

    <p>Catchment area</p> Signup and view all the answers

    What factor influences the unique characteristics of South Africa's drainage basins?

    <p>Climate and topographical features</p> Signup and view all the answers

    What is the boundary that separates adjacent drainage basins called?

    <p>Watershed</p> Signup and view all the answers

    What does a tributary do in a drainage basin?

    <p>Feeds into a larger stream or river</p> Signup and view all the answers

    Where does all precipitation flow in a drainage basin?

    <p>To a single stream or set of streams</p> Signup and view all the answers

    What type of river in South Africa originates from humid areas but flows through arid regions?

    <p>Exotic Rivers</p> Signup and view all the answers

    Which drainage pattern is characterized by parallel streams, usually found on steep slopes?

    <p>Parallel</p> Signup and view all the answers

    What is the term for water that flows over the land's surface from rain, melting snow, or other sources?

    <p>Surface Run-off</p> Signup and view all the answers

    In which type of river flow do we see chaotic eddies and swirls, common in fast-moving or obstructed streams?

    <p>Turbulent Flow</p> Signup and view all the answers

    What is the upper land area between two rivers in the same drainage basin called?

    <p>Interfluve</p> Signup and view all the answers

    Which type of river only flows briefly following significant rainfall events?

    <p>Episodic Rivers</p> Signup and view all the answers

    What pattern of drainage resembles tree branches and is common in uniform soil and rock conditions?

    <p>Dendritic</p> Signup and view all the answers

    What is the term used for a side view of a river from the source to the mouth, illustrating its gradient or slope?

    <p>Longitudinal Profile</p> Signup and view all the answers

    Which type of river experiences right-angle turns due to jointed rocks, forming a rectangular drainage pattern?

    <p>Rectangular</p> Signup and view all the answers

    What factor significantly affects drainage density and stream order in a river system?

    <p>Precipitation</p> Signup and view all the answers

    What is the primary role of drainage basins in South Africa?

    <p>Managing water resources</p> Signup and view all the answers

    What is the term used for the area where water is collected by the natural landscape?

    <p>Catchment Area</p> Signup and view all the answers

    Which term describes the network of rivers and streams within a drainage basin?

    <p>River System</p> Signup and view all the answers

    In geomorphology, what does 'tributary' refer to?

    <p>A smaller stream that feeds into a larger stream or river</p> Signup and view all the answers

    What term describes an aerial perspective showing the path of a river?

    <p>Plan View</p> Signup and view all the answers

    What is the term for the boundary that separates adjacent drainage basins?

    <p>Watershed</p> Signup and view all the answers

    How do tributaries contribute to a river system?

    <p>By feeding into larger rivers</p> Signup and view all the answers

    In which part of the river are braided streams most commonly found?

    <p>Upper course</p> Signup and view all the answers

    What does the term 'confluence' signify in the context of rivers?

    <p>A point where two or more streams meet</p> Signup and view all the answers

    What is the term for the landforms formed from abandoned meanders that serve as evidence of the river's dynamic nature?

    <p>Oxbow Lakes</p> Signup and view all the answers

    When does rejuvenation of a river typically occur?

    <p>Due to tectonic uplift or increased water discharge</p> Signup and view all the answers

    'Drainage basin' can be best defined as:

    <p>'Catchment area' where precipitation collects</p> Signup and view all the answers

    What term describes a reduced river flowing in a disproportionately large valley left behind by the captured stream during river capture?

    <p>Misfit Stream</p> Signup and view all the answers

    'Stream ordering' is most closely related to:

    <p>'Hierarchy of streams' based on size and tributaries</p> Signup and view all the answers

    Which feature is formed by the accumulation of sediment during flood events, acting as a natural barrier against subsequent floods?

    <p>Natural Levee</p> Signup and view all the answers

    What type of drainage pattern develops when rivers cut through underlying strata maintaining their original course despite varying rock hardness?

    <p>Superimposed Drainage</p> Signup and view all the answers

    What is the primary cause of an ungraded river's imbalance?

    <p>Variations in sediment load</p> Signup and view all the answers

    What type of landform is formed by the erosion of the outer bank and deposition on the inner bank of a river?

    <p>Meander</p> Signup and view all the answers

    What is the term for a dry valley segment left by a diverted river during river capture?

    <p>Misfit Stream</p> Signup and view all the answers

    What is the primary purpose of river management?

    <p>To ensure sustainable use of rivers</p> Signup and view all the answers

    Which activity is NOT a common cause of poor river management?

    <p>Proper sewage treatment</p> Signup and view all the answers

    How does overgrazing impact rivers within drainage basins?

    <p>Increases sedimentation in rivers</p> Signup and view all the answers

    Which strategy is part of effective catchment area management?

    <p>Developing wastewater treatment plants</p> Signup and view all the answers

    What is a significant negative impact of water pollution on the economy?

    <p>Affecting water-intensive industries</p> Signup and view all the answers

    How does the Working for Water program in South Africa contribute to river management?

    <p>By focusing on invasive alien plant removal</p> Signup and view all the answers

    What role do education and legislation play in promoting sustainable river management?

    <p>Crucial roles in promoting sustainable practices</p> Signup and view all the answers

    What is one impact of human settlements on drainage basins?

    <p>Altering river flow patterns</p> Signup and view all the answers

    What does proper catchment and river management ensure for future generations?

    <p>Protection against disasters like flooding</p> Signup and view all the answers

    What term describes the land area where water fills the cracks and spaces in underground soil and rock layers?

    <p>Water Table</p> Signup and view all the answers

    Which type of river in South Africa originates from arid regions but flows through humid areas?

    <p>Exotic Rivers</p> Signup and view all the answers

    In which drainage pattern do streams radiate outward from a central point, such as a volcanic hill?

    <p>Radial</p> Signup and view all the answers

    What type of flow is characterized by chaotic eddies and swirls, common in fast-moving or obstructed streams?

    <p>Turbulent Flow</p> Signup and view all the answers

    What type of river only flows briefly following significant rainfall events?

    <p>Episodic Rivers</p> Signup and view all the answers

    Which drainage pattern features parallel streams, usually found on steep slopes?

    <p>Parallel</p> Signup and view all the answers

    What factor significantly affects stream order in a river system?

    <p>Precipitation</p> Signup and view all the answers

    Which type of river flows only during certain seasons, typically in response to rainfall?

    <p>Periodic Rivers</p> Signup and view all the answers

    What does river management aim to achieve?

    <p>Maintain ecological balance and sustainable use of water resources</p> Signup and view all the answers

    How does urban expansion negatively impact river systems?

    <p>It leads to the degradation of river systems</p> Signup and view all the answers

    What is a common cause of poor river management according to the text?

    <p>Unregulated industrial discharge</p> Signup and view all the answers

    How do human settlements contribute to river problems within drainage basins?

    <p>They contribute to increased pollution and altered river flow patterns</p> Signup and view all the answers

    What role do education and legislation play in promoting sustainable river management?

    <p>They contribute significantly to promoting sustainable practices</p> Signup and view all the answers

    Why is the removal of invasive alien plants important in South African river management?

    <p>To enhance water conservation and restore natural flow in rivers</p> Signup and view all the answers

    How does sustainable river management impact the economy?

    <p>It boosts the economy by ensuring water availability for various sectors</p> Signup and view all the answers

    What activities are recommended for better river management according to the text?

    <p>Identifying main pollution sources and promoting afforestation</p> Signup and view all the answers

    Which factor significantly affects drainage density and stream order in a river system?

    <p>Human activities</p> Signup and view all the answers

    What is the impact of human activities on soil erosion within drainage basins?

    <p>Increased soil erosion leading to greater sedimentation in rivers</p> Signup and view all the answers

    What landform is typically formed when a river's erosive power increases due to factors like uplift, sea-level fall, or increased water discharge?

    <p>Knickpoints</p> Signup and view all the answers

    In which part of a river are oxbow lakes most likely to be found?

    <p>Middle course</p> Signup and view all the answers

    What is the primary characteristic of an ungraded river?

    <p>Exhibits imbalances</p> Signup and view all the answers

    What term describes a dry valley segment left behind by a diverted river?

    <p>Wind gap</p> Signup and view all the answers

    Which drainage pattern commonly occurs in uniform soil and rock conditions resembling tree branches?

    <p>Dendritic drainage pattern</p> Signup and view all the answers

    What feature is formed by the erosion of the outer bank and deposition on the inner bank of a river?

    <p>Meanders</p> Signup and view all the answers

    When does river rejuvenation typically occur?

    <p>Due to increased water discharge</p> Signup and view all the answers

    What is the primary characteristic of a braided stream?

    <p>High sediment load and fluctuating water volumes</p> Signup and view all the answers

    What is the primary function of a drainage basin in South Africa?

    <p>To collect precipitation and drain it into a common outlet</p> Signup and view all the answers

    What is the main role of a tributary in a river system?

    <p>To feed into a larger stream or river</p> Signup and view all the answers

    Which feature evolves over time and can lead to the formation of oxbow lakes when a river's path changes?

    <p>Meanders</p> Signup and view all the answers

    What is the term for flat areas adjacent to rivers that are subject to periodic flooding?

    <p>Flood plains</p> Signup and view all the answers

    What term refers to the boundary separating adjacent drainage basins?

    <p>Watershed</p> Signup and view all the answers

    How do confluences contribute to river systems?

    <p>By forming deltas at their meeting points</p> Signup and view all the answers

    In terms of drainage basins, what is the significance of a river grading properly?

    <p>It balances erosion and deposition processes</p> Signup and view all the answers

    Why are tributaries important in maintaining the health of river systems?

    <p>To provide additional water and nutrients to main rivers</p> Signup and view all the answers

    What is the role of a catchment area in relation to drainage basins?

    <p>To collect water through natural landscapes</p> Signup and view all the answers

    How does a watershed impact the flow of water in a river system?

    <p>By separating water flow into different drainage basins</p> Signup and view all the answers

    What does a river system refer to in the context of drainage basins?

    <p>The network of rivers within a drainage basin</p> Signup and view all the answers

    What is the significance of confluences in relation to drainage patterns?

    <p>They influence where rivers deposit sediments</p> Signup and view all the answers

    What type of river in South Africa originates from arid regions but flows through humid areas?

    <p>Exotic Rivers</p> Signup and view all the answers

    What is the term for the hierarchy of streams from the smallest tributaries to the largest rivers based on their size and the number of tributaries?

    <p>Stream Order</p> Signup and view all the answers

    In which part of the river are braided streams most commonly found?

    <p>Upper Course</p> Signup and view all the answers

    What term describes a dry valley segment left behind by a diverted river?

    <p>Dry Valley</p> Signup and view all the answers

    What pattern of drainage features right-angled tributaries, common in folded mountain ranges?

    <p>Rectangular</p> Signup and view all the answers

    'Stream ordering' is most closely related to:

    <p>Fluvial Processes</p> Signup and view all the answers

    'River grading' refers to the balance between which two processes?

    <p>Erosion and Deposition</p> Signup and view all the answers

    'River rejuvenation' typically occurs when:

    <p>After glaciation impacts subside</p> Signup and view all the answers

    'Laminar Flow' refers to:

    <p>'Smooth, layered flow of water'</p> Signup and view all the answers

    What is the term for a smaller stream that feeds into a larger stream or river?

    <p>Tributary</p> Signup and view all the answers

    What term describes a river system that maintains its original course despite varying rock hardness?

    <p>Antecedent drainage</p> Signup and view all the answers

    A graded river has achieved a state of equilibrium in which the landscape has been shaped to minimize energy expenditure. What characterizes an ungraded river?

    <p>Exhibit of imbalances</p> Signup and view all the answers

    In fluvial geomorphology, what occurs when a river diverts the headwaters of another river or stream segment?

    <p>Stream piracy</p> Signup and view all the answers

    Which feature serves as evidence of abandoned meanders and the dynamic nature of rivers?

    <p>Oxbow lakes</p> Signup and view all the answers

    What is the term for a dry valley segment left by a diverted river during river capture?

    <p>Wind gap</p> Signup and view all the answers

    What do natural levees act as during flood events?

    <p>Flood barriers</p> Signup and view all the answers

    'Stream ordering' in river systems is most closely related to which aspect?

    <p>Drainage patterns</p> Signup and view all the answers

    'River grading' refers to the balance between which two processes?

    <p>Erosion and deposition</p> Signup and view all the answers

    'Rejuvenation' of a river typically occurs due to which factor?

    <p>Tectonic uplift</p> Signup and view all the answers

    What feature is characterized by multiple interweaving channels separated by bars or islands of sediment?

    <p>Braided streams</p> Signup and view all the answers

    What term refers to the boundary separating adjacent drainage basins?

    <p>Watershed</p> Signup and view all the answers

    In a drainage basin, what is the primary function of a tributary?

    <p>To feed into a larger stream or river</p> Signup and view all the answers

    What does 'stream ordering' primarily relate to in a river system?

    <p>Establishing stream hierarchy</p> Signup and view all the answers

    Which type of landform is typically formed by the erosion of the outer bank and deposition on the inner bank of a river?

    <p>Point Bar</p> Signup and view all the answers

    What factor significantly affects stream order in a river system?

    <p>Flow Path Length</p> Signup and view all the answers

    Which factor influences the unique characteristics of South Africa's drainage basins?

    <p>Topographical Features</p> Signup and view all the answers

    What is the main role of 'River Grading' in river systems?

    <p>Balancing erosion and deposition processes</p> Signup and view all the answers

    Why is the removal of invasive alien plants crucial in South African river management?

    <p>To reduce flooding risks</p> Signup and view all the answers

    What landform evolves over time and can lead to the formation of oxbow lakes due to changes in a river's path?

    <p>Meander</p> Signup and view all the answers

    What type of river flow is primarily influenced by seasonal rainfall patterns in South Africa?

    <p>Ephemeral River</p> Signup and view all the answers

    What is the primary focus of river management according to the text?

    <p>Strategic planning and development of water resources</p> Signup and view all the answers

    Which activity is NOT listed as a strategy for managing catchment areas?

    <p>Unregulated industrial discharge</p> Signup and view all the answers

    How does deforestation impact river systems according to the text?

    <p>Reduces the land's ability to absorb water</p> Signup and view all the answers

    What is a primary driver of river pollution discussed in the text?

    <p>Agricultural runoff</p> Signup and view all the answers

    How does the Working for Water program in South Africa contribute to river management?

    <p>Enhancing water conservation by removing invasive alien plants</p> Signup and view all the answers

    What is the impact of urban expansion without proper planning on river systems?

    <p>Increased degradation</p> Signup and view all the answers

    How do activities like overgrazing affect river systems within drainage basins?

    <p>Lead to soil erosion and increased sedimentation in rivers</p> Signup and view all the answers

    What role do education and legislation play in river management according to the text?

    <p>Promote environmental awareness and enforce regulations</p> Signup and view all the answers

    What is the significance of managing catchment areas for regions with limited water resources like South Africa?

    <p>Ensuring availability of water for future generations and supporting agriculture</p> Signup and view all the answers

    What is an example of poor river management according to the text?

    <p>Conducting unregulated industrial discharge</p> Signup and view all the answers

    What type of river in South Africa originates from humid areas but flows through arid regions?

    <p>Exotic Rivers</p> Signup and view all the answers

    Which drainage pattern is characterized by chaotic and disorganized flow, often resulting from glaciation?

    <p>Deranged</p> Signup and view all the answers

    What is the primary factor influencing drainage density and stream order in a river system?

    <p>Topography</p> Signup and view all the answers

    In fluvial geomorphology, what type of profile would you expect to observe in the upper course of a river?

    <p>V-shaped profile</p> Signup and view all the answers

    What type of river flow is primarily influenced by certain seasons, typically responding to rainfall events?

    <p>Periodic Rivers</p> Signup and view all the answers

    Which drainage pattern features right-angle tributaries and is commonly found in folded mountain ranges?

    <p>Trellis</p> Signup and view all the answers

    What type of flow is characterized by smooth, layered movement of water?

    <p>Laminar Flow</p> Signup and view all the answers

    Which management strategy is crucial for sustaining South Africa's drainage basins?

    <p><strong>Pollution prevention</strong></p> Signup and view all the answers

    What type of river has achieved a state of equilibrium where landscape shaping minimizes energy expenditure?

    <p>Ungraded River</p> Signup and view all the answers

    Which factor significantly affects stream order in a river system?

    <p>Precipitation</p> Signup and view all the answers

    What term describes the network of rivers and streams within a drainage basin?

    <p>River System</p> Signup and view all the answers

    In the context of drainage basins, what is the primary function of a watershed?

    <p>To separate adjacent drainage basins</p> Signup and view all the answers

    What does 'stream ordering' in geomorphology refer to?

    <p>Ranking streams by size and tributary number</p> Signup and view all the answers

    What factor significantly influences the pattern of stream order in a river system?

    <p>Sediment load</p> Signup and view all the answers

    Which of the following features is typically formed by chaotic eddies and swirls in fast-moving or obstructed streams?

    <p>'Laminar Flow'</p> Signup and view all the answers

    What type of landform is created by the accumulation of sediment acting as a natural barrier during flood events?

    <p>'Natural Levee'</p> Signup and view all the answers

    'River grading' refers to the balance between which two processes?

    <p>'Erosion' and 'Deposition'</p> Signup and view all the answers

    'Rejuvenation' of a river typically occurs due to which factor?

    <p>'Tectonic Uplift'</p> Signup and view all the answers

    'Catchment Area' is most closely related to which other term in drainage basins?

    <p>'Tributary'</p> Signup and view all the answers

    'Tributaries' in a river system are best described as:

    <p>'Small Streams Feeding Larger Ones'</p> Signup and view all the answers

    Why is the removal of invasive alien plants important in South African river management?

    <p>To enhance water conservation and restore natural flow in rivers</p> Signup and view all the answers

    What is the primary role of the Working for Water program in South Africa?

    <p>Creating jobs and improving water quality</p> Signup and view all the answers

    How do buffer zones contribute to better river management?

    <p>By addressing runoff from settlements and cultivated lands</p> Signup and view all the answers

    What is the impact of overgrazing on river systems?

    <p>Leads to soil erosion and increases sedimentation in rivers</p> Signup and view all the answers

    How do human settlements affect river flow patterns within drainage basins?

    <p>By contributing to increased pollution and altering river flow patterns</p> Signup and view all the answers

    What key factor contributes to poor river management?

    <p>Improper agricultural practices, sewage treatment, and industrial discharge</p> Signup and view all the answers

    What does effective management of catchment areas ensure?

    <p>Preservation of natural habitats and prevention of disasters like flooding</p> Signup and view all the answers

    Why is education essential in promoting sustainable river management?

    <p>To promote sustainable practices and awareness among communities</p> Signup and view all the answers

    What impact does runoff from settlements have on rivers?

    <p>Increases pollution levels and alters river flow patterns</p> Signup and view all the answers

    What is the significance of afforestation in river management?

    <p>Promotes water conservation and sustainable agricultural practices</p> Signup and view all the answers

    What is the term for the point where a captor stream diverts the flow of the captured stream?

    <p>Elbow of Capture</p> Signup and view all the answers

    What type of landform is typically formed by the erosion of the outer bank and deposition on the inner bank of a river?

    <p>Meander</p> Signup and view all the answers

    In river systems, which pattern of drainage develops when rivers cut through underlying strata maintaining their original course despite varying rock hardness?

    <p>Superimposed Drainage</p> Signup and view all the answers

    What is the term for a dry valley segment left behind by a diverted river in the process of river capture?

    <p>Wind Gap</p> Signup and view all the answers

    When rivers establish their courses before tectonic uplift and continue to flow across rising terrain, cutting through it rather than being diverted, what type of drainage pattern is observed?

    <p>Antecedent Drainage</p> Signup and view all the answers

    What is the term for the hierarchy of streams based on size and tributaries in a river system?

    <p>River Ordering</p> Signup and view all the answers

    What is the term for the flat areas adjacent to rivers subject to periodic flooding?

    <p>Flood Plains</p> Signup and view all the answers

    In a river system, what feature can be formed when a meander becomes separated from the main channel?

    <p>Oxbow Lake</p> Signup and view all the answers

    What is the term for raised banks along rivers formed by sediment accumulation during flood events?

    <p>Natural Levee</p> Signup and view all the answers

    What term refers to crescent-shaped lakes formed from abandoned meanders in a river system?

    <p>Oxbow Lake</p> Signup and view all the answers

    What is one of the consequences of inadequate sewage treatment on river systems?

    <p>Altered water flow</p> Signup and view all the answers

    Which human activity contributes significantly to soil erosion and increased sedimentation in rivers?

    <p>Overgrazing</p> Signup and view all the answers

    What is one of the main strategies mentioned for managing catchment areas effectively?

    <p>Implementing pollution control</p> Signup and view all the answers

    How does urban expansion without proper planning impact river systems?

    <p>Leads to habitat destruction</p> Signup and view all the answers

    What is the primary focus of the Working for Water program in South Africa?

    <p>Removing invasive alien plants</p> Signup and view all the answers

    Which factor significantly impacts the economy due to water pollution according to the text?

    <p>Affecting industries</p> Signup and view all the answers

    What is one of the impacts of overgrazing on rivers within drainage basins?

    <p>More sedimentation</p> Signup and view all the answers

    How do buffer zones contribute to better river management?

    <p>Reduce sedimentation</p> Signup and view all the answers

    What is the primary purpose of river management?

    <p>To ensure sustainable use of water resources</p> Signup and view all the answers

    What factor contributes to increased pollution and altered river flow patterns in river systems?

    <p>Deforestation</p> Signup and view all the answers

    How does urban expansion without proper planning impact river systems?

    <p>Increases pollution levels</p> Signup and view all the answers

    Which activity is part of the strategies for effective catchment management?

    <p>Developing infrastructure like wastewater treatment plants</p> Signup and view all the answers

    Why is the removal of invasive alien plants important in South African river management?

    <p>To enhance water conservation and restore natural flow in rivers</p> Signup and view all the answers

    How can overgrazing impact rivers within drainage basins?

    <p>Increase sedimentation in rivers</p> Signup and view all the answers

    What is the negative impact of water pollution on the economy?

    <p>Affects agriculture, tourism, and water-intensive industries</p> Signup and view all the answers

    In South Africa, what key approach does the Working for Water program focus on?

    <p>Removing invasive alien plants</p> Signup and view all the answers

    How can education and legislation contribute to effective river management according to the text?

    <p>By playing crucial roles in promoting sustainable practices</p> Signup and view all the answers

    What is the significance of creating buffer zones along settlements and cultivated lands in river management?

    <p>To prevent disasters like flooding</p> Signup and view all the answers

    What is a key characteristic of the Working for Water program in South Africa?

    <p>Removing invasive alien plants</p> Signup and view all the answers

    How does deforestation impact rivers within drainage basins?

    <p>Increases sedimentation in rivers</p> Signup and view all the answers

    What is the primary effect of overgrazing on river systems within drainage basins?

    <p>Raises soil erosion and sedimentation levels</p> Signup and view all the answers

    What is a significant consequence of urban expansion without proper planning on river systems?

    <p>Degradation of river systems</p> Signup and view all the answers

    How does the strategy of afforestation contribute to effective catchment management?

    <p>Increases the land's water absorption capacity</p> Signup and view all the answers

    What is the primary objective of river management with respect to human activities?

    <p>To mitigate the impacts of human activities on rivers</p> Signup and view all the answers

    What is a common outcome of poor river management caused by unregulated industrial discharge?

    <p>'Pollution, altered water flow, and habitat destruction'</p> Signup and view all the answers

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