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Year 11 Exam  >  Year 11 Tests  >  Test: Drainage Basin - Year 11 MCQ

Test: Drainage Basin - Year 11 MCQ


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10 Questions MCQ Test - Test: Drainage Basin

Test: Drainage Basin for Year 11 2024 is part of Year 11 preparation. The Test: Drainage Basin questions and answers have been prepared according to the Year 11 exam syllabus.The Test: Drainage Basin MCQs are made for Year 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Drainage Basin below.
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Test: Drainage Basin - Question 1
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How does the geological composition of a drainage basin influence its characteristics?

Detailed Solution for Test: Drainage Basin - Question 1
The geological composition of a drainage basin significantly influences its characteristics. Different types of rocks and soils present in the basin can affect how water is stored, infiltrated, and transported within the basin. For instance, areas with impermeable rock formations may experience more surface runoff, while porous rocks can allow water to percolate into the ground, affecting groundwater recharge and flow patterns.
Test: Drainage Basin - Question 2
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Why is the topography of a drainage basin an essential factor in its hydrological processes?

Detailed Solution for Test: Drainage Basin - Question 2
The topography of a drainage basin plays a crucial role in influencing the distribution of precipitation within the basin. Slopes and elevations within the basin determine the direction of surface runoff, affecting the formation of river channels and the overall flow of water. Higher elevations may receive more precipitation, leading to increased runoff and potentially influencing erosion and sediment transport within the basin.
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Test: Drainage Basin - Question 3
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How does land utilization impact the functioning of a drainage basin?

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Land utilization plays a significant role in shaping the functioning of a drainage basin. Human activities such as urbanization, agriculture, and deforestation can alter natural land cover, leading to changes in infiltration rates, runoff patterns, and overall hydrological processes. These alterations can increase the risk of flooding, erosion, and sedimentation within the basin, impacting both the ecosystem and human communities that depend on its resources.
Test: Drainage Basin - Question 4
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What is the primary purpose of a watershed in a drainage basin?
Detailed Solution for Test: Drainage Basin - Question 4
The primary function of a watershed in a drainage basin is to collect and store water. Watersheds act as natural boundaries that separate one drainage basin from another. When precipitation falls within a watershed, the water is collected and eventually flows towards a common outlet, such as a river, lake, or ocean. This process is critical for the hydrological cycle, as watersheds play a key role in capturing and storing water that sustains ecosystems and human activities.
Test: Drainage Basin - Question 5
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In a drainage basin, what is the function of a confluence?
Detailed Solution for Test: Drainage Basin - Question 5
A confluence in a drainage basin serves the function of connecting the main river channel with its tributaries. When two or more streams or rivers meet at a confluence, they merge to form a larger body of water, such as a river. This merging of flows plays a crucial role in shaping the channel network of a drainage basin and influencing the movement of water within the system.
Test: Drainage Basin - Question 6
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How does the outlet or mouth of a drainage basin impact the flow of water?
Detailed Solution for Test: Drainage Basin - Question 6
The outlet or mouth of a drainage basin plays a crucial role in regulating the discharge of water from the basin. It is the point where water exits the drainage basin and enters another water body, such as a lake, sea, or ocean. The outlet helps control the flow of water leaving the basin, influencing factors like flood control, sediment transport, and water quality downstream. Proper management of outlets is essential for maintaining the overall health and sustainability of the hydrological system.Response:
Test: Drainage Basin - Question 7
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How are drainage basins with high drainage density typically described?
Detailed Solution for Test: Drainage Basin - Question 7
Basins with high drainage density are characterized by having numerous tributaries. This abundance of tributaries leads to a denser network of water channels within the basin, contributing to efficient water drainage and distribution. It also indicates a higher potential for water-related activities and biodiversity in such areas.
Test: Drainage Basin - Question 8
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What is the significance of drainage density in understanding a basin's characteristics?
Detailed Solution for Test: Drainage Basin - Question 8
Drainage density is a crucial metric as it reflects the efficiency of water flow within a basin. Understanding the drainage density helps in assessing factors such as flood risk, erosion potential, and overall water management strategies within a given basin. Higher drainage density implies a well-connected network of water channels that can impact various environmental and human activities.
Test: Drainage Basin - Question 9
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How are basins with low drainage density typically characterized?
Detailed Solution for Test: Drainage Basin - Question 9
Basins with low drainage density are typically described as having few tributaries. This scarcity of tributaries results in a less interconnected network of water channels, which can affect the efficiency of water distribution and drainage within the basin. Low drainage density areas may experience challenges related to water availability, biodiversity, and overall ecosystem health.
Test: Drainage Basin - Question 10
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What role do tributaries play in a drainage basin's channel network?
Detailed Solution for Test: Drainage Basin - Question 10
Tributaries in a drainage basin's channel network contribute to the volume of water in the main river channel. As smaller streams or rivers that flow into a larger river, tributaries increase the total flow of water within the basin. This inflow of water from tributaries is essential for maintaining the overall hydrological balance of the drainage basin and sustaining the health of aquatic ecosystems along the river network.
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