The Lower Course Of A River

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| By MrCJDean
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MrCJDean
Community Contributor
Quizzes Created: 4 | Total Attempts: 2,200
Questions: 17 | Attempts: 95

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The Lower Course Of A River - Quiz


Questions and Answers
  • 1. 

    In the lower course of a river it has a low volume.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    'Volume' means 'amount' here. So this question is asking if rivers at their mouths have a lot or a little water.

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  • 2. 

    As a river reaches the end of its journey, energy levels are low.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    As a river reaches the end of its journey, it has been flowing for a long distance and has encountered various obstacles and terrain changes along the way. This continuous flow and interaction with the environment cause the river's energy levels to gradually decrease. Additionally, as the river approaches its end, it may encounter flatter terrain and lower gradients, further contributing to the decrease in energy levels. Therefore, it is true that as a river reaches the end of its journey, energy levels are low.

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  • 3. 

    A ___________ is the area around a river that is covered in times of flood.

    Correct Answer
    floodplain
    Explanation
    A floodplain is the area around a river that is covered in times of flood. It is a flat or gently sloping stretch of land adjacent to a river that is prone to flooding. When the river overflows its banks, the excess water spreads out onto the floodplain, causing the area to be submerged. The floodplain acts as a natural buffer, absorbing and storing floodwaters, which helps to reduce the impact of flooding on nearby communities and infrastructure.

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  • 4. 

    What is the name for the sediment deposited by rivers?

    • A.

      Levees

    • B.

      Alluvium

    • C.

      Cuspate

    • D.

      Deltas

    Correct Answer
    B. Alluvium
    Explanation
    Alluvium is the correct answer because it refers to the sediment that is deposited by rivers. It consists of a mixture of sand, silt, clay, and other organic materials that are carried by the river and then settle on the riverbed or floodplain. Alluvium plays a crucial role in shaping the landscape and providing fertile soil for agriculture.

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  • 5. 

    The alluvium deposits are very fertile, making the mouth of the river a good place for

    • A.

      Agriculture

    • B.

      Roads

    • C.

      Fishing

    • D.

      Building

    Correct Answer
    A. Agriculture
    Explanation
    The alluvium deposits, which are sediments deposited by the river, are known to be very fertile. This means that the soil in the area around the mouth of the river is rich in nutrients and ideal for growing crops. Therefore, agriculture would be a good economic activity to pursue in this location.

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  • 6. 

    A build up of alluvium on the banks of a river can create ____________, which raise the river bank. 

    Correct Answer
    levees
    Explanation
    A build up of alluvium on the banks of a river can create levees, which are natural embankments that form along the sides of a river. These levees are formed when sediment and debris carried by the river are deposited on the banks, gradually raising the level of the river bed. Over time, this accumulation of sediment creates raised banks that help contain the river within its channel during periods of high water flow, reducing the risk of flooding in the surrounding areas.

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  • 7. 

    A __________ is formed when the river deposits its material faster than the sea can remove it.

    Correct Answer
    delta
    Explanation
    A delta is formed when a river deposits its material faster than the sea can remove it. This occurs when the river carries a large amount of sediment, such as sand, silt, and clay, and the energy of the river decreases as it enters the sea. As a result, the sediment is dropped and accumulates, forming a triangular or fan-shaped landform known as a delta. Deltas are often found at the mouths of rivers and are characterized by their rich soil and diverse ecosystems.

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  • 8. 

    Any moisture that falls from the sky e.g. rain or snow is called _______

    Correct Answer
    precipitation
    Explanation
    Precipitation refers to any form of water that falls from the atmosphere to the Earth's surface, such as rain, snow, sleet, or hail. It is a natural process that occurs when the water vapor in the atmosphere condenses and becomes too heavy to remain suspended, resulting in it falling to the ground. Precipitation is an essential part of the Earth's water cycle and plays a crucial role in maintaining the planet's ecosystems and providing water resources for various purposes.

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  • 9. 

    The start of the river, normally found in mountainous areas is called the _______

    Correct Answer
    source
    Explanation
    The start of a river, typically located in mountainous regions, is referred to as the "source." This is where the river originates, usually from a spring, and begins its journey downstream. The source is the point where the river is born and begins to gather water, eventually forming a larger body of water as it flows. It is an essential term in geography and hydrology to describe the starting point of a river.

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  • 10. 

    The ________ is the end of the river, this is normally where a river enters the sea, but it can be where it enters a lake.

    Correct Answer
    mouth
    Explanation
    The term "mouth" refers to the end point of a river where it meets a larger body of water, such as the sea or a lake. This is the final destination of the river's flow and is typically characterized by a wider and deeper channel. The mouth is an important feature as it marks the transition from the river's freshwater environment to the saltwater or freshwater environment of the sea or lake.

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  • 11. 

    The ___________ is where two rivers meet.

    Correct Answer
    confluence
    Explanation
    The word "confluence" refers to the point where two rivers meet. It is commonly used to describe the merging of two separate streams of water into one. In this context, "confluence" accurately describes the location where two rivers come together.

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  • 12. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    A. Arcuate
  • 13. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    B. Bird's foot
    Explanation
    The correct answer is "bird's foot." This type of delta is characterized by multiple distributary channels that resemble the shape of a bird's foot. These distributaries spread out in a fan-like pattern, creating a complex network of channels and islands. This type of delta is commonly found in areas with high sediment loads and strong tidal currents.

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  • 14. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    C. Cuspate
  • 15. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    B. Bird's foot
    Explanation
    The given question is asking for the type of delta being referred to. The correct answer is "bird's foot." A bird's foot delta is a type of delta that resembles the shape of a bird's foot, with multiple distributaries branching out from a central point. This type of delta is commonly found in areas with strong tidal currents and a high sediment load, such as the Mississippi River delta.

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  • 16. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    A. Arcuate
  • 17. 

    Which type of delta is this?

    • A.

      Arcuate

    • B.

      Bird's foot

    • C.

      Cuspate

    • D.

      Option 4

    Correct Answer
    C. Cuspate

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  • Current Version
  • Jun 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 26, 2015
    Quiz Created by
    MrCJDean
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