Water Resource Overview and Demand Issues

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Questions and Answers

What is a recommended action to conserve water during domestic activities?

  • Take a short shower instead of a long bath
  • Use more water for washing sidewalks
  • Turn off water when it is not absolutely needed (correct)
  • Leave the faucet running while brushing teeth

Which method can industries adopt to reduce water usage?

  • Use older machinery that requires more water
  • Discontinue the use of surface water
  • Increase the frequency of water usage in production
  • Implement in-plant treatment and recycling of water (correct)

Which of the following is not a step suggested for efficient agricultural water management?

  • Depend solely on ground water (correct)
  • Using computer monitoring for water release
  • Using improved irrigation systems
  • Integrating surface and ground water usage

How can sustainable water use be defined?

<p>Utilizing water resources in a way that ensures future generations can continue to thrive (B)</p> Signup and view all the answers

What is a beneficial practice for maintaining community well-being related to water?

<p>Ensuring efficient use of water resources (B)</p> Signup and view all the answers

What percentage of Earth's water is fresh water?

<p>3.5% (D)</p> Signup and view all the answers

Which of the following uses the largest percentage of global water consumption?

<p>Agricultural use (B)</p> Signup and view all the answers

What is a common method to make seawater suitable for drinking?

<p>Desalination (C)</p> Signup and view all the answers

Which of the following is NOT a component of water conservation?

<p>Increasing water pollution (C)</p> Signup and view all the answers

What percentage of global water consumption is used for industrial purposes?

<p>20% (C)</p> Signup and view all the answers

What process does water undergo after being used before it can be used again?

<p>The water cycle (C)</p> Signup and view all the answers

What has been the trend in world water use during the twentieth century?

<p>Increased sevenfold (D)</p> Signup and view all the answers

What is a major challenge regarding the availability of fresh water?

<p>Limited fresh water in comparison to rising demand (D)</p> Signup and view all the answers

Flashcards

Water Conservation Steps

Methods to use water resources efficiently to avoid depletion and degradation of water resources.

Efficient Irrigation

Using improved systems for water delivery in agriculture to minimize water waste.

Sustainable Water Use

Using water resources in a way that ensures sufficient water availability for future generations without harming the environment.

Water conservation in daily life

Turning off water when not in usage while washing hands, brushing teeth, etc.

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Industrial Water Conservation

Reducing water consumption in industries by increasing water treatment and recycling, or developing new processes.

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Water scarcity

A lack of fresh water, despite the abundance of water on Earth, due to increased demand from population growth, pollution, and waste.

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Water use categories

Water is used for domestic purposes (like showering), agriculture (irrigation), industry (processing), and in-stream activities (hydropower).

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Irrigation agriculture

Using water for growing crops. It's the largest consumer of water globally.

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Fresh water

Water that is free from salts and other impurities, suitable for drinking and many other uses.

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Water conservation

Protecting water resources by using water carefully and improving water quality.

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Renewable resource

A water resource that replenishes naturally, like water from rivers and rain.

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Desalination

A process to remove salt from seawater to make it potable.

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Water demand increase

The amount of water needed has increased significantly over the past centuries, largely due to population growth, economic development, and other factors.

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Study Notes

Water Resource Overview

  • Water covers about three-quarters of Earth's surface.
  • Water is essential for all life (plants, animals, humans).
  • Water is a renewable resource that returns to the water cycle after use.
  • The total amount of water on Earth might not seem to be a problem, but fresh water is limited (3.5%).
  • Global population growth and increasing demand are causing water pollution and waste.
  • Access to fresh water where and when needed is a major issue.

Water Stress

  • A global map shows areas with high water stress.
  • Water stress is a significant issue facing many regions.

Water Use

  • Water use is diverse, encompassing domestic, agricultural, industrial, and in-stream (e.g., navigation, recreation).
  • Irrigation agriculture uses over 70% of global water, with industry accounting for an additional 20%.
  • Domestic and municipal uses comprise the remaining 10%.
  • Water use patterns vary greatly by region.

Increasing Water Demand

  • Water is a fundamental natural resource.
  • Most fresh water comes from rivers, lakes, and underground aquifers.
  • Seawater can be used after desalination.
  • Global water use has increased substantially over the past century (seven times).

Factors Driving Increased Demand

  • Rising global population is increasing demand.
  • Improved living standards often correlate with increased water usage in homes.
  • Increased irrigation for food production contributes significantly.

Water Conservation

  • Water conservation is the careful use and protection of water resources.
  • It's crucial for achieving sustainable water use.
  • Conservation practices include improved agricultural irrigation systems, integrating surface and groundwater use, minimizing water waste, and adjusting industrial and domestic practices.
  • Industries can reduce water usage through water recycling and treatment.

Sustainable Water Use

  • Water sustains life, including ecological systems.
  • Its importance extends to ecosystem support, economic development, and community well-being.
  • Sustainable water use focuses on responsibly managing water resources to avoid degradation of the hydrologic cycle and ecological systems.

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