10 Questions
What percentage of the world's total water volume is estimated to exist as freshwater?
2.5%
Where is nearly 70% of the freshwater found?
Ice sheets and glaciers
What is the main source of obtaining freshwater mentioned in the text?
Surface run off and ground water
What proportion of the earth's surface is covered with water?
Three-fourth
Why is it predicted that nearly two billion people will live in absolute water scarcity by 2025?
Inadequate water renewal processes
What is the hydrological cycle and how does it ensure that water is a renewable resource?
The hydrological cycle is the continuous movement of water from the earth's surface to the atmosphere and back. It ensures that water is a renewable resource by constantly renewing and recharging surface water and groundwater.
Explain why despite water being a renewable resource, countries and regions around the globe suffer from water scarcity.
Despite water being a renewable resource, water scarcity occurs due to uneven distribution, pollution, over-extraction, and inadequate infrastructure for water storage and distribution.
What percentage of the world's total water volume is estimated to exist as freshwater, and where is nearly 70% of this freshwater found?
2.5% of the world's total water volume is estimated to exist as freshwater. Nearly 70% of this freshwater occurs as ice sheets and glaciers in Antarctica, Greenland, and the mountainous regions of the world.
What are the main sources of obtaining freshwater mentioned in the text, and how are they related to the hydrological cycle?
The main sources of obtaining freshwater mentioned in the text are surface run off and groundwater. They are related to the hydrological cycle as they are continually being renewed and recharged through the hydrological cycle.
What is the predicted scenario regarding the number of people living in absolute water scarcity by 2025, and what factors contribute to this prediction?
It is predicted that by 2025, nearly two billion people will live in absolute water scarcity. Factors contributing to this prediction include population growth, climate change, and inefficient water management.
Study Notes
Water Resources
- Only 2.5% of the world's total water volume is estimated to exist as freshwater.
- Nearly 70% of this freshwater is found in the form of ice caps, glaciers, and permanent snow.
Hydrological Cycle
- The hydrological cycle ensures that water is a renewable resource through the continuous process of evaporation, condensation, and precipitation.
- This cycle allows water to be continuously cycled back into the environment, making it a renewable resource.
Water Scarcity
- Despite water being a renewable resource, countries and regions around the globe suffer from water scarcity due to factors such as:
- Uneven distribution of freshwater resources
- Increasing population growth and urbanization
- Climate change affecting precipitation patterns
- Inefficient use and management of water resources
Predicted Water Scarcity Scenario
- By 2025, it is predicted that nearly two billion people will live in absolute water scarcity.
- Factors contributing to this prediction include:
- Population growth and urbanization
- Climate change
- Inefficient use and management of water resources
Obtaining Freshwater
- The main source of obtaining freshwater is through the hydrological cycle, which involves precipitation and runoff.
- Other sources of obtaining freshwater mentioned in the text include:
- Ice caps
- Glaciers
- Permanent snow
Water Coverage on Earth
- Approximately 71% of the earth's surface is covered with water.
Test your knowledge of the Earth's freshwater resources with this quiz! Explore the hydrological cycle, surface runoff, groundwater, and the renewability of freshwater. Gain a deeper understanding of the importance of water conservation and sustainability.
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