About This Chapter
Earth's Freshwater Resources - Chapter Summary
Earth is filled with a wide variety of freshwater resources. Ensure you know those resources, their functions and some challenges involved in maintaining those resources by reviewing this short chapter. Lessons offer comprehensive descriptions and examples to strengthen your understanding. Once you've completed this chapter, you will be ready to:
- Define Karst topography, and explain the process of the water cycle
- Describe the cycles of matter and properties of water
- Identify activities that affect the water supply and create water resource issues
- Discuss aquifer depletion and the overdrawing of surface waters
- Share ways that water conservation and management can lead to sustainable use
- Provide pros and cons of dams and reservoirs
- List types and sources of water pollution
- Explain how to improve water quality, and discuss the Clean Water Act and Safe Drinking Water Act
The lessons in this chapter are available as videos and texts. If reviewing videos, take advantage of clickable timelines that enable you to skip to key topics without watching lessons in full. All lessons are short, ensuring you're able to fit your study of Earth's freshwater resources into the busiest of schedules. Once you've examined a lesson, if you have a question about a topic covered, don't hesitate to submit it to our experts. At any time, feel free to assess your knowledge of lesson topics by taking short quizzes and a chapter exam.
1. Karst Topography: Definition & Features
There are many types of landscapes on Earth. One important one is called karst topography, and in this lesson we'll take a look at what it is, its common features, and its influence on freshwater resources.
2. The Water Cycle: Precipitation, Condensation, and Evaporation
This lesson discusses the processes water takes as it moves around the Earth in the water cycle. You'll get an in-depth look at condensation, precipitation, and evaporation.
3. Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle
Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and nitrogen fixation allow the carbon and nitrogen cycles to regenerate needed substances by recycling Earth's atoms.
4. What Are the Properties of Water? - Unique Properties that Support Life on Earth
In this video lesson you will learn about water and its unique properties. You will also develop an understanding of how these properties make life as we know it possible.
5. Water Resource Issues: Activities Affecting the Water Supply
This video lesson describes water resources issues such as aquifer depletion, overdrawing surface waters and salinization of irrigated soil. You will also learn about the impacts of activities affecting water resources.
6. Aquifer Depletion and Overdrawing of Surface Waters: Effects on Water Resources
This video lesson describes the effects of overuse on two major water resources in the U.S.: the depletion of the Ogallala Aquifer and the overdrawing of the Colorado River.
7. Water Conservation: How Water Management Can Lead to Sustainable Use
In this video lesson you will learn about the importance of water conservation. You will also learn about the two ways freshwater is used, and how proper water use can lead to sustainability in agriculture, homes, and manufacturing.
8. Water Storage: The Pros and Cons of Dams & Reservoirs
In this lesson, you will contrast the benefits and drawback of water storage. You will learn about how and why water is stored and how this affects the surrounding ecosystems and human communities.
9. Water Pollution: Definition, Types, and Sources
In this lesson, you will learn about the different types and sources of water pollution. You will gain an understanding of both surface water and groundwater pollution and the similarities and differences between them.
10. Water Treatment: Improving Water Quality
In this lesson, you will learn how water is purified for drinking, and how wastewater is treated before being put back into the environment. You will also learn about water purification issues in developing countries.
11. The Clean Water Act & Safe Drinking Water Act: Legislation for Clean Water
In this lesson, you will learn about the Clean Water Act of 1972 and the Safe Drinking Water Act of 1974. You'll discover how both laws help keep our waters free of pollution and safe for everyday use.
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Other chapters within the Virginia SOL - Earth Science: Test Prep & Practice course
- Measurements in Earth Science
- Conducting Earth Science Experiments
- Scientific Reasoning & Logic
- Characteristics of Earth & the Solar System
- Space Exploration
- Earth's Natural Resources
- Intro to Rocks, Minerals & Soil
- Basics of Plate Tectonics
- Fossils & Geologic Time
- Ocean & Coastal Processes
- Evolution of the Atmosphere
- Climate, Weather & Energy Transferring
- Origin & Evolution of the Universe
- Virginia SOL - Earth Science Flashcards