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Water, Water Everywhere
https://www.youtube.com/watch?v=XBkj2JASmW4&feature=youtube_gdata

NASA

This is a short NASA video on the water cycle. The video shows the importance of the water cycle to nearly every natural process on Earth and illustrates how tightly coupled the water cycle is to climate.

Video length: 6:31

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Climate Literacy
About Teaching Climate Literacy

Sunlight reaching the Earth can heat the land, ocean, and atmosphere. Some of that sunlight is reflected back to space by the surface, clouds, or ice. Much of the sunlight that reaches Earth is absorbed and warms the planet.
About Teaching Principle 1
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Covering 70% of Earth's surface, the ocean exerts a major control on climate by dominating Earth's energy and water cycles. It has the capacity to absorb large amounts of solar energy. Heat and water vapor are redistributed globally through density-driven ocean currents and atmospheric circulation. Changes in ocean circulation caused by tectonic movements or large influxes of fresh water from melting polar ice can lead to significant and even abrupt changes in climate, both locally and on global scales.
About Teaching Principle 2
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The abundance of greenhouse gases in the atmosphere is controlled by biogeochemical cycles that continually move these components between their ocean, land, life, and atmosphere reservoirs. The abundance of carbon in the atmosphere is reduced through seafloor accumulation of marine sediments and accumulation of plant biomass and is increased through deforestation and the burning of fossil fuels as well as through other processes.
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Benchmarks for Science Literacy
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Thermal energy carried by ocean currents has a strong influence on climates around the world. Areas near oceans tend to have more moderate temperatures than they would if they were farther inland but at the same latitude because water in the oceans can hold a large amount of thermal energy.
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Transfer of thermal energy between the atmosphere and the land or oceans produces temperature gradients in the atmosphere and the oceans. Regions at different temperatures rise or sink or mix, resulting in winds and ocean currents. These winds and ocean currents, which are also affected by the earth's rotation and the shape of the land, carry thermal energy from warm to cool areas.
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Notes From Our Reviewers The CLEAN collection is hand-picked and rigorously reviewed for scientific accuracy and classroom effectiveness. Read what our review team had to say about this resource below or learn more about how CLEAN reviews teaching materials
Teaching Tips | Science | Pedagogy | Technical Details

Teaching Tips

  • Can be used as general overview or review of the water cycle.
  • Educators may wish to provide students a question sheet to keep student interest or ensure the video is watched all the way through.
  • Although this video does not directly articulate that water is a short-lived greenhouse gas, this is an excellent description of how one of the greenhouse gases (water vapor) impacts climate.

About the Science

  • Very basic overview of how the sun drives the water cycle and the interdependence between the water cycle and the climate system.
  • Emphasis on water in the atmosphere and how ocean currents transfer heat from the topics to higher latitudes.
  • Features interviews with several NASA scientists who study water and climate dynamics.
  • Comment from expert scientist: This video is accurate and explains the water cycle effectively and clearly. It traces the cycle in a linear fashion and marshals data, figures, and expert interviews to support its claims.

About the Pedagogy

  • One can use this video to review or introduce water-related activities, focusing on evaporation and water in the atmosphere.
  • The video uses a variety of images, diagrams, and data products to drive home how the water cycle and climate are impacted by changes in one or both processes.

Technical Details/Ease of Use

  • Well-produced and easy-to-use introductory video.

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