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Fresh water resources- their quantity, location and distribution- are briefly discussed in this two-page article. The article can be used as a "reading to be informed" activity in a stand-alone fashion or can be incorporated into a lesson plan.
This activity demonstrates optical properties of water: that different constituents in water affect the transmission, absorption, and scattering of different colors in the visible light spectrum. Inexpensive, off-the-shelf components are used to... (View More) build a light sensor and source, creating a simple spectrophotometer that can measure light absorption. In the second part of this activity, principles of ocean color remote sensing are applied to measure reflectance. Using components that are clearly visible allows students to configure them in different ways. Playing with the instrument design gives students a practical understanding of spectrophotometers, in-water optics, and remote sensing. As an extension of this concept, students are encouraged to think about how ocean color is used to estimate the concentration of chlorophyll to infer phytoplankton abundance, colored dissolved organic matter, and suspended sediments. (View Less)
This brief article describes Earth's gravity and it's role in keeping the atmosphere bound to Earth. SciJinks is a joint NASA/NOAA educational website targeting middle school-aged children and their educators. It explores weather and Earth science... (View More) through articles, videos, images, and games. (View Less)
This article explains the polar vortex: an area of low pressure (a wide expanse of swirling cold air) that is parked in polar regions. An explanation is also provided for high and low pressure systems. SciJinks is a joint NASA/NOAA educational... (View More) website targeting middle school-aged children and their educators. It explores weather and Earth science through articles, videos, images, and games. (View Less)
This poster illustrates and describes types of high-, low-, and mid-altitude clouds. Poster back has article and activity related to Earth's water cycle, as well as a cloud identification quiz and a water cycle crossword puzzle.