Group items tagged

lesson plan

Summary: Assess coral bleaching using water temperature data from the NOAA National Data Buoy Center. Objectives * Describe the relationship between corals and zooxanthellae. * Identify stresses to corals. * Explain coral bleaching and the processes that cause coral bleaching. * Examine water temperature data and compare to levels known to induce coral bleaching. * Predict the effects of prolonged, increased temperaturs on coral reefs. Introduction The magnificent beauty of a coral reef is a true masterpiece of Mother Nature. A reef is a sculpture of living organisms, varied in color, texture, shape, and size. The creation of these works of art takes many, many years (some reefs are thousands of years old), and they don't exist solely for show. Reefs are building blocks for rich communities, providing habitat for a myriad of organisms, and they are some of the most diverse ecosystems on the planet. In addition, they support fishing grounds, attract tourists, and protect shorelines from waves and storms. "

assignment, lesson

An animated Robert Krulwich chemistry lesson -- in five episodes. [Correction The on-air version of this story stated that energy is released when carbon-atom bonds are broken. To be more precise, energy is released after the bond is broken and carbon atoms grab on to other atoms.]

An animated Robert Krulwich chemistry lesson -- in five episodes.

An animated Robert Krulwich chemistry lesson -- in five episodes.

An animated Robert Krulwich chemistry lesson -- in five episodes.

An animated Robert Krulwich chemistry lesson -- in five episodes.