This NASA website features photos of the New Orleans area during hurricane Katrina. The before and after photos highlight areas devastated by the storm. The website contains hi-res satellite images along with animations and text to fully explain the destructive power of storm surge.
This item is an interactive tutorial on the topic of interference of light waves. It introduces the user to constructive and destructive interference patterns through models that include soap bubbles and butterfly wings. It also includes a detailed look at Young’s double slit experiment, Newton’s Rings experiment, and hologram interference. The related Java simulation allows users to further explore the double-slit experiment by adjusting the distance between slits. This item is part of a larger collection of materials for students of introductory optics on the topic of light and color.
The issue-focused, peer-reviewed article asks can we stop the devastation of our planet and save our own species? We are in a biodiversity crisis — the fastest mass extinction in Earth’s history, largely due to: human destruction of ecosystems, overexploitation of species and natural resources, human overpopulation, the spread of agriculture, and pollution.
This activity has students play the roles of various atoms and molecules to help them better understand the formation and destruction of ozone in the stratosphere. At the conclusion of this activity students will understand how ozone is formed in the earth’s stratosphere and will be able to explain the importance of stratospheric ozone. They also will be able to explain how ozone is destroyed in the stratosphere, understand that some chemicals can speed up the breakdown of ozone in the atmosphere, and explain why chlorofluorocarbons (CFCs) are destructive to the ozone layer.
