The Earth, Sea and Sky
This map displays in real-time the current wind conditions across the contiguous 48 states. Using surface wind data from the National Digital Forecast Database, it displays current wind speeds and directions using a multitude of moving, flowing lines. Kidwind shows how wind turbines works.
Earth & Sky started out as 2 minute broadcasts on radio stations. It evolved into a wide ranging web site bringing you daily updates on everything to the sky tonight to space travel and planet earth.
"Forces of Nature" by National Geographic links volcanoes, earthquakes, hurricanes, and tornadoes for their commonalities and differences.
A simple sandbox with windows on the sides can be used to illustrate Earth's geology.