(experiment) Chemistry / “Why Is the Statue of Liberty Green? exploring the mysteries of copper chemistry. The reason a copper coin dulls is because copper reacts with oxygen in the air and forms a layer of copper oxide (the greenish-grey color).
The eye of hurricane Isabel, seen from space. Hurricane Isabel was the most deadly storm of the 2003 Atlantic hurricane season. This photo taken by NASA astronaut Dr. Edward Tsang Lu from the International Space Station (Expedition on September
The "Why do we need sunscreen?" Experiment: put a dab of sunscreen on half of a black sheet of construction paper. let the kids smear it on that half. then stick it in the sun for the day and compare the 2 sides