Google Earth is free and lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean.
You can explore rich geographical content, save your toured places, and share with others.
New additions to google earth include the ability to explore under the oceans [...]
Continue reading about Using Google Earth in Science and Math
United States Geological Society has produced a series of fact sheets and links to information concerning earth science and events which have proven hazardous to people.
These fact sheets can be accessed, downloaded, or viewed at USGS Fact Sheets
Fact Sheet Topics
The following is a sample of the main topics available for free from the USGS:
Hurricane Hazards
California [...]