Classroom activities based on how scientists study active volcanoes on the deep ocean floor. Activities include: locating an earthquake epicenter, recording geological and biological information during an ocean floor traverse, creating cross-section profiles of the ocean floor, and graphing seafloor data. Resources include videos and teacher guides. Full description.

Email a USGS scientist your question on volcanoes, earthquakes, tsunamis, mountains, rocks, maps, ground water, lakes, rivers, even some biology. Explore the USGS website and the Frequently Asked Questions section to see if your question has already been answered. Scientists will not answer some types of questions, so read the directions before submitting a question. Site also features other USGS ... Full description.