What causes the circulation of ocean waters that are too deep to be affected by wind? Find out how salinity and temperature drive the deep sea currents. This resource has several videos and an online quiz.

Interactive site provides information on the Breakup of Pangea, plate boundaries, plate movements as well as a quiz.

Join Woods Hole scientists as they search for new volcanic eruptions on the ridge system in the eastern Pacific.

A detailed, interactive look at the mid-oceanic ridge. Learn more about slow and fast spreading ridges and how the polarity of the ocean floor helps determine the speed of spreading.

This webpage has two videos related to mid-oceaninc ridges. One of them examines the traits of hydrothermal vents and why their study is important. The other one describes the process by which new oceanic crust is created.

Why have we had ice ages in the past? This resource explores the reasons why the earth's climate has repeatedly changed to create ice ages. A quiz is available to check your understanding.