Exploring science.

Includes index

Fire from below -- The active earth -- Eruption -- Spreading seas -- Moving magma -- When plates meet -- Hot spots -- Cones and shields -- Flowing lava -- Vicious volcanoes -- Dangerous gases -- Mount St. Helens -- Volcanic rocks -- Bubbles and intrusions -- Fiery minerals -- Volcanic landscapes -- Letting off steam -- Geysers and mudlarks -- Changing climates -- Out of this world -- The quaking earth -- Slips and faults -- Tremendous tremors -- Making waves -- Seismic science -- Building seismographs -- Fieldwork -- Measuring movements -- To the rescue