Earthquakes and volcanoes / [electronic resource] by Fiona Watt.

includes glossary and index.

Origins of the earth -- The moving surface -- Movement at plate boundries -- How earthquakes happen -- Measuring and monitoring earthquakes -- Volcanoes -- Volcanic eruptions -- Lava-flows, blocks and bombs -- Volcanic islands -- Active, dormant and extinct -- Hot Rock -- Tsunami -- Monitoring earthquakes and eruptions -- Avoiding disasters.

Even though our planet seems to be a solid, stable place to live, it is moving and changing constantly. Most of the tiem these changes cannot be felt since they occur over long periods of time. But there ae occasions when sudden and violent natural phenomena happen -- earthquakes and volcanic eruptions. within minuts or even seconds, the surface of the Earth is changed drastically forever!