Our topic is volcanoes презентация

VOLCANO

The word "volcano" comes from the name of the Roman god of fire Vulcan.
Science, studying volcanoes - vulcanology, geomorphology.
Volcanoes are classified according to the form (tabular, stratovolcanoes, cinder cones, domes), active (active, dormant, extinct), country (land, underwater), and others.
Volcano - geological formation on the surface of the Earth or another planet's crust, where magma comes to the surface, forming lava, volcanic gases, rocks (volcanic bombs and pyroclastic flows).

VOLCANO ERUPTION

Volcano eruption - the process of release of the volcano on the Earth's surface: ash, the outpouring of magma, which coming on the surface, it becomes lava. Eruption may have a time period ranging from several hours to many years.
Volcanoes eruptions are a geological emergencies that can lead to disaster. In some cases, it may even be the worst disaster of the elements.