Introducing volcanoes and avalanches -- When a volcano erupts -- What's in a volcano? -- Types of volcanoes -- Rock, gas, ash, and lava -- Case study: Vesuvius, CE 79 -- Supervolcanoes -- People and volcanoes -- When an avalanche is released -- What's in an avalanche? -- Avalanche types -- People and avalanches -- Case study: Huascaran, 1970.
Summary:
Volcanoes and avalanches are extreme natural events on opposite ends of the temperature spectrum -- volcanoes cause destruction with hot lava, while avalanches do their damage with ice and snow.
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