Volcanic Hazards

Destroys infrastructure and crops but rarely causes fatalities

• Lahar

• Pyroclastic Flow

• Lava

• Ash

Any material ejected from a volcano into the air.

• Ash

• Tephra

• Tsunakm

• Lahar

A primary hazard

• Pyroclastic Flow

• Lahar

• Climate Change

• Tsunami

A secondary hazard

• Floods

• Lava

• Tephra

• Pyroclastic Flow

Which hazard is Lake Nyos famous for?

• lava

• tsunami

• ash fall

• toxic gas

An example of this hazard is Hawaii in 2015

• Lava

• Pyroclastic flow

• lahars

• ash

This hazard caused 23,000 deaths in the Colombian town of Armero in 1984

• ash

• toxic gases

• lahars

• pyroclastic flows

This hazard les to 36,000 deaths after the eruption of Krakatoa in 1883

• Pyroclastic flow

• Tsunami

• climate change

• tephra

Which hazard can atravel the fastest? (approx 600km/hr)

• lava flow

• pyroclastic flow

• lahars

• tsunamis

Reorder the following in order from slowest to fastest

• pyroclastic

• lahar

• lava flow

• tsunami