Volcano Hazard

What is a volcano?

• A type of rock formation

• A geological feature that forms from magma, ash, and gas escaping from the Earth's crust

• An oceanic trench

As of February 2021, how many are the active volcanoes in the Philippines?

• 20

• 24

• 26

It is a mixture of water and volcanic particles of all sizes which can become saturated by water and move downslope.

• Lahar

• Ash Fall

• Volcanic Gases

Exposure to acid gases can: damage eyes and mucous membranes with respiratory system.

• True

• False

• Maybe

• Niether

A fast-moving current of hot gas and volcanic matter

• Lava Flow

• Pyroclastic Flow

• None of the above

They are streams of molten rocks that are poured or oozed from an erupting vent.

• Lava flow

• Tsunami

• Volcanic gases

• Pyroclastic flow

Where do magma forms?

• Intrusion

• Mantle

• Crust

• All of the above

They are minute volcanic particles such as pulverized rock, minerals and silicon which has fine to coarse grain.

• Lava flow

• Ash fall

• Volcanic gases

• Pyroclastic flow

This hazard happens when sea waves or wave trains are generated by sudden displacement of water

• Lava flow

• Tsunami

• Ballistic projectile

• Pyroclastic flow

Which of the following is an example of a hazard associated with earthquake?

• eutrophication

• ground shaking

• flooding

• pyroclastic density currents