Products of the volcano eruption to man and environment

What is the primary difference between magma and lava?

• Magma is found on the surface, while lava is found underground.

• Lava is molten rock on the surface, while magma is molten rock beneath the surface.

• Magma is cooler than lava.

• There is no difference; both terms are interchangeable.

Latest volcanic eruption in the Philippines Today

• Kanlaon Volcano Eruption

• Mayon Volcano Eruption

• Taal Volcano Eruption

• Mount Banahaw Eruption

What does viscosity measure?

• The density of a fluid.

• The resistance of a fluid to flow.

• The color of a fluid.

• The temperature of a fluid.

What is the primary causes of high viscosity in magma?

• High Temperature

• High Gas Content

• High Silica Content

• Low Water Content

Where is silica abundantly found?

• In the atmosphere

• In the Earth's crust

• In the ocean

• In the core of the Earth

What role does silica play in geology?

• It is a primary component of organic matter.

• It is a key ingredient in many types of rocks and sediments.

• It is only found in volcanic rocks.

• It is rarely found in nature.

What is the chemical formula for silica?

• Si

• SiO

• SiO₂

• SiO₃

Comprising of more than 90% of total gas emissions of Volcano

• Steam

• Hydrogen Sulfide

• Carbon Dioxide

• Nitrogen

Flammable gas , colorless gas with a characteristic foul odor resembling that of rotten eggs.

• Carbon Dioxide

• Hydrogen Sulfide

• Nitrogen

• Hydrochloric Acid

Can gases be released from a volcano without a triggering eruption?

• Yes

• No

• Only during an eruption

• Only after an eruption