Volcanoes and Eruptions in the Philippines

The video discusses volcanoes, covering definitions of key terms like lava, magma, and plate. It explains how volcanoes are formed, their types, and provides examples. The video also highlights active volcanoes in the Philippines, emphasizing their eruption history.

What is the primary focus of the video tutorial?

• The history of earthquakes

• The study of ocean currents

• The topic of volcanoes

• The formation of mountains

What is the main difference between lava and magma?

• Lava is only found in oceans.

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

• Lava is found underground, while magma is on the surface.

• Lava is cooler than magma.

Where are most volcanoes found on Earth?

• In the polar regions

• In the middle of tectonic plates

• At the boundaries of tectonic plates

• In the desert regions

Which type of plate boundary is most likely to produce volcanic activity?

• Continental drift zones

• Divergent and convergent plate boundaries

• Subduction zones only

• Transform plate boundaries

What is a characteristic feature of composite volcanoes?

• They are formed from layers of ash and lava flows.

• They have gently sloping sides.

• They are non-explosive.

• They are always found underwater.

Which type of volcano is known for having non-explosive eruptions?

• Submarine volcanoes

• Dome volcanoes

• Shield volcanoes

• Composite volcanoes

What is a dome volcano also known as?

• Lava dome

• Shield dome

• Composite dome

• Submarine dome

How does the Philippine Institute of Volcanology and Seismology classify an active volcano?

• A volcano that has never erupted

• A volcano that has erupted in the last 100 years

• A volcano with documented eruptions within 10,000 years

• A volcano that is currently erupting

How many active volcanoes are there in the Philippines?

• About 10

• About 50

• About 100

• About 22

Which island in the Philippines has the majority of active volcanoes?

• Mindanao

• Palawan

• Luzon

• Visayas