Volcanic Activity and Natural Disasters

The video covers current affairs, focusing on volcanic eruptions and the Pacific Ring of Fire. It discusses recent eruptions, plate tectonics, and global events like earthquakes and fires. The role of volcanic observatories and aviation warnings is explained, along with the impact of volcanic air pollution. The video concludes with a summary of important news and a preview of upcoming topics.

What percentage of the world's active volcanoes are located in the Pacific Ring of Fire?

• 60%

• 75%

• 90%

• 50%

Which volcano in the Philippines is part of the LEP biosphere reserve?

• Mount Taal

• Mount Mayon

• Mount Apo

• Mount Pinatubo

What is the currency of Papua New Guinea?

• Peso

• Rupiah

• Kina

• Yen

Which type of plate boundary is associated with plates moving apart?

• Subduction

• Transform

• Divergent

• Convergent

What natural disaster occurred in Peru with a magnitude of 7.1?

• Volcanic eruption

• Earthquake

• Tsunami

• Hurricane

What is the main purpose of the World Organization of Volcanic Observatories?

• To predict earthquakes

• To study ocean currents

• To monitor volcanic activities

• To track weather patterns

Which color code indicates a potential eruption with significant volcanic ash?

• Green

• Yellow

• Orange

• Red

What is 'vog' primarily composed of?

• Methane

• Nitrogen oxides

• Sulfur dioxide and aerosols

• Carbon dioxide

What does the term 'laze' refer to?

• Lava and sulfur

• Lava and steam

• Lava and ash

• Lava haze

What is the pH range of acid rain caused by volcanic activity?

• 6 to 7

• 4 to 5

• 1.5 to 3.5

• 0 to 1