The Science behind the Tonga Volcanic Eruption, Tsunami | PBS NewsHour

The first satellite images of the Pacific nation of Tonga emerged after the January 15, 2022 volcanic eruption. The photos show the islands coated in ash. Despite the violent explosion, the Tongan government has reported just three deaths. The status of two smaller islands in its chain is still unknown. John Yang takes a closer look at the science behind the volcano, its explosion and aftermath.

Terms: 

Tsunami — potentially destructive waves caused by suddenly displaced ocean water, especially after a volcano or earthquake

Five Facts

• Where is Tonga, and what disaster did the island face in the past week?
• What were some of the impacts of the volcano?
• How far away were the volcano’s effects felt?
• Who is interviewed in this piece, and what is his background?
• Why might the eruption have been heard thousands of miles away in Alaska, even if this was a relatively small eruption as measured by the amount of material it generated?

Focus Questions

What were some of the aspects of this eruption that scientists didn’t understand, according to this interview? How do you think they’ll go about figuring out what they don’t yet know?

Media literacy: What aspects of the science of volcanoes do you think were explained well in this piece? What was unclear?